dba_ 開頭
dba_users	資料庫使用者資訊
dba_segments	表段資訊
dba_objects	資料庫物件資訊
dba_extents	資料區資訊
dba_tablespaces	資料庫表空間資訊
dba_data_files	資料檔案設定資訊
dba_temp_files	臨時資料檔案資訊
dba_rollback_segs	回滾段資訊
dba_ts_quotas	使用者表空間配額資訊
dba_free_space	資料庫空閒空間資訊
dba_profiles	資料庫使用者資源限制資訊
dba_sys_privs	使用者的系統許可權資訊
dba_tab_privs	使用者具有的物件許可權資訊
dba_col_privs	使用者具有的列物件許可權資訊
dba_role_privs	使用者具有的角色資訊
dba_audit_trail	審計跟蹤記錄資訊
dba_stmt_audit_opts	審計設定資訊
dba_audit_object	物件審計結果資訊
dba_audit_session	會話審計結果資訊
dba_indexes	使用者模式的索引資訊

user_開頭
user_objects	使用者物件資訊
user_source	資料庫使用者的所有資源物件資訊
user_segments	使用者的表段資訊
user_tables	使用者的表物件資訊
user_tab_columns	使用者的表列資訊
user_constraints	使用者的物件約束資訊
user_sys_privs	當前使用者的系統許可權資訊
user_tab_privs	當前使用者的物件許可權資訊
user_col_privs	當前使用者的表列許可權資訊
user_role_privs	當前使用者的角色許可權資訊
user_indexes	使用者的索引資訊
user_ind_columns	使用者的索引對應的表列資訊
user_cons_columns	使用者的約束對應的表列資訊
user_clusters	使用者的所有簇資訊
user_clu_columns	使用者的簇所包含的內容資訊
user_cluster_hash_expressions	雜湊簇的資訊

v$ 開頭
v$database	資料庫資訊
v$datafile	資料檔案資訊
v$controlfile	控制檔案資訊
v$logfile	重做日誌資訊
v$instance	資料庫例項資訊
v$log	日誌組資訊
v$loghist	日誌歷史資訊
v$sga	資料庫SGA資訊
v$parameter	初始化引數資訊
v$process	資料庫伺服器程式資訊
v$bgprocess	資料庫後臺程式資訊
v$controlfile_record_section	控制檔案記載的各部分資訊
v$thread	執行緒資訊
v$datafile_header	資料檔案頭所記載的資訊
v$archived_log	歸檔日誌資訊
v$archive_dest	歸檔日誌的設定資訊
v$logmnr_contents	歸檔日誌分析的DML DDL結果資訊
v$logmnr_dictionary	日誌分析的字典檔案資訊
v$logmnr_logs	日誌分析的日誌列表資訊
v$tablespace	表空間資訊
v$tempfile	臨時檔案資訊
v$filestat	資料檔案的I/O統計資訊
v$undostat	Undo資料資訊
v$rollname	線上回滾段資訊
v$session	會話資訊
v$transaction	事務資訊
v$rollstat	回滾段統計資訊
v$pwfile_users	特權使用者資訊
v$sqlarea	當前查詢過的sql語句訪問過的資源及相關的資訊
v$sql	與v$sqlarea基本相同的相關資訊
v$sysstat	資料庫系統狀態資訊

all_開頭
all_users	資料庫所有使用者的資訊
all_objects	資料庫所有的物件的資訊
all_def_audit_opts	所有預設的審計設定資訊
all_tables	所有的表物件資訊
all_indexes	所有的資料庫物件索引的資訊

session_開頭
session_roles	會話的角色資訊
session_privs	會話的許可權資訊

index_開頭
index_stats	索引的設定和儲存資訊

偽表
dual	系統偽列表資訊

dba_users

Column	Datatype	NULL	Description
USERNAME	VARCHAR2(30)	NOT NULL	Name of the user
USER_ID	NUMBER	NOT NULL	ID number of the user
PASSWORD	VARCHAR2(30)		Encrypted password（加密）
ACCOUNT_STATUS	VARCHAR2(32)	NOT NULL	Account status: OPEN EXPIRED（到期） EXPIRED(GRACE) LOCKED(TIMED) LOCKED EXPIRED & LOCKED(TIMED) EXPIRED(GRACE) & LOCKED(TIMED) EXPIRED & LOCKED EXPIRED(GRACE) & LOCKED
LOCK_DATE	DATE		Date the account was locked if account status was LOCKED
EXPIRY_DATE	DATE		Date of expiration of the account
DEFAULT_TABLESPACE	VARCHAR2(30)	NOT NULL	Default tablespace for data
TEMPORARY_TABLESPACE	VARCHAR2(30)	NOT NULL	Name of the default tablespace for temporary tables or the name of a tablespace group
CREATED	DATE	NOT NULL	User creation date
PROFILE	VARCHAR2(30)	NOT NULL	User resource profile name
INITIAL_RSRC_CONSUMER_GROUP	VARCHAR2(30)		Initial resource consumer group for the user
EXTERNAL_NAME	VARCHAR2(4000)		User external name

dba_segments

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)		Username of the segment owner
SEGMENT_NAME	VARCHAR2(81)		Name, if any, of the segment
PARTITION_NAME	VARCHAR2(30)		Object Partition Name (Set to NULL for non-partitioned objects)
SEGMENT_TYPE	VARCHAR2(18)		Type of segment: INDEX PARTITION, TABLE PARTITION, TABLE, CLUSTER, INDEX, ROLLBACK, DEFERRED ROLLBACK, TEMPORARY, CACHE, LOBSEGMENT and LOBINDEX
TABLESPACE_NAME	VARCHAR2(30)		Name of the tablespace containing the segment
HEADER_FILE	NUMBER		ID of the file containing the segment header
HEADER_BLOCK	NUMBER		ID of the block containing the segment header
BYTES	NUMBER		Size, in bytes, of the segment
BLOCKS	NUMBER		Size, in Oracle blocks, of the segment
EXTENTS	NUMBER		Number of extents allocated to the segment
INITIAL_EXTENT	NUMBER		Size in bytes requested for the initial extent of the segment at create time. (Oracle rounds the extent size to multiples of 5 blocks if the requested size is greater than 5 blocks.)
NEXT_EXTENT	NUMBER		Size in bytes of the next extent to be allocated to the segment
MIN_EXTENTS	NUMBER		Minimum number of extents allowed in the segment
MAX_EXTENTS	NUMBER		Maximum number of extents allowed in the segment
PCT_INCREASE	NUMBER		Percent by which to increase the size of the next extent to be allocated
FREELISTS	NUMBER		Number of process freelists allocated to this segment
FREELIST_GROUPS	NUMBER		Number of freelist groups allocated to this segment
RELATIVE_FNO	NUMBER		Relative file number of the segment header
BUFFER_POOL	VARCHAR2(7)		Default buffer pool for the object

dba_objects

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the object
OBJECT_NAME	VARCHAR2(30)	NOT NULL	Name of the object
SUBOBJECT_NAME	VARCHAR2(30)		Name of the subobject (for example, partition)
OBJECT_ID	NUMBER	NOT NULL	Dictionary object number of the object
DATA_OBJECT_ID	NUMBER		Dictionary object number of the segment that contains the object
			Note: OBJECT_ID and DATA_OBJECT_ID display data dictionary metadata. Do not confuse these numbers with the unique 16-byte object identifier (object ID) that the Oracle Database assigns to row objects in object tables in the system.
OBJECT_TYPE	VARCHAR2(19)		Type of the object (such as TABLE, INDEX)
CREATED	DATE	NOT NULL	Timestamp for the creation of the object
LAST_DDL_TIME	DATE	NOT NULL	Timestamp for the last modification of the object resulting from a DDL statement (including grants and revokes)
TIMESTAMP	VARCHAR2(20)		Timestamp for the specification of the object (character data)
STATUS	VARCHAR2(7)		Status of the object (VALID, INVALID, or N/A)
TEMPORARY	VARCHAR2(1)		Whether the object is temporary (the current session can see only data that it placed in this object itself)
GENERATED	VARCHAR2(1)		Indicates whether the name of this object was system generated (Y) or not (N)
SECONDARY	VARCHAR2(1)		Whether this is a secondary object created by the ODCIIndexCreate method of the Oracle Data Cartridge (Y \| N)

dba_extents

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)		Owner of the segment associated with the extent
SEGMENT_NAME	VARCHAR2(81)		Name of the segment associated with the extent
PARTITION_NAME	VARCHAR2(30)		Object Partition Name (Set to NULL for non-partitioned objects)
SEGMENT_TYPE	VARCHAR2(18)		Type of the segment: INDEX PARTITION, TABLE PARTITION
TABLESPACE_NAME	VARCHAR2(30)		Name of the tablespace containing the extent
EXTENT_ID	NUMBER		Extent number in the segment
FILE_ID	NUMBER		File identifier number of the file containing the extent
BLOCK_ID	NUMBER		Starting block number of the extent
BYTES	NUMBER		Size of the extent in bytes
BLOCKS	NUMBER		Size of the extent in Oracle blocks
RELATIVE_FNO	NUMBER		Relative file number of the first extent block

dba_tablespaces

Column	Datatype	NULL	Description
TABLESPACE_NAME	VARCHAR2(30)	NOT NULL	Name of the tablespace
BLOCK_SIZE	NUMBER	NOT NULL	Tablespace block size
INITIAL_EXTENT	NUMBER		Default initial extent size
NEXT_EXTENT	NUMBER		Default incremental extent size
MIN_EXTENTS	NUMBER	NOT NULL	Default minimum number of extents
MAX_EXTENTS	NUMBER		Default maximum number of extents
PCT_INCREASE	NUMBER		Default percent increase for extent size
MIN_EXTLEN	NUMBER		Minimum extent size for this tablespace
STATUS	VARCHAR2(9)		Tablespace status: ONLINE OFFLINE READ ONLY
CONTENTS	VARCHAR2(9)		Tablespace contents: UNDO PERMANENT TEMPORARY
LOGGING	VARCHAR2(9)		Default logging attribute: LOGGING NOLOGGING
FORCE_LOGGING	VARCHAR2(3)		Indicates whether the tablespace is under force logging mode (YES) or not (NO)
EXTENT_MANAGEMENT	VARCHAR2(10)		Indicates whether the extents in the tablespace are dictionary managed (DICTIONARY) or locally managed (LOCAL)
ALLOCATION_TYPE	VARCHAR2(9)		Type of extent allocation in effect for the tablespace: SYSTEM UNIFORM USER
PLUGGED_IN	VARCHAR2(3)		Indicates whether the tablespace is plugged in (YES) or not (NO)
SEGMENT_SPACE_MANAGEMENT	VARCHAR2(6)		Indicates whether the free and used segment space in the tablespace is managed using free lists (MANUAL) or bitmaps (AUTO)
DEF_TAB_COMPRESSION	VARCHAR2(8)		Indicates whether default table compression is enabled (ENABLED) or not (DISABLED) Note: Enabling default table compression indicates that all tables in the tablespace will be created with table compression enabled unless otherwise specified.
RETENTION	VARCHAR2(11)		Undo tablespace retention: GUARANTEE - Tablespace is an undo tablespace with RETENTION specified as GUARANTEE A RETENTION value of GUARANTEE indicates that unexpired undo in all undo segments in the undo tablespace should be retained even if it means that forward going operations that need to generate undo in those segments fail. NOGUARANTEE - Tablespace is an undo tablespace with RETENTION specified as NOGUARANTEE NOT APPLY - Tablespace is not an undo tablespace
BIGFILE	VARCHAR2(3)		Indicates whether the tablespace is a bigfile tablespace (YES) or a smallfile tablespace (NO)

dba_data_files

Column	Datatype	NULL	Description
FILE_NAME	VARCHAR2(513)		Name of the database file
FILE_ID	NUMBER	NOT NULL	File identifier number of the database file
TABLESPACE_NAME	VARCHAR2(30)	NOT NULL	Name of the tablespace to which the file belongs
BYTES	NUMBER		Size of the file in bytes
BLOCKS	NUMBER	NOT NULL	Size of the file in Oracle blocks
STATUS	VARCHAR2(9)		File status: AVAILABLE or INVALID (INVALID means that the file number is not in use, for example, a file in a tablespace that was dropped)
RELATIVE_FNO	NUMBER		Relative file number
AUTOEXTENSIBLE	VARCHAR2(3)		Autoextensible indicator
MAXBYTES	NUMBER		Maximum file size in bytes
MAXBLOCKS	NUMBER		Maximum file size in blocks
INCREMENT_BY	NUMBER		Number of tablespace blocks used as autoextension increment. Block size is contained in the BLOCK_SIZE column of the DBA_TABLESPACES view.
USER_BYTES	NUMBER		The size of the file available for user data. The actual size of the file minus the USER_BYTES value is used to store file related metadata.
USER_BLOCKS	NUMBER		Number of blocks which can be used by the data
ONLINE_STATUS	VARCHAR2(7)		Online status of the file: SYSOFF SYSTEM OFFLINE ONLINE RECOVER

dba_temp_files

Column	Datatype	NULL	Description
FILE_NAME	VARCHAR2(513)		Name of the database temp file
FILE_ID	NUMBER		File identifier number of the database temp file
TABLESPACE_NAME	VARCHAR2(30)	NOT NULL	Name of the tablespace to which the file belongs
BYTES	NUMBER		Size of the file (in bytes)
BLOCKS	NUMBER		Size of the file (in Oracle blocks)
STATUS	CHAR(9)		File status: AVAILABLE
RELATIVE_FNO	NUMBER		Tablespace-relative file number
AUTOEXTENSIBLE	VARCHAR2(3)		Indicates whether the file is autoextensible (YES) or not (NO)
MAXBYTES	NUMBER		maximum size of the file (in bytes)
MAXBLOCKS	NUMBER		Maximum size of the file (in Oracle blocks)
INCREMENT_BY	NUMBER		Default increment for autoextension
USER_BYTES	NUMBER		Size of the useful portion of the file (in bytes)
USER_BLOCKS	NUMBER		Size of the useful portion of the file (in Oracle blocks)

dba_rollback_segs

Column	Datatype	NULL	Description
SEGMENT_NAME	VARCHAR2(30)	NOT NULL	Name of the rollback segment
OWNER	VARCHAR2(6)		Owner of the rollback segment
TABLESPACE_NAME	VARCHAR2(30)	NOT NULL	Name of the tablespace containing the rollback segment
SEGMENT_ID	NUMBER	NOT NULL	ID number of the rollback segment
FILE_ID	NUMBER	NOT NULL	File identifier number of the file containing the segment head
BLOCK_ID	NUMBER	NOT NULL	ID number of the block containing the segment header
INITIAL_EXTENT	NUMBER		Initial extent size in bytes
NEXT_EXTENT	NUMBER		Secondary extent size in bytes
MIN_EXTENTS	NUMBER	NOT NULL	Minimum number of extents
MAX_EXTENTS	NUMBER	NOT NULL	Maximum number of extent
PCT_INCREASE	NUMBER		Percent increase for extent size
STATUS	VARCHAR2(16)		Rollback segment status
INSTANCE_NUM	VARCHAR2(40)		Rollback segment owning Real Application Clusters instance number
RELATIVE_FNO	NUMBER	NOT NULL	Relative file number of the segment header

dba_ts_quotas

Column	Datatype	NULL	Description
TABLESPACE_NAME	VARCHAR2(30)	NOT NULL	Tablespace name
USERNAME	VARCHAR2(30)	NOT NULL	User with resource rights on the tablespace
BYTES	NUMBER		Number of bytes charged to the user
MAX_BYTES	NUMBER		User's quota in bytes, or -1 if no limit
BLOCKS	NUMBER	NOT NULL	Number of Oracle blocks charged to the user
MAX_BLOCKS	NUMBER		User's quota in Oracle blocks, or -1 if no limit
DROPPED	VARCHAR2(3)		Whether the tablespace has been dropped

dba_free_space

Column	Datatype	NULL	Description
TABLESPACE_NAME	VARCHAR2(30)		Name of the tablespace containing the extent
FILE_ID	NUMBER		File identifier number of the file containing the extent
BLOCK_ID	NUMBER		Starting block number of the extent
BYTES	NUMBER		Size of the extent (in bytes)
BLOCKS	NUMBER		Size of the extent (in Oracle blocks)
RELATIVE_FNO	NUMBER		Relative file number of the file containing the extent

dba_profiles

Column	Datatype	NULL	Description
PROFILE	VARCHAR2(30)	NOT NULL	Profile name
RESOURCE_NAME	VARCHAR2(32)	NOT NULL	Resource name
RESOURCE_TYPE	VARCHAR2(8)		Indicates whether the resource profile is a KERNEL or a PASSWORD parameter
LIMIT	VARCHAR2(40)		Limit placed on this resource for this profile

dba_sys_privs

Column	Datatype	NULL	Description
GRANTEE	VARCHAR2(30)	NOT NULL	Grantee name, user, or role receiving the grant
USERNAME	VARCHAR2(30)		Name of the current user
PRIVILEGE	VARCHAR2(40)	NOT NULL	System privilege
ADMIN_OPTION	VARCHAR2(3)		Grant was with the ADMIN option

dba_tab_privs

Column	Datatype	NULL	Description
GRANTEE	VARCHAR2(30)	NOT NULL	Name of the user to whom access was granted
OWNER	VARCHAR2(30)	NOT NULL	Owner of the object
TABLE_NAME	VARCHAR2(30)	NOT NULL	Name of the object
GRANTOR	VARCHAR2(30)	NOT NULL	Name of the user who performed the grant
PRIVILEGE	VARCHAR2(40)	NOT NULL	Privilege on the object
GRANTABLE	VARCHAR2(3)		Indicates whether the privilege was granted with the GRANT OPTION (YES) or not (NO)
HIERARCHY	VARCHAR2(3)		Indicates whether the privilege was granted with the HIERARCHY OPTION (YES) or not (NO)

dba_col_privs

Column	Datatype	NULL	Description
GRANTEE	VARCHAR2(30)	NOT NULL	Name of the user to whom access was granted
OWNER	VARCHAR2(30)	NOT NULL	Owner of the object
TABLE_NAME	VARCHAR2(30)	NOT NULL	Name of the object
COLUMN_NAME	VARCHAR2(30)	NOT NULL	Name of the column
GRANTOR	VARCHAR2(30)	NOT NULL	Name of the user who performed the grant
PRIVILEGE	VARCHAR2(40)	NOT NULL	Privilege on the column
GRANTABLE	VARCHAR2(3)		Indicates whether the privilege was granted with the GRANT OPTION (YES) or not (NO)

dba_role_privs

Column	Datatype	NULL	Description
GRANTEE	VARCHAR2(30)		Name of the user or role receiving the grant
GRANTED_ROLE	VARCHAR2(30)	NOT NULL	Granted role name
ADMIN_OPTION	VARCHAR2(3)		Indicates whether the grant was with the ADMIN OPTION (YES) or not (NO)
DEFAULT_ROLE	VARCHAR2(3)		Indicates whether the role is designated as a DEFAULT ROLE for the user (YES) or not (NO)

dba_audit_trail

Column	Datatype	NULL	Description
OS_USERNAME	VARCHAR2(255)		Operating system login username of the user whose actions were audited
USERNAME	VARCHAR2(30)		Name (not ID number) of the user whose actions were audited
USERHOST	VARCHAR2(128)		Client host machine name
TERMINAL	VARCHAR2(255)		Identifier of the user's terminal
TIMESTAMP	DATE		Date and time of the creation of the audit trail entry (date and time of user login for entries created by AUDIT SESSION) in the local database session time zone
OWNER	VARCHAR2(30)		Creator of the object affected by the action
OBJ_NAME	VARCHAR2(128)		Name of the object affected by the action
ACTION	NUMBER	NOT NULL	Numeric action type code. The corresponding name of the action type is in the ACTION_NAME column.
ACTION_NAME	VARCHAR2(28)		Name of the action type corresponding to the numeric code in the ACTION column
NEW_OWNER	VARCHAR2(30)		Owner of the object named in the NEW_NAME column
NEW_NAME	VARCHAR2(128)		New name of the object after a RENAME or the name of the underlying object
OBJ_PRIVILEGE	VARCHAR2(16)		Object privileges granted or revoked by a GRANT or REVOKE statement
SYS_PRIVILEGE	VARCHAR2(40)		System privileges granted or revoked by a GRANT or REVOKE statement
ADMIN_OPTION	VARCHAR2(1)		Indicates whether the role or system privilege was granted with the ADMIN option
GRANTEE	VARCHAR2(30)		Name of the grantee specified in a GRANT or REVOKE statement
AUDIT_OPTION	VARCHAR2(40)		Auditing option set with the AUDIT statement
SES_ACTIONS	VARCHAR2(19)		Session summary (a string of 16 characters, one for each action type in the order ALTER, AUDIT, COMMENT, DELETE, GRANT, INDEX, INSERT, LOCK, RENAME, SELECT, UPDATE, REFERENCES, and EXECUTE. Positions 14, 15, and 16 are reserved for future use. The characters are: - - None S - Success F - Failure B - Both
LOGOFF_TIME	DATE		Date and time of user log off
LOGOFF_LREAD	NUMBER		Logical reads for the session
LOGOFF_PREAD	NUMBER		Physical reads for the session
LOGOFF_LWRITE	NUMBER		Logical writes for the session
LOGOFF_DLOCK	VARCHAR2(40)		Deadlocks detected during the session
COMMENT_TEXT	VARCHAR2(4000)		Text comment on the audit trail entry, providing more information about the statement audited Also indicates how the user was authenticated. The method can be one of the following: DATABASE - Authentication was done by password NETWORK - Authentication was done by Oracle Net Services or the Advanced Security option PROXY - Client was authenticated by another user; the name of the proxy user follows the method type
SESSIONID	NUMBER	NOT NULL	Numeric ID for each Oracle session
ENTRYID	NUMBER	NOT NULL	Numeric ID for each audit trail entry in the session
STATEMENTID	NUMBER	NOT NULL	Numeric ID for each statement run
RETURNCODE	NUMBER	NOT NULL	Oracle error code generated by the action. Some useful values: 0 - Action succeeded 2004 - Security violation
PRIV_USED	VARCHAR2(40)		System privilege used to execute the action
CLIENT_ID	VARCHAR2(64)		Client identifier in each Oracle session
ECONTEXT_ID	VARCHAR2(64)		Application execution context identifier
SESSION_CPU	NUMBER		Amount of CPU time used by each Oracle session
EXTENDED_TIMESTAMP	TIMESTAMP(6) WITH TIME ZONE		Timestamp of the creation of the audit trail entry (timestamp of user login for entries created by AUDIT SESSION) in UTC (Coordinated Universal Time) time zone
PROXY_SESSIONID	NUMBER		Proxy session serial number, if an enterprise user has logged in through the proxy mechanism
GLOBAL_UID	VARCHAR2(32)		Global user identifier for the user, if the user has logged in as an enterprise user
INSTANCE_NUMBER	NUMBER		Instance number as specified by the INSTANCE_NUMBER initialization parameter
OS_PROCESS	VARCHAR2(16)		Operating System process identifier of the Oracle process
TRANSACTIONID	RAW(8)		Transaction identifier of the transaction in which the object is accessed or modified
SCN	NUMBER		System change number (SCN) of the query
SQL_BIND	NVARCHAR2(2000)		Bind variable data of the query
SQL_TEXT	NVARCHAR2(2000)		SQL text of the query

dba_stmt_audit_opts

Column	Datatype	NULL	Description
USER_NAME	VARCHAR2(30)		User name if by user auditing. ANY CLIENT if access by a proxy on behalf of a client is being audited. NULL for system-wide auditing
PROXY_NAME	VARCHAR2(30)		The name of the proxy user which is performing an operation for the client. NULL if the client is performing the operation directly.
AUDIT_OPTION	VARCHAR2(40)	NOT NULL	Name of the system auditing option
SUCCESS	VARCHAR2(10)		Mode for WHENEVER SUCCESSFUL system auditing
FAILURE	VARCHAR2(10)		Mode for WHENEVER NOT SUCCESSFUL system auditing

dba_audit_object

Column	Datatype	NULL	Description
OS_USERNAME	VARCHAR2(255)		Operating system login username of the user whose actions were audited
USERNAME	VARCHAR2(30)		Name (not ID number) of the user whose actions were audited
USERHOST	VARCHAR2(128)		Client host machine name
TERMINAL	VARCHAR2(255)		Identifier of the user's terminal
TIMESTAMP	DATE		Date and time of the creation of the audit trail entry (date and time of user login for entries created by AUDIT SESSION) in the local database session time zone
OWNER	VARCHAR2(30)		Creator of the object affected by the action
OBJ_NAME	VARCHAR2(128)		Name of the object affected by the action
ACTION_NAME	VARCHAR2(28)		Name of the action type corresponding to the numeric code in the ACTION column in DBA_AUDIT_TRAIL
NEW_OWNER	VARCHAR2(30)		Owner of the object named in the NEW_NAME column
NEW_NAME	VARCHAR2(128)		New name of an object after a RENAME or the name of the underlying object
SES_ACTIONS	VARCHAR2(19)		Session summary (a string of 16 characters, one for each action type in the order ALTER, AUDIT, COMMENT, DELETE, GRANT, INDEX, INSERT, LOCK, RENAME, SELECT, UPDATE, REFERENCES, and EXECUTE. Positions 14, 15, and 16 are reserved for future use. The characters are: - for none, S for success, F for failure, and B for both).
COMMENT_TEXT	VARCHAR2(4000)		Text comment on the audit trail
SESSIONID	NUMBER	NOT NULL	Numeric ID for each Oracle session
ENTRYID	NUMBER	NOT NULL	Numeric ID for each audit trail entry in the session
STATEMENTID	NUMBER	NOT NULL	Numeric ID for each statement run
RETURNCODE	NUMBER	NOT NULL	Oracle error code generated by the action. Some useful values: · 0 - Action succeeded · 2004 - Security violation
PRIV_USED	VARCHAR2(40)		System privilege used to execute the action
CLIENT_ID	VARCHAR2(64)		Client identifier in each Oracle session
SESSION_CPU	NUMBER		Amount of CPU time used by each Oracle session
EXTENDED_TIMESTAMP	TIMESTAMP(6) WITH TIME ZONE		Timestamp of the creation of the audit trail entry (timestamp of user login for entries created by AUDIT SESSION) in UTC (Coordinated Universal Time) time zone
PROXY_SESSIONID	NUMBER		Proxy session serial number, if an enterprise user has logged in through the proxy mechanism
GLOBAL_UID	VARCHAR2(32)		Global user identifier for the user, if the user has logged in as an enterprise user
INSTANCE_NUMBER	NUMBER		Instance number as specified by the INSTANCE_NUMBER initialization parameter
OS_PROCESS	VARCHAR2(16)		Operating System process identifier of the Oracle process
TRANSACTIONID	RAW(8)		Transaction identifier of the transaction in which the object is accessed or modified
SCN	NUMBER		System change number (SCN) of the query
SQL_BIND	NVARCHAR2(2000)		Bind variable data of the query
SQL_TEXT	NVARCHAR2(2000)		SQL text of the query

dba_audit_session

Column	Datatype	NULL	Description
OS_USERNAME	VARCHAR2(255)		Operating system login username of the user whose actions were audited
USERNAME	VARCHAR2(30)		Name (not ID number) of the user whose actions were audited
USERHOST	VARCHAR2(128)		Client host machine name
TERMINAL	VARCHAR2(255)		Identifier of the user's terminal
TIMESTAMP	DATE		Date and time of the creation of the audit trail entry (date and time of user login for entries created by AUDIT SESSION) in the local database session time zone
ACTION_NAME	VARCHAR2(28)		Name of the action type corresponding to the numeric code in the ACTION column in DBA_AUDIT_TRAIL
LOGOFF_TIME	DATE		Date and time of user log off
LOGOFF_LREAD	NUMBER		Logical reads for the session
LOGOFF_PREAD	NUMBER		Physical reads for the session
LOGOFF_LWRITE	NUMBER		Logical writes for the session
LOGOFF_DLOCK	VARCHAR2(40)		Deadlocks detected during the session
SESSIONID	NUMBER	NOT NULL	Numeric ID for each Oracle session
RETURNCODE	NUMBER	NOT NULL	Oracle error code generated by the action. Some useful values: · 0 - Action succeeded · 2004 - Security violation
CLIENT_ID	VARCHAR2(64)		Client identifier in each Oracle session
SESSION_CPU	NUMBER		Amount of CPU time used by each Oracle session
EXTENDED_TIMESTAMP	TIMESTAMP(6) WITH TIME ZONE		Timestamp of the creation of the audit trail entry (timestamp of user login for entries created by AUDIT SESSION) in UTC (Coordinated Universal Time) time zone
PROXY_SESSIONID	NUMBER		Proxy session serial number, if an enterprise user has logged in through the proxy mechanism
GLOBAL_UID	VARCHAR2(32)		Global user identifier for the user, if the user has logged in as an enterprise user
INSTANCE_NUMBER	NUMBER		Instance number as specified by the INSTANCE_NUMBER initialization parameter
OS_PROCESS	VARCHAR2(16)		Operating System process identifier of the Oracle process

dba_indexes

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the index
INDEX_NAME	VARCHAR2(30)	NOT NULL	Name of the index
INDEX_TYPE	VARCHAR2(27)		Type of the index: NORMAL BITMAP FUNCTION-BASED NORMAL FUNCTION-BASED BITMAP DOMAIN
TABLE_OWNER	VARCHAR2(30)	NOT NULL	Owner of the indexed object
TABLE_NAME	VARCHAR2(30)	NOT NULL	Name of the indexed object
TABLE_TYPE	CHAR(5)		Type of the indexed object (for example, TABLE, CLUSTER)
UNIQUENESS	VARCHAR2(9)		Indicates whether the index is UNIQUE or NONUNIQUE
COMPRESSION	VARCHAR2(8)		Indicates whether index compression is enabled (ENABLED) or not (DISABLED)
PREFIX_LENGTH	NUMBER		Number of columns in the prefix of the compression key
TABLESPACE_NAME	VARCHAR2(30)		Name of the tablespace containing the index
INI_TRANS	NUMBER		Initial number of transactions
MAX_TRANS	NUMBER		Maximum number of transactions
INITIAL_EXTENT	NUMBER		Size of the initial extent
NEXT_EXTENT	NUMBER		Size of secondary extents
MIN_EXTENTS	NUMBER		Minimum number of extents allowed in the segment
MAX_EXTENTS	NUMBER		Maximum number of extents allowed in the segment
PCT_INCREASE	NUMBER		Percentage increase in extent size
PCT_THRESHOLD	NUMBER		Threshold percentage of block space allowed per index entry
INCLUDE_COLUMN	NUMBER		Column ID of the last column to be included in index-organized table primary key (non-overflow) index. This column maps to the COLUMN_ID column of the *_TAB_COLUMNS data dictionary views.
FREELISTS	NUMBER		Number of process freelists allocated to this segment
FREELIST_GROUPS	NUMBER		Number of freelist groups allocated to this segment
PCT_FREE	NUMBER		Minimum percentage of free space in a block
LOGGING	VARCHAR2(3)		Logging information
BLEVEL*	NUMBER		B*-Tree level: depth of the index from its root block to its leaf blocks. A depth of 0 indicates that the root block and leaf block are the same.
LEAF_BLOCKS*	NUMBER		Number of leaf blocks in the index
DISTINCT_KEYS*	NUMBER		Number of distinct indexed values. For indexes that enforce UNIQUE and PRIMARY KEY constraints, this value is the same as the number of rows in the table (USER_TABLES.NUM_ROWS)
AVG_LEAF_BLOCKS_PER_KEY*	NUMBER		Average number of leaf blocks in which each distinct value in the index appears, rounded to the nearest integer. For indexes that enforce UNIQUE and PRIMARY KEY constraints, this value is always 1.
AVG_DATA_BLOCKS_PER_KEY*	NUMBER		Average number of data blocks in the table that are pointed to by a distinct value in the index rounded to the nearest integer. This statistic is the average number of data blocks that contain rows that contain a given value for the indexed columns.
CLUSTERING_FACTOR*	NUMBER		Indicates the amount of order of the rows in the table based on the values of the index. If the value is near the number of blocks, then the table is very well ordered. In this case, the index entries in a single leaf block tend to point to rows in the same data blocks. If the value is near the number of rows, then the table is very randomly ordered. In this case, it is unlikely that index entries in the same leaf block point to rows in the same data blocks. For bitmap indexes, this column is not applicable and is not used.
STATUS	VARCHAR2(8)		Indicates whether a nonpartitioned index is VALID or UNUSABLE
NUM_ROWS	NUMBER		Number of rows in the index
SAMPLE_SIZE	NUMBER		Size of the sample used to analyze the index
LAST_ANALYZED	DATE		Date on which this index was most recently analyzed
DEGREE	VARCHAR2(40)		Number of threads per instance for scanning the index
INSTANCES	VARCHAR2(40)		Number of instances across which the indexes to be scanned
PARTITIONED	VARCHAR2(3)		Indicates whether the index is partitioned (YES) or not (NO)
TEMPORARY	VARCHAR2(1)		Indicates whether the index is on a temporary table
GENERATED	VARCHAR2(1)		Indicates whether the name of the index is system generated (Y) or not (N)
SECONDARY	VARCHAR2(1)		Indicates whether the index is a secondary object created by the ODCIIndexCreate method of the Oracle Data Cartridge (Y) or not (N)
BUFFER_POOL	VARCHAR2(7)		Name of the default buffer pool to be used for the index blocks
USER_STATS	VARCHAR2(3)		Indicates whether statistics were entered directly by the user (YES) or not (NO)
DURATION	VARCHAR2(15)		Indicates the duration of a temporary table: SYS$SESSION - Rows are preserved for the duration of the session SYS$TRANSACTION - Rows are deleted after COMMIT Null for a permanent table
PCT_DIRECT_ACCESS	NUMBER		For a secondary index on an index-organized table, the percentage of rows with VALID guess
ITYP_OWNER	VARCHAR2(30)		For a domain index, the owner of the indextype
ITYP_NAME	VARCHAR2(30)		For a domain index, the name of the indextype
PARAMETERS	VARCHAR2(1000)		For a domain index, the parameter string
GLOBAL_STATS	VARCHAR2(3)		For partitioned indexes, indicates whether statistics were collected by analyzing the index as a whole (YES) or were estimated from statistics on underlying index partitions and subpartitions (NO)
DOMIDX_STATUS	VARCHAR2(12)		Status of the domain index: NULL - Index is not a domain index VALID - Index is a valid domain index IDXTYP_INVLD - Indextype of the domain index is invalid
DOMIDX_OPSTATUS	VARCHAR2(6)		Status of the operation on the domain index: NULL - Index is not a domain index VALID - Operation performed without errors FAILED - Operation failed with an error
FUNCIDX_STATUS	VARCHAR2(8)		Status of a function-based index: NULL - Index is not a function-based index ENABLED - Function-based index is enabled DISABLED - Function-based index is disabled
JOIN_INDEX	VARCHAR2(3)		Indicates whether the index is a join index (YES) or not (NO)
IOT_REDUNDANT_PKEY_ELIM	VARCHAR2(3)		Indicates whether redundant primary key columns are eliminated from secondary indexes on index-organized tables (YES) or not (NO)
DROPPED	VARCHAR2(3)		Indicates whether the index has been dropped and is in the recycle bin (YES) or not (NO); null for partitioned tables

user_objects

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the object
OBJECT_NAME	VARCHAR2(30)	NOT NULL	Name of the object
SUBOBJECT_NAME	VARCHAR2(30)		Name of the subobject (for example, partition)
OBJECT_ID	NUMBER	NOT NULL	Dictionary object number of the object
DATA_OBJECT_ID	NUMBER		Dictionary object number of the segment that contains the object
			Note: OBJECT_ID and DATA_OBJECT_ID display data dictionary metadata. Do not confuse these numbers with the unique 16-byte object identifier (object ID) that the Oracle Database assigns to row objects in object tables in the system.
OBJECT_TYPE	VARCHAR2(19)		Type of the object (such as TABLE, INDEX)
CREATED	DATE	NOT NULL	Timestamp for the creation of the object
LAST_DDL_TIME	DATE	NOT NULL	Timestamp for the last modification of the object resulting from a DDL statement (including grants and revokes)
TIMESTAMP	VARCHAR2(20)		Timestamp for the specification of the object (character data)
STATUS	VARCHAR2(7)		Status of the object (VALID, INVALID, or N/A)
TEMPORARY	VARCHAR2(1)		Whether the object is temporary (the current session can see only data that it placed in this object itself)
GENERATED	VARCHAR2(1)		Was the name of this object system generated? (Y\|N)
SECONDARY	VARCHAR2(1)		Whether this is a secondary object created by the ODCIIndexCreate method of the Oracle Data Cartridge (Y \| N)

user_source

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the object
NAME	VARCHAR2(30)	NOT NULL	Name of the object
TYPE	VARCHAR2(12)		Type of object: FUNCTION, JAVA SOURCE, PACKAGE, PACKAGE BODY, PROCEDURE, TRIGGER, TYPE, TYPE BODY
LINE	NUMBER	NOT NULL	Line number of this line of source
TEXT	VARCHAR2(4000)		Text source of the stored object

user_segments

USER_SEGMENTS describes the storage allocated for the segments owned by the current user's objects. Its columns (except for OWNER, HEADER_FILE, HEADER_BLOCK, and RELATIVE_FNO) are the same as those in DBA_SEGMENTS.

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)		Username of the segment owner
SEGMENT_NAME	VARCHAR2(81)		Name, if any, of the segment
PARTITION_NAME	VARCHAR2(30)		Object Partition Name (Set to NULL for non-partitioned objects)
SEGMENT_TYPE	VARCHAR2(18)		Type of segment: INDEX PARTITION, TABLE PARTITION, TABLE, CLUSTER, INDEX, ROLLBACK, DEFERRED ROLLBACK, TEMPORARY, CACHE, LOBSEGMENT and LOBINDEX
TABLESPACE_NAME	VARCHAR2(30)		Name of the tablespace containing the segment
HEADER_FILE	NUMBER		ID of the file containing the segment header
HEADER_BLOCK	NUMBER		ID of the block containing the segment header
BYTES	NUMBER		Size in bytes, of the segment
BLOCKS	NUMBER		Size, in Oracle blocks, of the segment
EXTENTS	NUMBER		Number of extents allocated to the segment
INITIAL_EXTENT	NUMBER		Size in bytes requested for the initial extent of the segment at create time. (Oracle rounds the extent size to multiples of 5 blocks if the requested size is greater than 5 blocks.)
NEXT_EXTENT	NUMBER		Size in bytes of the next extent to be allocated to the segment
MIN_EXTENTS	NUMBER		Minimum number of extents allowed in the segment
MAX_EXTENTS	NUMBER		Maximum number of extents allowed in the segment
PCT_INCREASE	NUMBER		Percent by which to increase the size of the next extent to be allocated
FREELISTS	NUMBER		Number of process freelists allocated to this segment
FREELIST_GROUPS	NUMBER		Number of freelist groups allocated to this segment
RELATIVE_FNO	NUMBER		Relative file number of the segment header
BUFFER_POOL	VARCHAR2(7)		Default buffer pool for the object

user_tables

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the table
TABLE_NAME	VARCHAR2(30)	NOT NULL	Name of the table
TABLESPACE_NAME	VARCHAR2(30)		Name of the tablespace containing the table; null for partitioned, temporary, and index-organized tables
CLUSTER_NAME	VARCHAR2(30)		Name of the cluster, if any, to which the table belongs
IOT_NAME	VARCHAR2(30)		Name of the index-organized table, if any, to which the overflow or mapping table entry belongs. If the IOT_TYPE column is not null, then this column contains the base table name.
STATUS	VARCHAR2(8)		If a previous DROP TABLE operation failed, indicates whether the table is unusable (UNUSABLE) or valid (VALID)
PCT_FREE	NUMBER		Minimum percentage of free space in a block; null for partitioned tables
PCT_USED	NUMBER		Minimum percentage of used space in a block; null for partitioned tables
INI_TRANS	NUMBER		Initial number of transactions; null for partitioned tables
MAX_TRANS	NUMBER		Maximum number of transactions; null for partitioned tables
INITIAL_EXTENT	NUMBER		Size of the initial extent (in bytes); null for partitioned tables
NEXT_EXTENT	NUMBER		Size of secondary extents (in bytes); null for partitioned tables
MIN_EXTENTS	NUMBER		Minimum number of extents allowed in the segment; null for partitioned tables
MAX_EXTENTS	NUMBER		Maximum number of extents allowed in the segment; null for partitioned tables
PCT_INCREASE	NUMBER		Percentage increase in extent size; null for partitioned tables
FREELISTS	NUMBER		Number of process freelists allocated to the segment; null for partitioned tables
FREELIST_GROUPS	NUMBER		Number of freelist groups allocated to the segment; null for partitioned tables
LOGGING	VARCHAR2(3)		Logging attribute; NULL for partitioned tables
BACKED_UP	VARCHAR2(1)		Has table been backed up since last change
NUM_ROWS*	NUMBER		Number of rows in the table
BLOCKS*	NUMBER		Number of used data blocks in the table
EMPTY_BLOCKS*	NUMBER		Number of empty (never used) data blocks in the table
AVG_SPACE*	NUMBER		Average amount of free space, in bytes, in a data block allocated to the table
CHAIN_CNT*	NUMBER		Number of rows in the table that are chained from one data block to another, or which have migrated to a new block, requiring a link to preserve the old ROWID
AVG_ROW_LEN*	NUMBER		Average length of a row in the table (in bytes)
AVG_SPACE_FREELIST _BLOCKS	NUMBER		Average freespace of all blocks on a freelist
NUM_FREELIST_BLOCKS	NUMBER		Number of blocks on the freelist
DEGREE	VARCHAR2(10)		Number of threads per instance for scanning the table
INSTANCES	VARCHAR2(10)		Number of instances across which the table is to be scanned
CACHE	VARCHAR2(5)		Indicates whether the table is to be cached in the buffer cache (Y) or not (N)
TABLE_LOCK	VARCHAR2(8)		Indicates whether table locking is enabled (ENABLED) or disabled (DISABLED)
SAMPLE_SIZE	NUMBER		Sample size used in analyzing this table
LAST_ANALYZED	DATE		Date on which this table was most recently analyzed
PARTITIONED	VARCHAR2(3)		Indicates whether this table is partitioned. Set to YES if it is partitioned.
IOT_TYPE	VARCHAR2(12)		If this is an index-organized table, then IOT_TYPE is IOT, IOT_OVERFLOW, or IOT_MAPPING. If this is not an index-organized table, then IOT_TYPE is NULL.
TEMPORARY	VARCHAR2(1)		Can the current session only see data that it place in this object itself?
SECONDARY	VARCHAR2(1)		Whether the trigger is a secondary object created by the ODCIIndexCreate method of the Oracle Data Cartridge (Y \|N)
NESTED	VARCHAR2(3)		Indicates whether the table is a nested table (YES) or not (NO)
BUFFER_POOL	VARCHAR2(7)		The default buffer pool for the object. NULL for partitioned tables
ROW_MOVEMENT	VARCHAR2(8)		Whether partitioned row movement is enabled or disabled
GLOBAL_STATS	VARCHAR2(3)		For partitioned tables, indicates whether statistics were collected for the table as a whole (YES) or were estimated from statistics on underlying partitions and subpartitions (NO)
USER_STATS	VARCHAR2(3)		Indicates whether statistics were entered directly by the user (YES) or not (NO)
DURATION	VARCHAR2(15)		Indicates the duration of a temporary table: SYS$SESSION: the rows are preserved for the duration of the session SYS$TRANSACTION: the rows are deleted after COMMIT Null for a permanent table
SKIP_CORRUPT	VARCHAR2(8)		Whether the Oracle Database ignores blocks marked corrupt during table and index scans (ENABLED) or raises an error (DISABLED). To enable this feature, run the DBMS_REPAIR.SKIP_CORRUPT_BLOCKS procedure.
MONITORING	VARCHAR2(3)		Whether the table has the MONITORING attribute set
CLUSTER_OWNER	VARCHAR2(30)		Owner of the cluster, if any, to which the table belongs
DEPENDENCIES	VARCHAR2(8)		Indicates whether row-level dependency tracking is enabled (ENABLED) or disabled (DISABLED)
COMPRESSION	VARCHAR2(8)		Indicates whether table compression is enabled (ENABLED) or not (DISABLED); null for partitioned tables
DROPPED	VARCHAR2(3)		Indicates whether the table has been dropped and is in the recycle bin (YES) or not (NO); null for partitioned tables

user_tab_columns

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the table, view, or cluster
TABLE_NAME	VARCHAR2(30)	NOT NULL	Name of the table, view, or cluster
COLUMN_NAME	VARCHAR2(30)	NOT NULL	Column name
DATA_TYPE	VARCHAR2(106)		Datatype of the column
DATA_TYPE_MOD	VARCHAR2(3)		Datatype modifier of the column
DATA_TYPE_OWNER	VARCHAR2(30)		Owner of the datatype of the column
DATA_LENGTH	NUMBER	NOT NULL	Length of the column (in bytes)
DATA_PRECISION	NUMBER		Decimal precision for NUMBER datatype; binary precision for FLOAT datatype, null for all other datatypes
DATA_SCALE	NUMBER		Digits to right of decimal point in a number
NULLABLE	VARCHAR2(1)		Specifies whether a column allows NULLs. Value is N if there is a NOT NULL constraint on the column or if the column is part of a PRIMARY KEY.
COLUMN_ID	NUMBER		Sequence number of the column as created
DEFAULT_LENGTH	NUMBER		Length of default value for the column
DATA_DEFAULT	LONG		Default value for the column
NUM_DISTINCT	NUMBER		Number of distinct values in the column
LOW_VALUE	RAW(32)		Low value in the column
HIGH_VALUE	RAW(32)		High value in the column
DENSITY	NUMBER		Density of the column
NUM_NULLS	NUMBER		Number of nulls in the column
NUM_BUCKETS	NUMBER		Number of buckets in the histogram for the column Note: The number of buckets in a histogram is specified in the SIZE parameter of the SQL statement ANALYZE. However, the Oracle Database does not create a histogram with more buckets than the number of rows in the sample. Also, if the sample contains any values that are very repetitious, the Oracle Database creates the specified number of buckets, but the value indicated by this column may be smaller because of an internal compression algorithm.
LAST_ANALYZED	DATE		Date on which this column was most recently analyzed
SAMPLE_SIZE	NUMBER		Sample size used in analyzing this column
CHARACTER_SET_NAME	VARCHAR2(44)		Name of the character set: CHAR_CS or NCHAR_CS
CHAR_COL_DECL_LENGTH	NUMBER		Length
GLOBAL_STATS	VARCHAR2(3)		For partitioned tables, indicates whether column statistics were collected for the table as a whole (YES) or were estimated from statistics on underlying partitions and subpartitions (NO)
USER_STATS	VARCHAR2(3)		Indicates whether statistics were entered directly by the user (YES) or not (NO)
AVG_COL_LEN	NUMBER		Average length of the column (in bytes)
CHAR_LENGTH	NUMBER		Displays the length of the column in characters. This value only applies to the following datatypes: · CHAR · VARCHAR2 · NCHAR · NVARCHAR
CHAR_USED	VARCHAR2(1)		B \| C. B indicates that the column uses BYTE length semantics. C indicates that the column uses CHAR length semantics. NULL indicates the datatype is not any of the following: · CHAR · VARCHAR2 · NCHAR · NVARCHAR2
V80_FMT_IMAGE	VARCHAR2(3)		Indicates whether the column data is in release 8.0 image format (YES) or not (NO)
DATA_UPGRADED	VARCHAR2(3)		Indicates whether the column data has been upgraded to the latest type version format (YES) or not (NO)
HISTOGRAM	VARCHAR2(15)		Indicates existence/type of histogram: · NONE · FREQUENCY · HEIGHT BALANCED

user_constraints

USER_CONSTRAINTS describes all constraint definitions on tables owned by the current user. Its columns are the same as those in .

user_sys_privs

USER_SYS_PRIVS lists system privileges granted to the current user. Its columns are the same as those in .

user_tab_privs

USER_TAB_PRIVS describes the object grants for which the current user is the object owner, grantor, or grantee. Its columns are the same as those in DBA_TAB_PRIVS.

user_col_privs

USER_COL_PRIVS describes the column object grants for which the current user is the object owner, grantor, or grantee. Its columns are the same as those in DBA_COL_PRIVS.

user_role_privs

Column	Datatype	NULL	Description
USERNAME	VARCHAR2(30)		Name of the user, or PUBLIC
GRANTED_ROLE	VARCHAR2(30)		Name of the role granted to the user
ADMIN_OPTION	VARCHAR2(3)		Indicates whether the grant was with the ADMIN OPTION (YES) or not (NO)
DEFAULT_ROLE	VARCHAR2(3)		Indicates whether the role is designated as a DEFAULT ROLE for the user (YES) or not (NO)
OS_GRANTED	VARCHAR2(3)		Granted by the operating system (YES) or not (NO); occurs if configuration parameter OS_ROLES = true.

user_indexes

USER_INDEXES describes indexes owned by the current user. To gather statistics for this view, use the SQL ANALYZE statement. This view supports parallel partitioned index scans. Its columns (except for OWNER) are the same as those in .

user_ind_columns

USER_IND_COLUMNS describes the columns of the indexes owned by the current user and columns of indexes on tables owned by the current user. Its columns are the same as those in .

user_cons_columns

USER_CONS_COLUMNS describes columns that are owned by the current user and that are specified in constraint definitions. Its columns are the same as those in .

user_clusters

USER_CLUSTERS describes all the clusters owned by the current user. Its columns are the same as those in .

user_clu_columns

USER_CLU_COLUMNS maps columns in the current user's tables to cluster columns. Its columns are the same as those in .

user_cluster_hash_expressions

USER_CLUSTER_HASH_EXPRESSIONS lists hash functions for the hash clusters owned by the current user. Its columns are the same as those in .

v$database

Column	Datatype	Description
DBID	NUMBER	Database identifier calculated when the database is created and stored in all file headers
NAME	VARCHAR2(9)	Name of the database
CREATED	DATE	Creation date of the database
RESETLOGS_CHANGE#	NUMBER	System change number (SCN) at open resetlogs
RESETLOGS_TIME	DATE	Timestamp of open resetlogs
PRIOR_RESETLOGS_CHANGE#	NUMBER	SCN at prior resetlogs
PRIOR_RESETLOGS_TIME	DATE	Timestamp of prior resetlogs
LOG_MODE	VARCHAR2(12)	Archive log mode: NOARCHIVELOG ARCHIVELOG MANUAL
CHECKPOINT_CHANGE#	NUMBER	Last SCN checkpointed
ARCHIVE_CHANGE#	NUMBER	Database force archiving SCN. Any redo log with a start SCN below this will be forced to archive out.
CONTROLFILE_TYPE	VARCHAR2(7)	Type of control file: STANDBY - Indicates that the database is in standby mode CLONE - Indicates a clone database BACKUP \| CREATED - Indicates the database is being recovered using a backup or created control file CURRENT - database is available for general use
CONTROLFILE_CREATED	DATE	Creation date of the control file
CONTROLFILE_SEQUENCE#	NUMBER	Control file sequence number incremented by control file transactions
CONTROLFILE_CHANGE#	NUMBER	Last SCN in backup control file; null if the control file is not a backup
CONTROLFILE_TIME	DATE	Last timestamp in backup control file; null if the control file is not a backup
OPEN_RESETLOGS	VARCHAR2(11)	(NOT ALLOWED \| ALLOWED \| REQUIRED) Indicates whether the next database open allows or requires the resetlogs option
VERSION_TIME	DATE	Version time
OPEN_MODE	VARCHAR2(10)	Open mode information: MOUNTED READ WRITE READ ONLY
PROTECTION_MODE	VARCHAR2(20)	Protection mode currently in effect for the database: MAXIMUM PROTECTION - Database is running in maximized protection mode MAXIMUM AVAILABILITY - Database is running in maximized availability mode RESYNCHRONIZATION - Database is running in resynchronization mode MAXIMUM PERFORMANCE - Database is running in maximized protection mode UNPROTECTED - Database is unprotected (this normally occurs when the primary database is mounted and not open)
PROTECTION_LEVEL	VARCHAR2(20)	Aggregated protection mode currently in effect for the database: MAXIMUM PROTECTION - Database is running in maximized protection mode MAXIMUM AVAILABILITY - Database is running in maximized availability mode RESYNCHRONIZATION - Database is running in resynchronization mode MAXIMUM PERFORMANCE - Database is running in maximized protection mode UNPROTECTED - Database is unprotected (this normally occurs when the primary database is mounted and not open) Note: This column is an aggregation of the PROTECTION_MODE of all standby archive log destinations.
REMOTE_ARCHIVE	VARCHAR2(8)	Value of the REMOTE_ARCHIVE_ENABLE initialization parameter
ACTIVATION#	NUMBER	Number assigned to the database instantiation
SWITCHOVER#	NUMBER	Number assigned to the database switchover
DATABASE_ROLE	VARCHAR2(16)	Current role of the database: SNAPSHOT STANDBY LOGICAL STANDBY PHYSICAL STANDBY PRIMARY
ARCHIVELOG_CHANGE#	NUMBER	Highest NEXT_CHANGE# (from the V$ARCHIVED_LOG view) for an archive log
ARCHIVELOG_COMPRESSION	VARCHAR2(8)	Status of the archive log compression (ENABLED) or (DISABLED)
SWITCHOVER_STATUS	VARCHAR2(20)	Indicates whether switchover is allowed: NOT ALLOWED - Either this is a standby database and the primary database has not been switched first or this is a primary database and there are no standby databases. SESSIONS ACTIVE - Indicates that there are active SQL sessions attached to the primary or standby database that need to be disconnected before the switchover operation is permitted. Query the V$SESSION view to identify the specific processes that need to be terminated. SWITCHOVER PENDING - This is a standby database and the primary database switchover request has been received but not processed. SWITCHOVER LATENT - The switchover was in pending mode, but did not complete and went back to the primary database. TO PRIMARY - This is a standby database and is allowed to switch over to a primary database. TO STANDBY - This is a primary database and is allowed to switch over to a standby database. RECOVERY NEEDED - This is a standby database that has not received the switchover request. PREPARING SWITCHOVER - Either this is a primary database that is accepting redo data from a logical standby database in preparation for switch over to the logical standby database role, or it is a logical standby database sending redo data to a primary database and other standby databases in preparation for switch over to the primary database role. In the latter case, a completed dictionary has already been sent to the primary database and other standby databases. PREPARING DICTIONARY - This is a logical standby database that is sending redo data to a primary database and other standby databases in the configuration in preparation for switch over to the primary database role. TO LOGICAL STANDBY - This is a primary database that has received a complete dictionary from a logical standby database.
DATAGUARD_BROKER	VARCHAR2(8)	Indicates whether the Data Guard configuration is being managed by the broker (ENABLED) or not (DISABLED)
GUARD_STATUS	VARCHAR2(7)	Protects data from being changed: ALL - Indicates all users other than SYS are prevented from making changes to any data in the database. STANDBY - Indicates all users other than SYS are prevented from making changes to any database object being maintained by logical standby. NONE - Indicates normal security for all data in the database.
SUPPLEMENTAL_LOG_DATA_MIN	VARCHAR2(8)	Ensures that LogMiner (and any products building on LogMiner technology) will have sufficient information to support chained rows and various storage arrangements such as cluster tables: NO - None of the database-wide supplemental logging directives are enabled IMPLICIT - Minimal supplemental logging is enabled because all or a combination of primary key, unique key, and foreign key supplemental logging is enabled YES - Minimal supplemental logging is enabled through an ALTER DATABASE ADD SUPPLEMENTAL LOG DATA statement See Also: for additional information about the ALTER DATABASE ADD SUPPLEMENTAL LOG DATA statement
SUPPLEMENTAL_LOG_DATA_PK	VARCHAR2(3)	For all tables with a primary key, indicates whether all columns of the primary key are placed into the redo log whenever an update is performed (YES) or not (NO) See Also: for more information about the ALTER DATABASE ADD SUPPLEMENTAL LOG supplemental_id_key_clause statement
SUPPLEMENTAL_LOG_DATA_UI	VARCHAR2(3)	For all tables with a unique key, indicates whether all other columns belonging to the unique key are placed into the redo log if any of the unique key columns are modified (YES) or not (NO) See Also: for more information about the ALTER DATABASE ADD SUPPLEMENTAL LOG supplemental_id_key_clause statement
FORCE_LOGGING	VARCHAR2(3)	Indicates whether the database is under force logging mode (YES) or not (NO)
PLATFORM_ID	NUMBER	Platform identification number of the database
PLATFORM_NAME	VARCHAR2(101)	Platform name of the database
RECOVERY_TARGET_INCARNATION#	NUMBER	Incarnation number where all datafiles are recovered by the RECOVER DATABASE command
LAST_OPEN_INCARNATION#	NUMBER	Record number of the incarnation in V$DATABASE_INCARNATION that was last opened successfully
CURRENT_SCN	NUMBER	Current SCN; null if the database is not currently open. For a standby database, the current standby redo application SCN.
FLASHBACK_ON	VARCHAR2(18)	Possible values are as follows: YES - Flashback is on NO - Flashback is off RESTORE POINT ONLY - Flashback is on but one can only flashback to guaranteed restore points
SUPPLEMENTAL_LOG_DATA_FK	VARCHAR2(3)	For all tables with a foreign key, indicates whether all other columns belonging to the foreign key are placed into the redo log if any foreign key columns are modified (YES) or not (NO) See Also: for more information about the ALTER DATABASE ADD SUPPLEMENTAL LOG supplemental_id_key_clause statement
SUPPLEMENTAL_LOG_DATA_ALL	VARCHAR2(3)	For all columns, indicates whether all the fixed-length maximum size columns of that row are placed into the redo log (YES) or not (NO) See Also: for more information about the ALTER DATABASE ADD SUPPLEMENTAL LOG supplemental_id_key_clause statement
DB_UNIQUE_NAME	VARCHAR2(30)	Unique database name
STANDBY_BECAME_PRIMARY_SCN	NUMBER	SCN at which a physical standby database became a primary database. This SCN is useful for converting a failed primary database into a physical standby database after a forced failover. See Also:
FS_FAILOVER_STATUS	VARCHAR2(21)	Fast-start failover status: DISABLED BYSTANDER SYNCHRONIZED UNSYNCHRONIZED SUSPENDED STALLED LOADING DICTIONARY PRIMARY UNOBSERVED REINSTATE REQUIRED REINSTATE IN PROGRESS REINSTATE FAILED TARGET OVER LAG LIMIT TARGET UNDER LAG LIMIT See Also: for detailed descriptions of these values
FS_FAILOVER_CURRENT_TARGET	VARCHAR2(30)	DB_UNIQUE_NAME of the standby that is the current FSFO target standby for the Data Guard configuration
FS_FAILOVER_THRESHOLD	NUMBER	Time (in seconds) that the observer will attempt to reconnect with a disconnected primary before attempting FSFO with the target standby
FS_FAILOVER_OBSERVER_PRESENT	VARCHAR2(7)	Indicates whether the observer is currently connected to the local database (YES) or not (NO) Note: This column is consistent throughout an Oracle RAC environment; that is, if the observer is connected to any instance, then all instances will show a value of YES.
FS_FAILOVER_OBSERVER_HOST	VARCHAR2(512)	Machine name that is currently hosting the observer process
CONTROLFILE_CONVERTED	VARCHAR2(3)	??? (YES) or (NO)
PRIMARY_DB_UNIQUE_NAME	VARCHAR2(30)	For any Standby database (Physical, Logical, or Reporting), this column will contain the DB_UNIQUE_NAME of the Primary database that this Standby last received current redo from. If this standby has not received any current redo since last being started, then this column will be null. For a Primary database that had previously been a Standby, this column will contain the DB_UNIQUE_NAME of the last Primary that this database received current redo from while acting as a Standby. For a Primary database that has never been a Standby, this column will be null.
SUPPLEMENTAL_LOG_DATA_PL	VARCHAR2(3)	??? (YES) or (NO)
MIN_REQUIRED_CAPTURE_CHANGE#	VARCHAR2(40)	Minimum REQUIRED_CHECKPOINT_SCN for all local capture processes on the database

v$datafile

Column	Datatype	Description
FILE#	NUMBER	File identification number
CREATION_CHANGE#	NUMBER	Change number at which the datafile was created
CREATION_TIME	DATE	Timestamp of the datafile creation
TS#	NUMBER	Tablespace number
RFILE#	NUMBER	Tablespace relative datafile number
STATUS	VARCHAR2(7)	Type of file (system or user) and its status. Values: OFFLINE, ONLINE, SYSTEM, RECOVER, SYSOFF (an offline file from the SYSTEM tablespace)
ENABLED	VARCHAR2(10)	Describes how accessible the file is from SQL: DISABLED - No SQL access allowed READ ONLY - No SQL updates allowed READ WRITE - Full access allowed UNKNOWN - should not occur unless the control file is corrupted
CHECKPOINT_CHANGE#	NUMBER	SCN at last checkpoint
CHECKPOINT_TIME	DATE	Timestamp of the checkpoint#
UNRECOVERABLE_CHANGE#	NUMBER	Last unrecoverable change number made to this datafile. If the database is in ARCHIVELOG mode, then this column is updated when an unrecoverable operation completes. If the database is not in ARCHIVELOG mode, this column does not get updated.
UNRECOVERABLE_TIME	DATE	Timestamp of the last unrecoverable change. This column is updated only if the database is in ARCHIVELOG mode.
LAST_CHANGE#	NUMBER	Last change number made to this datafile (null if the datafile is being changed)
LAST_TIME	DATE	Timestamp of the last change
OFFLINE_CHANGE#	NUMBER	Offline change number of the last offline range. This column is updated only when the datafile is brought online.
ONLINE_CHANGE#	NUMBER	Online change number of the last offline range
ONLINE_TIME	DATE	Online timestamp of the last offline range
BYTES	NUMBER	Current datafile size (in bytes); 0 if inaccessible
BLOCKS	NUMBER	Current datafile size (in blocks); 0 if inaccessible
CREATE_BYTES	NUMBER	Size when created (in bytes)
BLOCK_SIZE	NUMBER	Block size of the datafile
NAME	VARCHAR2(513)	Name of the datafile
PLUGGED_IN	NUMBER	Describes whether the tablespace is plugged in. The value is 1 if the tablespace is plugged in and has not been made read/write, 0 if not.
BLOCK1_OFFSET	NUMBER	Offset from the beginning of the file to where the Oracle generic information begins. The exact length of the file can be computed as follows: BYTES + BLOCK1_OFFSET.
AUX_NAME	VARCHAR2(513)	Auxiliary name that has been set for this file via CONFIGURE AUXNAME
FIRST_NONLOGGED_SCN	NUMBER	First nonlogged SCN
FIRST_NONLOGGED_TIME	DATE	First nonlogged time

v$controlfile

Column	Datatype	Description
STATUS	VARCHAR2(7)	INVALID if the name cannot be determined (which should not occur); NULL if the name can be determined
NAME	VARCHAR2(513)	Name of the control file
IS_RECOVERY_DEST_FILE	VARCHAR2(3)	Indicates whether the file was created in the flash recovery area (YES) or not (NO)
BLOCK_SIZE	NUMBER	Control file block size
FILE_SIZE_BLKS	NUMBER	Control file size (in blocks)

v$logfile

Column	Datatype	Description
GROUP#	NUMBER	Redo log group identifier number
STATUS	VARCHAR2(7)	Status of the log member: · INVALID - File is inaccessible · STALE - File's contents are incomplete · DELETED - File is no longer used · null - File is in use
TYPE	VARCHAR2(7)	Type of the logfile: · ONLINE · STANDBY
MEMBER	VARCHAR2(513)	Redo log member name
IS_RECOVERY_DEST_FILE	VARCHAR2(3)	Indicates whether the file was created in the flash recovery area (YES) or not (NO)

v$instance

Column	Datatype	Description
INSTANCE_NUMBER	NUMBER	Instance number used for instance registration (corresponds to the INSTANCE_NUMBER initialization parameter) See Also:
INSTANCE_NAME	VARCHAR2(16)	Name of the instance
HOST_NAME	VARCHAR2(64)	Name of the host machine
VERSION	VARCHAR2(17)	Database version
STARTUP_TIME	DATE	Time when the instance was started
STATUS	VARCHAR2(12)	Status of the instance: STARTED - After STARTUP NOMOUNT MOUNTED - After STARTUP MOUNT or ALTER DATABASE CLOSE OPEN - After STARTUP or ALTER DATABASE OPEN OPEN MIGRATE - After ALTER DATABASE OPEN { UPGRADE \| DOWNGRADE }
PARALLEL	VARCHAR2(3)	Indicates whether the instance is mounted in cluster database mode (YES) or not (NO)
THREAD#	NUMBER	Redo thread opened by the instance
ARCHIVER	VARCHAR2(7)	(STOPPED \| STARTED \| FAILED) FAILED means that the archiver failed to archive a log last time, but will try again within 5 minutes
LOG_SWITCH_WAIT	VARCHAR2(11)	The ARCHIVE LOG/CLEAR LOG/CHECKPOINT event log switching is waiting for. Note that if ALTER SYSTEM SWITCH LOGFILE is hung, but there is room in the current online redo log, then value is NULL
LOGINS	VARCHAR2(10)	ALLOWED \| RESTRICTED
SHUTDOWN_PENDING	VARCHAR2(3)	YES \| NO
DATABASE_STATUS	VARCHAR2(17)	Status of the database
INSTANCE_ROLE	VARCHAR2(18)	Describes whether the instance is an active instance (PRIMARY_INSTANCE) or an inactive secondary instance (SECONDARY_INSTANCE), or UNKNOWN if the instance has been started but not mounted
ACTIVE_STATE	VARCHAR2(9)	(NORMAL\|QUIESCING\|QUIESCED). NORMAL indicates the database is in a normal state. QUIESCING indicates that the ALTER SYSTEM QUIESCE RESTRICTED statement has been issued: no new user transactions, queries, or PL/SQL statements are processed in this instance. User transactions, queries, or PL/SQL statements issued before the ALTER SYSTEM QUIESCE RESTRICTED statement are unaffected. DBA transactions, queries, or PL/SQL statements are also unaffected. QUIESCED indicates that the ALTER SYSTEM QUIESCE RESTRICTED statement has been issued: no user transactions, queries, or PL/SQL statements are processed. DBA transactions, queries, or PL/SQL statements are unaffected. User transactions, queries, or PL/SQL statements issued after the ALTER SYSTEM QUIESCE RESTRICTED statement are not processed. Note that a single ALTER SYSTEM QUIESCE RESTRICTED statement quiesces all instances in a Real Application Clusters environment. After this statement has been issued, some instances may enter into a quiesced state before other instances; the system is quiesced when all instances enter the quiesced state.

v$log

Column	Datatype	Description
GROUP#	NUMBER	Log group number
THREAD#	NUMBER	Log thread number
SEQUENCE#	NUMBER	Log sequence number
BYTES	NUMBER	Size of the log (in bytes)
MEMBERS	NUMBER	Number of members in the log group
ARCHIVED	VARCHAR2(3)	Archive status (YES or NO)
STATUS	VARCHAR2(16)	Log status: · UNUSED - Online redo log has never been written to. This is the state of a redo log that was just added, or just after a RESETLOGS, when it is not the current redo log. · CURRENT - Current redo log. This implies that the redo log is active. The redo log could be open or closed. · ACTIVE - Log is active but is not the current log. It is needed for crash recovery. It may be in use for block recovery. It may or may not be archived. · CLEARING - Log is being re-created as an empty log after an ALTER DATABASE CLEAR LOGFILE statement. After the log is cleared, the status changes to UNUSED. · CLEARING_CURRENT - Current log is being cleared of a closed thread. The log can stay in this status if there is some failure in the switch such as an I/O error writing the new log header. · INACTIVE - Log is no longer needed for instance recovery. It may be in use for media recovery. It might or might not be archived. · INVALIDATED - Archived the current redo log without a log switch.
FIRST_CHANGE#	NUMBER	Lowest system change number (SCN) in the log
FIRST_TIME	DATE	Time of the first SCN in the log

v$loghist

Column	Datatype	Description
THREAD#	NUMBER	Log thread number
SEQUENCE#	NUMBER	Log sequence number
FIRST_CHANGE#	NUMBER	Lowest SCN in the log
FIRST_TIME	DATE	Time of first SCN in the log
SWITCH_CHANGE#	NUMBER	SCN at which the log switch occurred; one more than highest SCN in the log

v$sga

Column	Datatype	Description
NAME	VARCHAR2(20)	SGA component group
VALUE	NUMBER	Memory size (in bytes)

v$parameter

Column	Datatype	Description
NUM	NUMBER	Parameter number
NAME	VARCHAR2(80)	Name of the parameter
TYPE	NUMBER	Parameter type: 1 - Boolean 2 - String 3 - Integer 4 - Parameter file 5 - Reserved 6 - Big integer
VALUE	VARCHAR2(4000)	Parameter value for the session (if modified within the session); otherwise, the instance-wide parameter value
DISPLAY_VALUE	VARCHAR2(4000)	Parameter value in a user-friendly format. For example, if the VALUE column shows the value 262144 for a big integer parameter, then the DISPLAY_VALUE column will show the value 256K.
ISDEFAULT	VARCHAR2(9)	Indicates whether the parameter is set to the default value (TRUE) or the parameter value was specified in the parameter file (FALSE)
ISSES_MODIFIABLE	VARCHAR2(5)	Indicates whether the parameter can be changed with ALTER SESSION (TRUE) or not (FALSE)
ISSYS_MODIFIABLE	VARCHAR2(9)	Indicates whether the parameter can be changed with ALTER SYSTEM and when the change takes effect: IMMEDIATE - Parameter can be changed with ALTER SYSTEM regardless of the type of parameter file used to start the instance. The change takes effect immediately. DEFERRED - Parameter can be changed with ALTER SYSTEM regardless of the type of parameter file used to start the instance. The change takes effect in subsequent sessions. FALSE - Parameter cannot be changed with ALTER SYSTEM unless a server parameter file was used to start the instance. The change takes effect in subsequent instances.
ISINSTANCE_MODIFIABLE	VARCHAR2(5)	For parameters that can be changed with ALTER SYSTEm, indicates whether the value of the parameter can be different for every instance (TRUE) or whether the parameter must have the same value for all Real Application Clusters instances (FALSE). If the ISSYS_MODIFIABLE column is FALSE, then this column is always FALSE.
ISMODIFIED	VARCHAR2(10)	Indicates whether the parameter has been modified after instance startup: MODIFIED - Parameter has been modified with ALTER SESSION SYSTEM_MOD - Parameter has been modified with ALTER SYSTEM (which causes all the currently logged in sessions' values to be modified) FALSE - Parameter has not been modified after instance startup
ISADJUSTED	VARCHAR2(5)	Indicates whether Oracle adjusted the input value to a more suitable value (for example, the parameter value should be prime, but the user input a non-prime number, so Oracle adjusted the value to the next prime number)
ISDEPRECATED	VARCHAR2(5)	Indicates whether the parameter has been deprecated (TRUE) or not (FALSE)
ISBASIC	VARCHAR2(5)	Indicates whether the parameter is a basic parameter (TRUE) or not (FALSE)
DESCRIPTION	VARCHAR2(255)	Description of the parameter
UPDATE_COMMENT	VARCHAR2(255)	Comments associated with the most recent update
HASH	NUMBER	Hash value for the parameter name

v$process

Column	Datatype	Description
ADDR	RAW(4 \| 8)	Address of the process state object
PID	NUMBER	Oracle process identifier
SPID	VARCHAR2(24)	Operating system process identifier
PNAME	VARCHAR2(5)	Name of this process
USERNAME	VARCHAR2(15)	Operating system process username Note: Any two-task user coming across the network has "-T" appended to the username.
SERIAL#	NUMBER	Process serial number
TERMINAL	VARCHAR2(30)	Operating system terminal identifier
PROGRAM	VARCHAR2(48)	Program in progress
TRACEID	VARCHAR2(255)	Trace file identifier
TRACEFILE	VARCHAR2(513)	Trace file name of the process
BACKGROUND	VARCHAR2(1)	1 for a background process; NULL for a normal process
LATCHWAIT	VARCHAR2(8)	Address of the latch the process is waiting for; NULL if none
LATCHSPIN	VARCHAR2(8)	Address of the latch the process is spinning on; NULL if none
PGA_USED_MEM	NUMBER	PGA memory currently used by the process
PGA_ALLOC_MEM	NUMBER	PGA memory currently allocated by the process (including free PGA memory not yet released to the operating system by the server process)
PGA_FREEABLE_MEM	NUMBER	Allocated PGA memory which can be freed
PGA_MAX_MEM	NUMBER	Maximum PGA memory ever allocated by the process

v$bgprocess

Column	Datatype	Description
PADDR	RAW(4 \| 8)	Address of the process state object
PSERIAL#	NUMBER	Process state object serial number
NAME	VARCHAR2(5)	Name of this background process
DESCRIPTION	VARCHAR2(64)	Description of the background process
ERROR	NUMBER	Error encountered

v$controlfile_record_section

Column	Datatype	Description
TYPE	VARCHAR2(28)	Identifies the type of record section: DATABASE CKPT PROGRESS REDO THREAD REDO LOG DATAFILE FILENAME TABLESPACE TEMPORARY FILENAME RMAN CONFIGURATION LOG HISTORY OFFLINE RANGE ARCHIVED LOG BACKUP SET BACKUP PIECE BACKUP DATAFILE BACKUP REDOLOG DATAFILE COPY BACKUP CORRUPTION COPY CORRUPTION DELETED OBJECT PROXY COPY BACKUP SPFILE DATABASE INCARNATION FLASHBACK LOG RECOVERY DESTINATION INSTANCE SPACE RESERVATION REMOVABLE RECOVERY FILES RMAN STATUS THREAD INSTANCE NAME MAPPING MTTR DATAFILE HISTORY PLUGGED IN DATAFILE
RECORD_SIZE	NUMBER	Record size in bytes
RECORDS_TOTAL	NUMBER	Number of records allocated for the section
RECORDS_USED	NUMBER	Number of records used in the section
FIRST_INDEX	NUMBER	Index (position) of the first record
LAST_INDEX	NUMBER	Index of the last record
LAST_RECID	NUMBER	Record ID of the last record

v$thread

Column	Datatype	Description
THREAD#	NUMBER	Thread number
STATUS	VARCHAR2(6)	Thread status (OPEN\| CLOSED)
ENABLED	VARCHAR2(8)	Enabled status: DISABLED, (enabled) PRIVATE, or (enabled) PUBLIC
GROUPS	NUMBER	Number of log groups assigned to this thread
INSTANCE	VARCHAR2(16)	Instance name, if available
OPEN_TIME	DATE	Last time the thread was opened
CURRENT_GROUP#	NUMBER	Current log group
SEQUENCE#	NUMBER	Sequence number of current log
CHECKPOINT_CHANGE#	NUMBER	SCN at last checkpoint
CHECKPOINT_TIME	DATE	Time of last checkpoint
ENABLE_CHANGE#	NUMBER	SCN at which thread was enabled
ENABLE_TIME	DATE	Time of enable SCN
DISABLE_CHANGE#	NUMBER	SCN at which thread was disabled
DISABLE_TIME	DATE	Time of disable SCN
LAST_REDO_SEQUENCE#	NUMBER	Last redo sequence number written by LGWR
LAST_REDO_BLOCK	NUMBER	Last redo block written by LGWR
LAST_REDO_CHANGE#	NUMBER	SCN of last redo for the thread
LAST_REDO_TIME	DATE	Time of last redo for the thread

v$datafile_header

Column	Datatype	Description
FILE#	NUMBER	Datafile number (from control file)
STATUS	VARCHAR2(7)	ONLINE \| OFFLINE (from control file)
ERROR	VARCHAR2(18)	NULL if the datafile header read and validation were successful. If the read failed then the rest of the columns are NULL. If the validation failed then the rest of columns may display invalid data. If there is an error then usually the datafile must be restored from a backup before it can be recovered or used.
FORMAT	NUMBER	Indicates the format for the header block. The possible values are 6, 7, 8, 10 or 0. 6 - indicates Oracle Version 6 7 - indicates Oracle Version 7 8 - indicates Oracle Version 8 10 - indicates Oracle Version 10 0 - indicates the format could not be determined (for example, the header could not be read)
RECOVER	VARCHAR2(3)	File needs media recovery (YES \| NO)
FUZZY	VARCHAR2(3)	File is fuzzy (YES \| NO)
CREATION_CHANGE#	NUMBER	Datafile creation change#
CREATION_TIME	DATE	Datafile creation timestamp
TABLESPACE_NAME	VARCHAR2(30)	Tablespace name
TS#	NUMBER	Tablespace number
RFILE#	NUMBER	Tablespace relative datafile number
RESETLOGS_CHANGE#	NUMBER	Resetlogs change#
RESETLOGS_TIME	DATE	Resetlogs timestamp
CHECKPOINT_CHANGE#	NUMBER	Datafile checkpoint change#
CHECKPOINT_TIME	DATE	Datafile checkpoint timestamp
CHECKPOINT_COUNT	NUMBER	Datafile checkpoint count
BYTES	NUMBER	Current datafile size in bytes
BLOCKS	NUMBER	Current datafile size in blocks
NAME	VARCHAR2(513)	Datafile name
SPACE_HEADER	VARCHAR2(40)	Represents the block address of a space file header block of a locally managed datafile
LAST_DEALLOC_SCN	VARCHAR2(16)	Last deallocated SCN
UNDO_OPT_CURRENT_CHANGE#	VARCHAR2(40)	For internal use only

v$archived_log

Column	Datatype	Description
RECID	NUMBER	Archived log record ID
STAMP	NUMBER	Archived log record stamp
NAME	VARCHAR2(513)	Archived log file name. If set to NULL, either the log file was cleared before it was archived or an RMAN backup command with the "delete input" option was executed to back up archivelog all (RMAN> backup archivelog all delete input;).
DEST_ID	NUMBER	Original destination from which the archive log was generated. The value is 0 if the destination identifier is not available.
THREAD#	NUMBER	Redo thread number
SEQUENCE#	NUMBER	Redo log sequence number
RESETLOGS_CHANGE#	NUMBER	Resetlogs change number of the database when the log was written
RESETLOGS_TIME	DATE	Resetlogs time of the database when the log was written
RESETLOGS_ID	NUMBER	Resetlogs identifier associated with the archived redo log
FIRST_CHANGE#	NUMBER	First change number in the archived log
FIRST_TIME	DATE	Timestamp of the first change
NEXT_CHANGE#	NUMBER	First change in the next log
NEXT_TIME	DATE	Timestamp of the next change
BLOCKS	NUMBER	Size of the archived log (in blocks)
BLOCK_SIZE	NUMBER	Redo log block size. This is the logical block size of the archived log, which is the same as the logical block size of the online log from which the archived log was copied. The online log logical block size is a platform-specific value that is not adjustable by the user.
CREATOR	VARCHAR2(7)	Creator of the archivelog: ARCH - Archiver process FGRD - Foreground process RMAN - Recovery Manager SRMN - RMAN at standby LGWR - Logwriter process
REGISTRAR	VARCHAR2(7)	Registrar of the entry: RFS - Remote File Server process ARCH - Archiver process FGRD - Foreground process RMAN - Recovery manager SRMN - RMAN at standby LGWR - Logwriter process
STANDBY_DEST	VARCHAR2(3)	Indicates whether the entry is an archivelog destination (YES) or not (NO)
ARCHIVED	VARCHAR2(3)	Indicates whether the online redo log was archived (YES) or whether RMAN only inspected the log and created a record for future application of redo logs during recovery (NO). See Also: .
APPLIED	VARCHAR2(9)	Indicates whether an archived redo log file has been applied to the corresponding physical standby database. The value is always NO for local destinations. This column is meaningful on a physical standby database for rows where REGISTRAR = RFS: If REGISTRAR = RFS and APPLIED = NO, then the log file has been received but has not yet been applied. If REGISTRAR = RFS and APPLIED = IN-MEMORY, then the log file has been applied in memory, but the datafiles have not yet been updated. If REGISTRAR = RFS and APPLIED = YES, then the log file has been applied and the datafiles have been updated. This column can be used to identify log files that can be backed up and deleted. When used for this purpose, the value IN-MEMORY should be treated as if it were NO.
DELETED	VARCHAR2(3)	Indicates whether an RMAN DELETE command has physically deleted the archived log file from disk, as well as logically removing it from the control file of the target database and from the recovery catalog (YES) or not (NO)
STATUS	VARCHAR2(1)	Status of the archived log: A - Available D - Deleted U - Unavailable X - Expired
COMPLETION_TIME	DATE	Time when the archiving completed
DICTIONARY_BEGIN	VARCHAR2(3)	Indicates whether the log contains the start of a LogMiner dictionary (YES) or not (NO)
DICTIONARY_END	VARCHAR2(3)	Indicates whether the log contains the end of a LogMiner dictionary (YES) or not (NO)
END_OF_REDO	VARCHAR2(3)	Indicates whether the archived redo log contains the end of all redo information from the primary database (YES) or not (NO)
BACKUP_COUNT	NUMBER	Indicates the number of times this file has been backed up. Values range from 0-15. If the file has been backed up more than 15 times, the value remains 15.
ARCHIVAL_THREAD#	NUMBER	Redo thread number of the instance that performed the archival operation. This column differs from the THREAD# column only when a closed thread is archived by another instance.
ACTIVATION#	NUMBER	Number assigned to the database instantiation
IS_RECOVERY_DEST_FILE	VARCHAR2(3)	Indicates whether the file was created in the fast recovery area (YES) or not (NO)
COMPRESSED	VARCHAR2(3)	Reserved for internal use
FAL	VARCHAR2(3)	Indicates whether the archive log was generated as the result of a FAL request (YES) or not (NO)
END_OF_REDO_TYPE	VARCHAR2(10)	Possible values are as follows: SWITCHOVER - Shows archived redo log files that are produced at the end of a switchover TERMINAL - Shows archived redo log files produced after a failover RESETLOGS - Shows online redo log files archived on the primary database after an ALTER DATABASE OPEN RESETLOGS statement is issued ACTIVATION - Shows any log files archived on a physical standby database after an ALTER DATABASE ACTIVATE STANDBY DATABASE statement is issued "empty string" - Any empty string implies that the log is just a normal archival and was not archived due to any of the other events
BACKED_BY_VSS	VARCHAR2(3)	Whether or not the file has been backed up by Volume Shadow Copy Service (VSS). This column is reserved for internal use.

v$archive_dest

Column	Datatype	Description
DEST_ID	NUMBER	Log archive destination parameter identifier (1 to 31)
DEST_NAME	VARCHAR2(256)	Log archive destination parameter name
STATUS	VARCHAR2(9)	Identifies the current status of the destination: VALID - Initialized and available INACTIVE - No destination information DEFERRED - Manually disabled by the user ERROR - Error during open or copy DISABLED - Disabled after error BAD PARAM - Parameter has errors ALTERNATE - Destination is in an alternate state FULL - Exceeded quota size for the destination
BINDING	VARCHAR2(9)	Specifies how failure will affect the archival operation: MANDATORY - Successful archival is required OPTIONAL - Successful archival is not required (depends on LOG_ARCHIVE_MIN_SUCCEED_DEST)
NAME_SPACE	VARCHAR2(7)	Identifies the scope of parameter setting: SYSTEM - System definition SESSION - Session definition
TARGET	VARCHAR2(7)	Specifies whether the archive destination is local or remote to the primary database: PRIMARY - local STANDBY - remote
ARCHIVER	VARCHAR2(10)	Identifies the archiver process relative to the database where the query is issued: ARCn FOREGROUND LGWR RFS
SCHEDULE	VARCHAR2(8)	Indicates whether the archival of this destination is INACTIVE, PENDING, ACTIVE, or LATENT
DESTINATION	VARCHAR2(256)	Specifies the location where the archived redo logs are to be archived
LOG_SEQUENCE	NUMBER	Identifies the sequence number of the last archived redo log to be archived
REOPEN_SECS	NUMBER	Identifies the retry time (in seconds) after error
DELAY_MINS	NUMBER	Identifies the delay interval (in minutes) before the archived redo log is automatically applied to a standby database
MAX_CONNECTIONS	NUMBER	Maximum number of connections
NET_TIMEOUT	NUMBER	Number of seconds the log writer process will wait for status from the network server of a network operation issued by the log writer process
PROCESS	VARCHAR2(10)	Identifies the archiver process relative to the primary database, even if the query is issued on the standby database: ARCn FOREGROUND LGWR
REGISTER	VARCHAR2(3)	Indicates whether the archived redo log is registered in the remote destination control file (YES) or not (NO). If the archived redo log is registered, it is available to log apply services.
FAIL_DATE	DATE	Date and time of last error
FAIL_SEQUENCE	NUMBER	Sequence number of the archived redo log being archived when the last error occurred
FAIL_BLOCK	NUMBER	Block number of the archived redo log being archived when the last error occurred
FAILURE_COUNT	NUMBER	Current number of contiguous archival operation failures that have occurred for the destination
MAX_FAILURE	NUMBER	Allows you to control the number of times log transport services will attempt to reestablish communication and resume archival operations with a failed destination
ERROR	VARCHAR2(256)	Displays the error text
ALTERNATE	VARCHAR2(256)	Alternate destination, if any
DEPENDENCY	VARCHAR2(256)	Reserved for future use
REMOTE_TEMPLATE	VARCHAR2(256)	Specifies the template to be used to derive the location to be recorded
QUOTA_SIZE	NUMBER	Destination quotas, expressed in bytes
QUOTA_USED	NUMBER	Size of all the archived redo logs currently residing on the specified destination
MOUNTID	NUMBER	Instance mount identifier
TRANSMIT_MODE	VARCHAR2(12)	Specifies network transmission mode: SYNCHRONOUS PARALLELSYNC ASYNCHRONOUS
ASYNC_BLOCKS	NUMBER	Number of blocks specified for the ASYNC attribute
AFFIRM	VARCHAR2(3)	Specifies disk I/O mode
TYPE	VARCHAR2(7)	Indicates whether the archived log destination definition is PUBLIC or PRIVATE. Only PUBLIC destinations can be modified at runtime using the ALTER SYSTEM SET or ALTER SESSION SET statements. By default, all archived log destinations are PUBLIC.
VALID_NOW	VARCHAR2(16)	Indicates whether the destination is valid right now for archival operations: YES - Redo log type and database role for this destination are valid for the current database WRONG VALID_TYPE - Redo log type specified for this destination is not valid for the current database role. For example, WRONG VALID_TYPE would be returned if a destination specified with the VALID_FOR=(STANDBY_LOGFILE,STANDBY_ROLE) attribute is running in the standby database role but does not have standby redo logs implemented. WRONG VALID_ROLE - Database role specified for this destination is not the role in which the database is currently running. For example, the WRONG VALID_ROLE would be returned when a destination defined with the VALID_FOR=(ONLINE_LOGFILE,STANDBY_ROLE) attribute is running in the primary database role. INACTIVE - Destination is inactive, probably due to an error
VALID_TYPE	VARCHAR2(15)	Redo log type or types that are valid for the destination: ONLINE_LOGFILE STANDBY_LOGFILE ALL_LOGFILES
VALID_ROLE	VARCHAR2(12)	Database role or roles that are valid for the destination: PRIMARY_ROLE STANDBY_ROLE ALL_ROLES
DB_UNIQUE_NAME	VARCHAR2(30)	Unique database name
VERIFY	VARCHAR2(3)	Indicates whether the value of the VERIFY attribute on the LOG_ARCHIVE_DEST_n parameter is verified (YES) or not verified (NO)
COMPRESSION	VARCHAR2(7)	Indicates whether network compression is ENABLED or DISABLED.
APPLIED_SCN	NUMBER	For a destination that corresponds to a physical or logical standby database, the SCN of the last applied redo. For a destination that corresponds to a snapshot standby database, the SCN of the last redo applied before conversion to a snapshot standby database. This column is only valid for enabled and active standby database destinations on a primary or cascading standby database.

v$logmnr_contents

Column	Datatype	Description
SCN	NUMBER	System change number (SCN) when the database change was made
START_SCN	NUMBER	System change number (SCN) when the transaction that contains this change started; only meaningful if the COMMITTED_DATA_ONLY option was chosen in a DBMS_LOGMNR.START_LOGMNR() invocation, NULL otherwise. This column may also be NULL if the query is run over a time/SCN range that does not contain the start of the transaction.
COMMIT_SCN	NUMBER	System change number (SCN) when the transaction committed; only meaningful if the COMMITTED_DATA_ONLY option was chosen in a DBMS_LOGMNR.START_LOGMNR() invocation
TIMESTAMP	DATE	Timestamp when the database change was made
START_TIMESTAMP	DATE	Timestamp when the transaction that contains this change started; only meaningful if the COMMITTED_DATA_ONLY option was chosen in a DBMS_LOGMNR.START_LOGMNR() invocation, NULL otherwise. This column may also be NULL if the query is run over a time/SCN range that does not contain the start of the transaction.
COMMIT_TIMESTAMP	DATE	Timestamp when the transaction committed; only meaningful if the COMMITTED_DATA_ONLY option was chosen in a DBMS_LOGMNR.START_LOGMNR() invocation
XIDUSN	NUMBER	Transaction ID undo segment number of the transaction that generated the change
XIDSLT	NUMBER	Transaction ID slot number of the transaction that generated the change
XIDSQN	NUMBER	Transaction ID sequence number of the transaction that generated the change
XID	RAW(8)	Raw representation of the transaction identifier
PXIDUSN	NUMBER	Parent transaction ID undo segment number of a parallel transaction
PXIDSLT	NUMBER	Parent transaction ID slot number of a parallel transaction
PXIDSQN	NUMBER	Parent transaction ID sequence number of a parallel transaction
PXID	RAW(8)	Raw representation of the parent transaction identifier
TX_NAME	VARCHAR2(256)	Name of the transaction that made the change; only meaningful if the transaction is a named transaction
OPERATION	VARCHAR2(32)	User level SQL operation that made the change: INSERT - Change was caused by an insert statement UPDATE - Change was caused by an update statement DELETE - Change was caused by a delete statement DDL - Change was caused by a DDL statement START - Change was caused by the start of a transaction COMMIT - Change was caused by the commit of a transaction ROLLBACK - Change was caused by a full rollback of a transaction LOB_WRITE - Change was caused by an invocation of DBMS_LOB.WRITE LOB_TRIM - Change was caused by an invocation of DBMS_LOB.TRIM LOB_ERASE - Change was caused by an invocation of DBMS_LOB.ERASE SELECT_FOR_UPDATE - Operation was a SELECT FOR UPDATE statement SEL_LOB_LOCATOR - Operation was a SELECT statement that returned a LOB locator MISSING_SCN - LogMiner encountered a gap in the redo records. This is most likely because not all redo logs were registered with LogMiner. INTERNAL - Change was caused by internal operations initiated by the database XML DOC BEGIN - Beginning of a change to an XMLType column or table XML DOC WRITE - Data for an XML document XML DOC END - End of the Data for an XML document UNSUPPORTED - Change was caused by operations not currently supported by LogMiner (for example, changes made to tables with ADT columns)
OPERATION_CODE	NUMBER	Number of the operation code: 0 - INTERNAL 1 - INSERT 2 - DELETE 3 - UPDATE 5 - DDL 6 - START 7 - COMMIT 9 - SELECT_LOB_LOCATOR 10 - LOB_WRITE 11 - LOB_TRIM 25 - SELECT_FOR_UPDATE 28 - LOB_ERASE 34 - MISSING_SCN 68 - XML DOC BEGIN 70 = XML DOC WRITE 71 = XML DOC END 36 - ROLLBACK 255 - UNSUPPORTED
ROLLBACK	NUMBER	1 = if the redo record was generated because of a partial or a full rollback of the associated transaction 0 = otherwise
SEG_OWNER	VARCHAR2(32)	Owner of the modified data segment
SEG_NAME	VARCHAR2(256)	Name of the modified data segment
TABLE_NAME	VARCHAR2(32)	Name of the modified table (in case the redo pertains to a table modification)
SEG_TYPE	NUMBER	Type of the modified data segment: 0 - UNKNOWN 1 - INDEX 2 - TABLE 19 - TABLE PARTITION 20 - INDEX PARTITION 34 - TABLE SUBPARTITION All other values - UNSUPPORTED
SEG_TYPE_NAME	VARCHAR2(32)	Segment type name: UNKNOWN INDEX TABLE TABLE PARTITION INDEX PARTITION TABLE SUBPARTITION UNSUPPORTED
TABLE_SPACE	VARCHAR2(32)	Name of the tablespace containing the modified data segment. This column is not populated for rows where the value of the OPERATION column is DDL. This is because DDL may operate on more than one tablespace.
ROW_ID	VARCHAR2(18)	Row ID of the row modified by the change (only meaningful if the change pertains to a DML). This will be NULL if the redo record is not associated with a DML.
USERNAME	VARCHAR2(30)	Name of the user who executed the transaction
OS_USERNAME	VARCHAR2(4000)	Name of the operating system user
MACHINE_NAME	VARCHAR2(4000)	Machine from which the user connected to the database
AUDIT_SESSIONID	NUMBER	Audit session ID associated with the user session making the change
SESSION#	NUMBER	Session number of the session that made the change
SERIAL#	NUMBER	Serial number of the session that made the change
SESSION_INFO	VARCHAR2(4000)	Information about the database session that executed the transaction. Contains process information, machine name from which the user logged in, and so on. A possible SESSION_INFO column may contain the following: login_username = HR client_info = OS_username = jkundu Machine_name = nirvan OS_terminal = pts/31 OS_program_name = sqlplus@nirvan (TNS V1-V3)
THREAD#	NUMBER	Number of the thread that made the change to the database
SEQUENCE#	NUMBER	Sequence number of the SQL statement within the transaction. If you are mining without the COMMITED_DATA_ONLY option set, then this value is 1.
RBASQN	NUMBER	Sequence# associated with the Redo Block Address (RBA) of the redo record associated with the change
RBABLK	NUMBER	RBA block number within the log file
RBABYTE	NUMBER	RBA byte offset within the block
UBAFIL	NUMBER	Undo Block Address (UBA) file number identifying the file containing the undo block
UBABLK	NUMBER	UBA block number for the undo block
UBAREC	NUMBER	UBA record index within the undo block
UBASQN	NUMBER	UBA undo block sequence number
ABS_FILE#	NUMBER	Data block absolute file number of the block changed by the transaction
REL_FILE#	NUMBER	Data block relative file number. The file number is relative to the tablespace of the object.
DATA_BLK#	NUMBER	Data block number within the file
DATA_OBJ#	NUMBER	Data block object number identifying the object
DATA_OBJV#	NUMBER	Version number of the table being modified
DATA_OBJD#	NUMBER	Data block data object number identifying the object within the tablespace
SQL_REDO	VARCHAR2(4000)	Reconstructed SQL statement that is equivalent to the original SQL statement that made the change. Refer to before executing SQL_REDO to your database. LogMiner does not generate SQL redo for temporary tables. In such a case, this column will contain the string "/* No SQL_REDO for temporary tables */".
SQL_UNDO	VARCHAR2(4000)	Reconstructed SQL statement that can be used to undo the effect of the original statement that made the change. DDL statements have no corresponding SQL_UNDO. Refer to before executing SQL_UNDO to your database. LogMiner does not generate SQL undo for temporary tables. In such a case, this column will contain the string "/* No SQL_UNDO for temporary tables */".
RS_ID	VARCHAR2(32)	Record set ID. The tuple (RS_ID, SSN) together uniquely identifies a logical row change. This will usually mean one row from V$LOGMNR_CONTENTS, but could be more than one row if a single SQL statement for either the Redo or Undo would be too large to fit within the respective columns SQL_UNDO or SQL_REDO. RS_ID uniquely identifies the redo record that generated the row.
SSN	NUMBER	SQL sequence number. Used in conjunction with RS_ID, this uniquely identifies a logical row change, shown as one or more rows from the V$LOGMNR_CONTENTS view.
CSF	NUMBER	Continuation SQL flag. Possible values are: 0 - Indicates SQL_REDO and SQL_UNDO is contained within the same row 1 - Indicates that either SQL_REDO or SQL_UNDO is greater than 4000 bytes in size and is continued in the next row returned by the view
INFO	VARCHAR2(32)	Informational message about the row. For instance, the string "USER DDL" indicates that the DDL statement returned in the SQL_REDO column was the top-level DDL executed by the user and the string "INTERNAL DDL" indicates that the DDL statement returned in the SQL_REDO column was executed internally by the RDBMS.
STATUS	NUMBER	A value of 0 indicates that the reconstructed SQL statements as shown in the SQL_REDO and SQL_UNDO columns are valid executable SQL statements. Otherwise, the reconstructed SQL statements are not executable. This may be due to the fact that no data dictionary was provided to LogMiner for the analysis, or that the data dictionary provided did not have the definition of the object being mined. A value of 5 indicates that this row is part of a change to an XMLType column or table and the XML document must be assembled before being applied.
REDO_VALUE	NUMBER	Used as input to the DBMS_LOGMNR.MINE_VALUE() and DBMS_LOGMNR.COLUMN_PRESENT() functions
UNDO_VALUE	NUMBER	Used as input to the DBMS_LOGMNR.MINE_VALUE() and DBMS_LOGMNR.COLUMN_PRESENT() functions
SAFE_RESUME_SCN	NUMBER	Reserved for future use
CSCN	NUMBER	This column is deprecated in favor of the COMMIT_SCN column
OBJECT_ID	RAW(16)	Object identifier for DMLs to XMLType tables. For changes to non-typed tables, this column is NULL.
EDITION_NAME	VARCHAR2(30)	Identifies the edition in which a DDL statement was executed
CLIENT_ID	VARCHAR2(64)	Client identifier in the session that performed the operation, if available.

v$logmnr_dictionary

Column	Datatype	Description
DB_NAME	VARCHAR2(9)	Name of the database
DB_ID	NUMBER	Database ID
DB_CREATED	DATE	Creation date of the source database (corresponds to the CREATED column in the V$DATABASE view)
TIMESTAMP	DATE	Date when the dictionary was created
RESET_SCN	NUMBER	Reset log SCN when the dictionary was created
RESET_SCN_TIME	DATE	Timestamp of the reset log SCN when the dictionary was created
DB_VERSION_TIME	DATE	Version time for the source database (corresponds to the VERSION_TIME column in the V$DATABASE view)
DB_CHARACTER_SET	VARCHAR2(30)	Character set of the source database
DB_VERSION	VARCHAR2(64)	This column is deprecated.
DB_STATUS	VARCHAR2(64)	This column is deprecated.
DICTIONARY_SCN	NUMBER	Database checkpoint SCN at which the dictionary was created
ENABLED_THREAD_MAP	RAW(16)	This column is deprecated.
DB_TXN_SCN	NUMBER	SCN at which the dictionary was created
FILENAME	VARCHAR2(512)	Dictionary file name
INFO	VARCHAR2(32)	Informational/Status message BAD_DATE indicates that the SCN of the dictionary file does not match the SCN range of the log files
STATUS	NUMBER	A NULL indicates a valid dictionary file for the list of log files. A non-NULL value indicates further information is contained in the INFO column as a text string.

v$logmnr_logs

Column	Datatype	Description
LOG_ID	NUMBER	This column is deprecated.
FILENAME	VARCHAR2(512)	Name of the log file
LOW_TIME	DATE	Oldest date of any records in the file
HIGH_TIME	DATE	Most recent date of any records in the file
DB_ID	NUMBER	Database ID
DB_NAME	VARCHAR2(8)	Name of the database
RESET_SCN	NUMBER	Resetlogs SCN of the database incarnation that generated the log file
RESET_SCN_TIME	DATE	Resetlogs timestamp of the database incarnation that generated the log file
COMPATIBLE	VARCHAR2(17)	The setting of the database COMPATIBLE initialization parameter at the time the log file was generated
THREAD_ID	NUMBER	Thread number
THREAD_SQN	NUMBER	Thread sequence number
LOW_SCN	NUMBER	SCN allocated when log switched into
NEXT_SCN	NUMBER	SCN after this log. Low SCN of the next log.
DICTIONARY_BEGIN	VARCHAR2(3)	Indicates whether dictionary dumped to redo logs starts in this redo log (YES) or not (NO)
DICTIONARY_END	VARCHAR2(3)	Indicates whether dictionary dumped to redo logs ends in this redo log (YES) or not (NO)
TYPE	VARCHAR2(7)	Redo log file type: ARCHIVED ONLINE
BLOCKSIZE	NUMBER	Database block size
FILESIZE	NUMBER	Size of the redo file (in bytes)
INFO	VARCHAR2(32)	Informational message. A value of MISSING_LOGFILE will be assigned to a row entry where a needed log file is missing from the list of log files.
STATUS	NUMBER	Status of the redo log file: 0 - Will be read 1 - First to be read 2 - Not needed 4 - Missing log file

v$tablespace

Column	Datatype	Description
TS#	NUMBER	Tablespace number
NAME	VARCHAR2(30)	Tablespace name
INCLUDED_IN_DATABASE_BACKUP	VARCHAR2(3)	Indicates whether the tablespace is included in full database backups using the BACKUP DATABASE RMAN command (YES) or not (NO); NO only if the CONFIGURE EXCLUDE RMAN command was used for this tablespace
BIGFILE	VARCHAR2(3)	Indicates whether the tablespace is a bigfile tablespace (YES) or a smallfile tablespace (NO)
FLASHBACK_ON	VARCHAR2(3)	Indicates whether the tablespace participates in FLASHBACK DATABASE operations (YES) or not (NO)
ENCRYPT_IN_BACKUP	VARCHAR2(3)	Indicates whether encryption is turned ON or off at the tablespace level: ON - Encryption is turned ON at the tablespace level OFF - Encryption is turned OFF at the tablespace level NULL - Encryption is neither explicitly turned on nor off at the tablespace level (default or when cleared)

v$tempfile

Column	Datatype	Description
FILE#	NUMBER	Absolute file number
CREATION_CHANGE#	NUMBER	Creation System Change Number (SCN)
CREATION_TIME	DATE	Creation time
TS#	NUMBER	Tablespace number
RFILE#	NUMBER	Relative file number in the tablespace
STATUS	VARCHAR2(7)	Status of the file (OFFLINE\|ONLINE)
ENABLED	VARCHAR2(10)	Enabled for read and/or write
BYTES	NUMBER	Size of the file in bytes (from the file header)
BLOCKS	NUMBER	Size of the file in blocks (from the file header)
CREATE_BYTES	NUMBER	Creation size of the file (in bytes)
BLOCK_SIZE	NUMBER	Block size for the file
NAME	VARCHAR2(513)	Name of the file

v$filestat

Column	Datatype	Description
FILE#	NUMBER	Number of the file
PHYRDS	NUMBER	Number of physical reads done
PHYWRTS	NUMBER	Number of times DBWR is required to write
PHYBLKRD	NUMBER	Number of physical blocks read
OPTIMIZED_PHYBLKRD	NUMBER	Number of physical reads from Database Smart Flash Cache blocks
PHYBLKWRT	NUMBER	Number of blocks written to disk, which may be the same as PHYWRTS if all writes are single blocks
SINGLEBLKRDS	NUMBER	Number of single block reads
READTIM	NUMBER	Time (in hundredths of a second) spent doing reads if the TIMED_STATISTICS parameter is true; 0 if false
WRITETIM	NUMBER	Time (in hundredths of a second) spent doing writes if the TIMED_STATISTICS parameter is true; 0 if false
SINGLEBLKRDTIM	NUMBER	Cumulative single block read time (in hundredths of a second)
AVGIOTIM	NUMBER	Average time (in hundredths of a second) spent on I/O, if the TIMED_STATISTICS parameter is true; 0 if false
LSTIOTIM	NUMBER	Time (in hundredths of a second) spent doing the last I/O, if the TIMED_STATISTICS parameter is true; 0 if false
MINIOTIM	NUMBER	Minimum time (in hundredths of a second) spent on a single I/O, if the TIMED_STATISTICS parameter is true; 0 if false
MAXIORTM	NUMBER	Maximum time (in hundredths of a second) spent doing a single read, if the TIMED_STATISTICS parameter is true; 0 if false
MAXIOWTM	NUMBER	Maximum time (in hundredths of a second) spent doing a single write, if the TIMED_STATISTICS parameter is true; 0 if false

v$undostat

Column	Datatype	Description
BEGIN_TIME	DATE	Identifies the beginning of the time interval
END_TIME	DATE	Identifies the end of the time interval
UNDOTSN	NUMBER	Represents the last active undo tablespace in the duration of time. The tablespace ID of the active undo tablespace is returned in this column. If more than one undo tablespace was active in that period, the active undo tablespace that was active at the end of the period is reported.
UNDOBLKS	NUMBER	Represents the total number of undo blocks consumed. You can use this column to obtain the consumption rate of undo blocks, and thereby estimate the size of the undo tablespace needed to handle the workload on your system.
TXNCOUNT	NUMBER	Identifies the total number of transactions executed within the period
MAXQUERYLEN	NUMBER	Identifies the length of the longest query (in seconds) executed in the instance during the period. You can use this statistic to estimate the proper setting of the UNDO_RETENTION initialization parameter. The length of a query is measured from the cursor open time to the last fetch/execute time of the cursor. Only the length of those cursors that have been fetched/executed during the period are reflected in the view.
MAXQUERYID	VARCHAR2(13)	SQL identifier of the longest running SQL statement in the period
MAXCONCURRENCY	NUMBER	Identifies the highest number of transactions executed concurrently within the period
UNXPSTEALCNT	NUMBER	Number of attempts to obtain undo space by stealing unexpired extents from other transactions
UNXPBLKRELCNT	NUMBER	Number of unexpired blocks removed from certain undo segments so they can be used by other transactions
UNXPBLKREUCNT	NUMBER	Number of unexpired undo blocks reused by transactions
EXPSTEALCNT	NUMBER	Number of attempts to steal expired undo blocks from other undo segments
EXPBLKRELCNT	NUMBER	Number of expired undo blocks stolen from other undo segments
EXPBLKREUCNT	NUMBER	Number of expired undo blocks reused within the same undo segments
SSOLDERRCNT	NUMBER	Identifies the number of times the error occurred. You can use this statistic to decide whether or not the UNDO_RETENTION initialization parameter is set properly given the size of the undo tablespace. Increasing the value of UNDO_RETENTION can reduce the occurrence of this error.
NOSPACEERRCNT	NUMBER	Identifies the number of times space was requested in the undo tablespace and there was no free space available. That is, all of the space in the undo tablespace was in use by active transactions. The corrective action is to add more space to the undo tablespace.
ACTIVEBLKS	NUMBER	Total number of blocks in the active extents of the undo tablespace for the instance at the sampled time in the period
UNEXPIREDBLKS	NUMBER	Total number of blocks in the unexpired extents of the undo tablespace for the instance at the sampled time in the period
EXPIREDBLKS	NUMBER	Total number of blocks in the expired extents of the undo tablespace for the instance at the sampled time in the period
TUNED_UNDORETENTION	NUMBER	Amount of time (in seconds) for which undo will not be recycled from the time it was committed. At any point in time, the latest value of TUNED_UNDORETENTION is used to determine whether data committed at a particular time in the past can be recycled.

v$rollname

Column	Datatype	NULL
USN	NUMBER
NAME	VARCHAR2(30)	NOT NULL

v$session

Column	Datatype	Description
SADDR	RAW(4 \| 8)	Session address
SID	NUMBER	Session identifier
SERIAL#	NUMBER	Session serial number. Used to uniquely identify a session's objects. Guarantees that session-level commands are applied to the correct session objects if the session ends and another session begins with the same session ID.
AUDSID	NUMBER	Auditing session ID
PADDR	RAW(4 \| 8)	Address of the process that owns the session
USER#	NUMBER	Oracle user identifier
USERNAME	VARCHAR2(30)	Oracle username
COMMAND	NUMBER	Command in progress (last statement parsed); for a list of values, see . These values also appear in the AUDIT_ACTIONS table.
OWNERID	NUMBER	Identifier of the user who owns the migratable session; the column contents are invalid if the value is 2147483644 For operations using Parallel Slaves, interpret this value as a 4-byte value. The low-order 2 bytes represent the session number and the high-order bytes represent the instance ID of the query coordinator.
TADDR	VARCHAR2(8)	Address of the transaction state object
LOCKWAIT	VARCHAR2(8)	Address of the lock the session is waiting for; NULL if none
STATUS	VARCHAR2(8)	Status of the session: ACTIVE - Session currently executing SQL INACTIVE - Session which is inactive and either has no configured limits or has not yet exceeded the configured limits KILLED - Session marked to be killed CACHED - Session temporarily cached for use by Oracle*XA SNIPED - An inactive session that has exceeded some configured limits (for example, resource limits specified for the resource manager consumer group or idle_time specified in the user's profile). Such sessions will not be allowed to become active again.
SERVER	VARCHAR2(9)	Server type: DEDICATED SHARED PSEUDO POOLED NONE
SCHEMA#	NUMBER	Schema user identifier
SCHEMANAME	VARCHAR2(30)	Schema user name
OSUSER	VARCHAR2(30)	Operating system client user name
PROCESS	VARCHAR2(24)	Operating system client process ID
MACHINE	VARCHAR2(64)	Operating system machine name
PORT	NUMBER	Client port number
TERMINAL	VARCHAR2(30)	Operating system terminal name
PROGRAM	VARCHAR2(48)	Operating system program name
TYPE	VARCHAR2(10)	Session type
SQL_ADDRESS	RAW(4 \| 8)	Used with SQL_HASH_VALUE to identify the SQL statement that is currently being executed
SQL_HASH_VALUE	NUMBER	Used with SQL_ADDRESS to identify the SQL statement that is currently being executed
SQL_ID	VARCHAR2(13)	SQL identifier of the SQL statement that is currently being executed
SQL_CHILD_NUMBER	NUMBER	Child number of the SQL statement that is currently being executed
SQL_EXEC_START	DATE	Time when the execution of the SQL currently executed by this session started; NULL if SQL_ID is NULL
SQL_EXEC_ID	NUMBER	SQL execution identifier; NULL if SQL_ID is NULL or if the execution of that SQL has not yet started (see V$SQL_MONITOR)
PREV_SQL_ADDR	RAW(4 \| 8)	Used with PREV_HASH_VALUE to identify the last SQL statement executed
PREV_HASH_VALUE	NUMBER	Used with SQL_HASH_VALUE to identify the last SQL statement executed
PREV_SQL_ID	VARCHAR2(13)	SQL identifier of the last SQL statement executed
PREV_CHILD_NUMBER	NUMBER	Child number of the last SQL statement executed
PREV_EXEC_START	DATE	SQL execution start of the last executed SQL statement
PREV_EXEC_ID	NUMBER	SQL execution identifier of the last executed SQL statement
PLSQL_ENTRY_OBJECT_ID	NUMBER	Object ID of the top-most PL/SQL subprogram on the stack; NULL if there is no PL/SQL subprogram on the stack
PLSQL_ENTRY_SUBPROGRAM_ID	NUMBER	Subprogram ID of the top-most PL/SQL subprogram on the stack; NULL if there is no PL/SQL subprogram on the stack
PLSQL_OBJECT_ID	NUMBER	Object ID of the currently executing PL/SQL subprogram; NULL if executing SQL
PLSQL_SUBPROGRAM_ID	NUMBER	Subprogram ID of the currently executing PL/SQL object; NULL if executing SQL
MODULE	VARCHAR2(48)	Name of the currently executing module as set by calling the DBMS_APPLICATION_INFO.SET_MODULE procedure
MODULE_HASH	NUMBER	Hash value of the MODULE column
ACTION	VARCHAR2(32)	Name of the currently executing action as set by calling the DBMS_APPLICATION_INFO.SET_ACTION procedure
ACTION_HASH	NUMBER	Hash value of the ACTION column
CLIENT_INFO	VARCHAR2(64)	Information set by the DBMS_APPLICATION_INFO.SET_CLIENT_INFO procedure
FIXED_TABLE_SEQUENCE	NUMBER	This contains a number that increases every time the session completes a call to the database and there has been an intervening select from a dynamic performance table. This column can be used by performance monitors to monitor statistics in the database. Each time the performance monitor looks at the database, it only needs to look at sessions that are currently active or have a higher value in this column than the highest value that the performance monitor saw the last time. All the other sessions have been idle since the last time the performance monitor looked at the database.
ROW_WAIT_OBJ#	NUMBER	Object ID for the table containing the row specified in ROW_WAIT_ROW#
ROW_WAIT_FILE#	NUMBER	Identifier for the datafile containing the row specified in ROW_WAIT_ROW#. This column is valid only if the session is currently waiting for another transaction to commit and the value of ROW_WAIT_OBJ# is not -1.
ROW_WAIT_BLOCK#	NUMBER	Identifier for the block containing the row specified in ROW_WAIT_ROW#. This column is valid only if the session is currently waiting for another transaction to commit and the value of ROW_WAIT_OBJ# is not -1.
ROW_WAIT_ROW#	NUMBER	Current row being locked. This column is valid only if the session is currently waiting for another transaction to commit and the value of ROW_WAIT_OBJ# is not -1.
TOP_LEVEL_CALL#	NUMBER	Oracle top level call number
LOGON_TIME	DATE	Time of logon
LAST_CALL_ET	NUMBER	If the session STATUS is currently ACTIVE, then the value represents the elapsed time (in seconds) since the session has become active. If the session STATUS is currently INACTIVE, then the value represents the elapsed time (in seconds) since the session has become inactive.
PDML_ENABLED	VARCHAR2(3)	This column has been replaced by the PDML_STATUS column
FAILOVER_TYPE	VARCHAR2(13)	Indicates whether and to what extent transparent application failover (TAF) is enabled for the session: NONE - Failover is disabled for this session SESSION - Client is able to fail over its session following a disconnect SELECT - Client is able to fail over queries in progress as well See Also: for more information on TAF for information on configuring TAF
FAILOVER_METHOD	VARCHAR2(10)	Indicates the transparent application failover method for the session: NONE - Failover is disabled for this session BASIC - Client itself reconnects following a disconnect PRECONNECT - Backup instance can support all connections from every instance for which it is backed up
FAILED_OVER	VARCHAR2(3)	Indicates whether the session is running in failover mode and failover has occurred (YES) or not (NO)
RESOURCE_CONSUMER_GROUP	VARCHAR2(32)	Name of the session's current resource consumer group
PDML_STATUS	VARCHAR2(8)	If ENABLED, the session is in a PARALLEL DML enabled mode. If DISABLED, PARALLEL DML enabled mode is not supported for the session. If FORCED, the session has been altered to force PARALLEL DML.
PDDL_STATUS	VARCHAR2(8)	If ENABLED, the session is in a PARALLEL DDL enabled mode. If DISABLED, PARALLEL DDL enabled mode is not supported for the session. If FORCED, the session has been altered to force PARALLEL DDL.
PQ_STATUS	VARCHAR2(8)	If ENABLED, the session is in a PARALLEL QUERY enabled mode. If DISABLED, PARALLEL QUERY enabled mode is not supported for the session. If FORCED, the session has been altered to force PARALLEL QUERY.
CURRENT_QUEUE_DURATION	NUMBER	If queued (1), the current amount of time the session has been queued. If not currently queued, the value is 0.
CLIENT_IDENTIFIER	VARCHAR2(64)	Client identifier of the session
BLOCKING_SESSION_STATUS	VARCHAR2(11)	This column provides details on whether there is a blocking session: VALID - there is a blocking session, and it is identified in the BLOCKING_INSTANCE and BLOCKING_SESSION columns NO HOLDER - there is no session blocking this session NOT IN WAIT - this session is not in a wait UNKNOWN - the blocking session is unknown
BLOCKING_INSTANCE	NUMBER	Instance identifier of the blocking session. This column is valid only if BLOCKING_SESSION_STATUS has the value VALID.
BLOCKING_SESSION	NUMBER	Session identifier of the blocking session. This column is valid only if BLOCKING_SESSION_STATUS has the value VALID.
FINAL_BLOCKING_SESSION_STATUS	VARCHAR2(11)	The final blocking session is the final element in the wait chain constructed by following the sessions that are blocked by one another starting with this session. In the case of a cyclical wait chain, one of the sessions in the wait chain will be chosen as the final blocker. This column provides details on whether there is a final blocking session: VALID - there is a final blocking session and it is identified in the FINAL_BLOCKING_INSTANCE and FINAL_BLOCKING_SESSION columns NO HOLDER - there is no session blocking this session NOT IN WAIT - this session is not in a wait UNKNOWN - the final blocking session is unknown
FINAL_BLOCKING_INSTANCE	NUMBER	Instance identifier of the final blocking session. This column is valid only if FINAL_BLOCKING_SESSION_STATUS has the value VALID.
FINAL_BLOCKING_SESSION	NUMBER	Session identifier of the blocking session. This column is valid only if FINAL_BLOCKING_SESSION_STATUS has the value VALID.
SEQ#	NUMBER	A number that uniquely identifies the current or last wait (incremented for each wait)
EVENT#	NUMBER	Event number
EVENT	VARCHAR2(64)	Resource or event for which the session is waiting See Also:
P1TEXT	VARCHAR2(64)	Description of the first wait event parameter
P1	NUMBER	First wait event parameter (in decimal)
P1RAW	RAW(8)	First wait event parameter (in hexadecimal)
P2TEXT	VARCHAR2(64)	Description of the second wait event parameter
P2	NUMBER	Second wait event parameter (in decimal)
P2RAW	RAW(8)	Second wait event parameter (in hexadecimal)
P3TEXT	VARCHAR2(64)	Description of the third wait event parameter
P3	NUMBER	Third wait event parameter (in decimal)
P3RAW	RAW(8)	Third wait event parameter (in hexadecimal)
WAIT_CLASS_ID	NUMBER	Identifier of the class of the wait event
WAIT_CLASS#	NUMBER	Number of the class of the wait event
WAIT_CLASS	VARCHAR2(64)	Name of the class of the wait event
WAIT_TIME	NUMBER	If the session is currently waiting, then the value is 0. If the session is not in a wait, then the value is as follows: > 0 - Value is the duration of the last wait in hundredths of a second -1 - Duration of the last wait was less than a hundredth of a second -2 - Parameter TIMED_STATISTICS was set to false This column has been deprecated in favor of the columns WAIT_TIME_MICRO and STATE.
SECONDS_IN_WAIT	NUMBER	If the session is currently waiting, then the value is the amount of time waited for the current wait. If the session is not in a wait, then the value is the amount of time since the start of the last wait. This column has been deprecated in favor of the columns WAIT_TIME_MICRO and TIME_SINCE_LAST_WAIT_MICRO.
STATE	VARCHAR2(19)	Wait state: WAITING - Session is currently waiting WAITED UNKNOWN TIME - Duration of the last wait is unknown; this is the value when the parameter TIMED_STATISTICS is set to false WAITED SHORT TIME - Last wait was less than a hundredth of a second WAITED KNOWN TIME - Duration of the last wait is specified in the WAIT_TIME column
WAIT_TIME_MICRO	NUMBER	Amount of time waited (in microseconds). If the session is currently waiting, then the value is the time spent in the current wait. If the session is currently not in a wait, then the value is the amount of time waited in the last wait.
TIME_REMAINING_MICRO	NUMBER	Value is interpreted as follows: > 0 - Amount of time remaining for the current wait (in microseconds) 0 - Current wait has timed out -1 - Session can indefinitely wait in the current wait NULL - Session is not currently waiting
TIME_SINCE_LAST_WAIT_MICRO	NUMBER	Time elapsed since the end of the last wait (in microseconds). If the session is currently in a wait, then the value is 0.
SERVICE_NAME	VARCHAR2(64)	Service name of the session
SQL_TRACE	VARCHAR2(8)	Indicates whether SQL tracing is enabled (ENABLED) or disabled (DISABLED)
SQL_TRACE_WAITS	VARCHAR2(5)	Indicates whether wait tracing is enabled (TRUE) or not (FALSE)
SQL_TRACE_BINDS	VARCHAR2(5)	Indicates whether bind tracing is enabled (TRUE) or not (FALSE)
SQL_TRACE_PLAN_STATS	VARCHAR2(10)	Frequency at which row source statistics are dumped in the trace files for each cursor: never first_execution all_executions
SESSION_EDITION_ID	NUMBER	Shows the value that, in the session, would be reported by sys_context('USERENV', 'SESSION_EDITION_ID')
CREATOR_ADDR	RAW(4 \| 8)	Address of the creating process or circuit
CREATOR_SERIAL#	NUMBER	Serial number of the creating process or circuit
ECID	VARCHAR2(64)	Execution context identifier (sent by Application Server)

v$transaction

Column	Datatype	Description
ADDR	RAW(4 \| 8)	Address of the transaction state object
XIDUSN	NUMBER	Undo segment number
XIDSLOT	NUMBER	Slot number
XIDSQN	NUMBER	Sequence number
UBAFIL	NUMBER	Undo block address (UBA) filenum
UBABLK	NUMBER	UBA block number
UBASQN	NUMBER	UBA sequence number
UBAREC	NUMBER	UBA record number
STATUS	VARCHAR2(16)	Status
START_TIME	VARCHAR2(20)	Start time (wall clock)
START_SCNB	NUMBER	Start system change number (SCN) base
START_SCNW	NUMBER	Start SCN wrap
START_UEXT	NUMBER	Start extent number
START_UBAFIL	NUMBER	Start UBA file number
START_UBABLK	NUMBER	Start UBA block number
START_UBASQN	NUMBER	Start UBA sequence number
START_UBAREC	NUMBER	Start UBA record number
SES_ADDR	RAW(4 \| 8)	User session object address
FLAG	NUMBER	Flag
SPACE	VARCHAR2(3)	YES if a space transaction
RECURSIVE	VARCHAR2(3)	YES if a recursive transaction
NOUNDO	VARCHAR2(3)	YES if a no undo transaction
PTX	VARCHAR2(3)	YES if parallel transaction
NAME	VARCHAR2(256)	Name of a named transaction
PRV_XIDUSN	NUMBER	Previous transaction undo segment number
PRV_XIDSLT	NUMBER	Previous transaction slot number
PRV_XIDSQN	NUMBER	Previous transaction sequence number
PTX_XIDUSN	NUMBER	Rollback segment number of the parent XID
PTX_XIDSLT	NUMBER	Slot number of the parent XID
PTX_XIDSQN	NUMBER	Sequence number of the parent XID
DSCN-B	NUMBER	This column is obsolete and maintained for backward compatibility. The value of this column is always equal to the value in DSCN_BASE.
DSCN-W	NUMBER	This column is obsolete and maintained for backward compatibility. The value of this column is always equal to the value in DSCN_WRAP.
USED_UBLK	NUMBER	Number of undo blocks used
USED_UREC	NUMBER	Number of undo records used
LOG_IO	NUMBER	Logical I/O
PHY_IO	NUMBER	Physical I/O
CR_GET	NUMBER	Consistent gets
CR_CHANGE	NUMBER	Consistent changes
START_DATE	DATE	Start time (wall clock)
DSCN_BASE	NUMBER	Dependent SCN base
DSCN_WRAP	NUMBER	Dependent SCN wrap
START_SCN	NUMBER	Start SCN
DEPENDENT_SCN	NUMBER	Dependent SCN
XID	RAW(8)	Transaction XID
PRV_XID	RAW(8)	Previous transaction XID
PTX_XID	RAW(8)	Parent transaction XID

v$rollstat

Column	Datatype	Description
USN	NUMBER	Rollback segment number
LATCH	NUMBER	Latch for the rollback segment
EXTENTS	NUMBER	Number of extents in the rollback segment
RSSIZE	NUMBER	Size (in bytes) of the rollback segment. This value differs by the number of bytes in one database block from the value of the BYTES column of the _SEGMENTS view. See Also:*
WRITES	NUMBER	Number of bytes written to the rollback segment
XACTS	NUMBER	Number of active transactions
GETS	NUMBER	Number of header gets
WAITS	NUMBER	Number of header waits
OPTSIZE	NUMBER	Optimal size of the rollback segment
HWMSIZE	NUMBER	High watermark of the rollback segment size
SHRINKS	NUMBER	Number of times the size of a rollback segment decreases
WRAPS	NUMBER	Number of times rollback segment is wrapped
EXTENDS	NUMBER	Number of times rollback segment size is extended
AVESHRINK	NUMBER	Average shrink size
AVEACTIVE	NUMBER	Current size of active extents, averaged over time.
STATUS	VARCHAR2(15)	Rollback segment status: ONLINE PENDING OFFLINE OFFLINE FULL
CUREXT	NUMBER	Current extent
CURBLK	NUMBER	Current block

v$pwfile_users

Column	Datatype	Description
USERNAME	VARCHAR2(30)	Name of the user that is contained in the password file
SYSDBA	VARCHAR2(5)	Indicates whether the user can connect with SYSDBA privileges (TRUE) or not (FALSE)
SYSOPER	VARCHAR2(5)	Indicates whether the user can connect with SYSOPER privileges (TRUE) or not (FALSE)
SYSASM	VARCHAR2(5)	Indicates whether the user can connect with SYSASM privileges (TRUE) or not (FALSE)

v$sqlarea

Column	Datatype	Description
SQL_TEXT	VARCHAR2(1000)	First thousand characters of the SQL text for the current cursor
SQL_FULLTEXT	CLOB	All characters of the SQL text for the current cursor
SQL_ID	VARCHAR2(13)	SQL identifier of the parent cursor in the library cache
SHARABLE_MEM	NUMBER	Amount of shared memory used by a cursor. If multiple child cursors exist, then the sum of all shared memory used by all child cursors.
PERSISTENT_MEM	NUMBER	Fixed amount of memory used for the lifetime of an open cursor. If multiple child cursors exist, then the fixed sum of memory used for the lifetime of all the child cursors.
RUNTIME_MEM	NUMBER	Fixed amount of memory required during execution of a cursor. If multiple child cursors exist, then the fixed sum of all memory required during execution of all the child cursors.
SORTS	NUMBER	Sum of the number of sorts that were done for all the child cursors
VERSION_COUNT	NUMBER	Number of child cursors that are present in the cache under this parent
LOADED_VERSIONS	NUMBER	Number of child cursors that are present in the cache and have their context heap loaded
OPEN_VERSIONS	NUMBER	Number of child cursors that are currently open under this current parent
USERS_OPENING	NUMBER	Number of users that have any of the child cursors open
FETCHES	NUMBER	Number of fetches associated with the SQL statement
EXECUTIONS	NUMBER	Total number of executions, totalled over all the child cursors
PX_SERVERS_EXECUTIONS	NUMBER	Total number of executions performed by parallel execution servers (0 when the statement has never been executed in parallel)
END_OF_FETCH_COUNT	NUMBER	Number of times this cursor was fully executed since the cursor was brought into the library cache. The value of this statistic is not incremented when the cursor is partially executed, either because it failed during the execution or because only the first few rows produced by this cursor are fetched before the cursor is closed or re-executed. By definition, the value of the END_OF_FETCH_COUNT column should be less or equal to the value of the EXECUTIONS column.
USERS_EXECUTING	NUMBER	Total number of users executing the statement over all child cursors
LOADS	NUMBER	Number of times the object was loaded or reloaded
FIRST_LOAD_TIME	VARCHAR2(19)	Timestamp of the parent creation time
INVALIDATIONS	NUMBER	Total number of invalidations over all the child cursors
PARSE_CALLS	NUMBER	Sum of all parse calls to all the child cursors under this parent
DISK_READS	NUMBER	Sum of the number of disk reads over all child cursors
DIRECT_WRITES	NUMBER	Sum of the number of direct writes over all child cursors
BUFFER_GETS	NUMBER	Sum of buffer gets over all child cursors
APPLICATION_WAIT_TIME	NUMBER	Application wait time (in microseconds)
CONCURRENCY_WAIT_TIME	NUMBER	Concurrency wait time (in microseconds)
CLUSTER_WAIT_TIME	NUMBER	Cluster wait time (in microseconds)
USER_IO_WAIT_TIME	NUMBER	User I/O Wait Time (in microseconds)
PLSQL_EXEC_TIME	NUMBER	PL/SQL execution time (in microseconds)
JAVA_EXEC_TIME	NUMBER	Java execution time (in microseconds)
ROWS_PROCESSED	NUMBER	Total number of rows processed on behalf of this SQL statement
COMMAND_TYPE	NUMBER	Oracle command type definition
OPTIMIZER_MODE	VARCHAR2(10)	Mode under which the SQL statement was executed
OPTIMIZER_COST	NUMBER	Cost of this query given by the optimizer
OPTIMIZER_ENV	RAW(2000)	Optimizer environment
OPTIMIZER_ENV_HASH_VALUE	NUMBER	Hash value for the optimizer environment
PARSING_USER_ID	NUMBER	User ID of the user that has parsed the very first cursor under this parent
PARSING_SCHEMA_ID	NUMBER	Schema ID that was used to parse this child cursor
PARSING_SCHEMA_NAME	VARCHAR2(30)	Schema name that was used to parse this child cursor
KEPT_VERSIONS	NUMBER	Number of child cursors that have been marked to be kept using the DBMS_SHARED_POOL package
ADDRESS	RAW(4 \| 8)	Address of the handle to the parent for this cursor
HASH_VALUE	NUMBER	Hash value of the parent statement in the library cache
OLD_HASH_VALUE	NUMBER	Old SQL hash value
PLAN_HASH_VALUE	NUMBER	Numeric representation of the SQL plan for this cursor. Comparing one PLAN_HASH_VALUE to another easily identifies whether or not two plans are the same (rather than comparing the two plans line by line).
MODULE	VARCHAR2(64)	Contains the name of the module that was executing at the time that the SQL statement was first parsed as set by calling DBMS_APPLICATION_INFO.SET_MODULE
MODULE_HASH	NUMBER	Hash value of the module that is named in the MODULE column
ACTION	VARCHAR2(64)	Contains the name of the action that was executing at the time that the SQL statement was first parsed as set by calling DBMS_APPLICATION_INFO.SET_ACTION
ACTION_HASH	NUMBER	Hash value of the action that is named in the ACTION column
SERIALIZABLE_ABORTS	NUMBER	Number of times the transaction failed to serialize, producing errors, totalled over all the child cursors
OUTLINE_CATEGORY	VARCHAR2(64)	If an outline was applied during construction of the cursor, then this column displays the category of that outline. Otherwise the column is left blank.
CPU_TIME	NUMBER	CPU time (in microseconds) used by this cursor for parsing, executing, and fetching
ELAPSED_TIME	NUMBER	Elapsed time (in microseconds) used by this cursor for parsing, executing, and fetching
OUTLINE_SID	VARCHAR2(40)	Outline session identifier
LAST_ACTIVE_CHILD_ADDRESS	RAW(4 \| 8)	Address (identifier) of the child cursor that was the last to be active in the group (that is, the child cursor on behalf of which statistics in V$SQL were updated)
REMOTE	VARCHAR2(1)	Indicates whether the cursor is remote mapped (Y) or not (N)
OBJECT_STATUS	VARCHAR2(19)	Status of the cursor: VALID - Valid, authorized without errors VALID_AUTH_ERROR - Valid, authorized with authorization errors VALID_COMPILE_ERROR - Valid, authorized with compilation errors VALID_UNAUTH - Valid, unauthorized INVALID_UNAUTH - Invalid, unauthorized INVALID - Invalid, unauthorized but keep the timestamp
LITERAL_HASH_VALUE	NUMBER	Hash value of the literals which are replaced with system-generated bind variables and are to be matched, when CURSOR_SHARING is used. This is not the hash value for the SQL statement. If CURSOR_SHARING is not used, then the value is 0.
LAST_LOAD_TIME	DATE	Time at which the query plan was loaded into the library cache
IS_OBSOLETE	VARCHAR2(1)	Indicates whether the cursor has become obsolete (Y) or not (N). This can happen if the number of child cursors is too large.
IS_BIND_SENSITIVE	VARCHAR2(1)	Indicates whether the cursor is bind sensitive (Y) or not (N). A query is considered bind-sensitive if the optimizer peeked at one of its bind variable values when computing predicate selectivities and where a change in a bind variable value may cause the optimizer to generate a different plan.
IS_BIND_AWARE	VARCHAR2(1)	Indicates whether the cursor is bind aware (Y) or not (N). A query is considered bind-aware if it has been marked to use extended cursor sharing. The query would already have been marked as bind-sensitive.
CHILD_LATCH	NUMBER	Child latch number that is protecting the cursor. This column is obsolete and maintained for backward compatibility.
SQL_PROFILE	VARCHAR2(64)	SQL profile used for this statement, if any
SQL_PATCH	VARCHAR2(30)	SQL patch used for this statement, if any
SQL_PLAN_BASELINE	VARCHAR2(30)	SQL plan baseline used for this statement, if any
PROGRAM_ID	NUMBER	Program identifier
PROGRAM_LINE#	NUMBER	Program line number
EXACT_MATCHING_SIGNATURE	NUMBER	Signature used when the CURSOR_SHARING parameter is set to EXACT
FORCE_MATCHING_SIGNATURE	NUMBER	Signature used when the CURSOR_SHARING parameter is set to FORCE
LAST_ACTIVE_TIME	DATE	Time at which the query plan was last active
BIND_DATA	RAW(2000)	Bind data
TYPECHECK_MEM	NUMBER	Typecheck memory
IO_CELL_OFFLOAD_ELIGIBLE_BYTES	NUMBER	Number of I/O bytes which can be filtered by the Exadata storage system See Also: Oracle Exadata Storage Server Software documentation for more information
IO_INTERCONNECT_BYTES	NUMBER	Number of I/O bytes exchanged between Oracle Database and the storage system
PHYSICAL_READ_REQUESTS	NUMBER	Number of physical read I/O requests issued by the monitored SQL
PHYSICAL_READ_BYTES	NUMBER	Number of bytes read from disks by the monitored SQL
PHYSICAL_WRITE_REQUESTS	NUMBER	Number of physical write I/O requests issued by the monitored SQL
PHYSICAL_WRITE_BYTES	NUMBER	Number of bytes written to disks by the monitored SQL
OPTIMIZED_PHY_READ_REQUESTS	NUMBER	Number of physical read I/O requests from Database Smart Flash Cache issued by the monitored SQL
LOCKED_TOTAL	NUMBER	Total number of times the child cursor has been locked
PINNED_TOTAL	NUMBER	Total number of times the child cursor has been pinned
IO_CELL_UNCOMPRESSED_BYTES	NUMBER	Number of uncompressed bytes (that is, size after decompression) that are offloaded to the Exadata cells See Also: Oracle Exadata Storage Server Software documentation for more information
IO_CELL_OFFLOAD_RETURNED_BYTES	NUMBER	Number of bytes that are returned by Exadata cell through the regular I/O path See Also: Oracle Exadata Storage Server Software documentation for more information

v$sql

Column	Datatype	Description
SQL_TEXT	VARCHAR2(1000)	First thousand characters of the SQL text for the current cursor
SQL_FULLTEXT	CLOB	Full text for the SQL statement exposed as a CLOB column. The full text of a SQL statement can be retrieved using this column instead of joining with the V$SQLTEXT dynamic performance view.
SQL_ID	VARCHAR2(13)	SQL identifier of the parent cursor in the library cache
SHARABLE_MEM	NUMBER	Amount of shared memory used by the child cursor (in bytes)
PERSISTENT_MEM	NUMBER	Fixed amount of memory used for the lifetime of the child cursor (in bytes)
RUNTIME_MEM	NUMBER	Fixed amount of memory required during the execution of the child cursor
SORTS	NUMBER	Number of sorts that were done for the child cursor
LOADED_VERSIONS	NUMBER	Indicates whether the context heap is loaded (1) or not (0)
OPEN_VERSIONS	NUMBER	Indicates whether the child cursor is locked (1) or not (0)
USERS_OPENING	NUMBER	Number of users executing the statement
FETCHES	NUMBER	Number of fetches associated with the SQL statement
EXECUTIONS	NUMBER	Number of executions that took place on this object since it was brought into the library cache
PX_SERVERS_EXECUTIONS	NUMBER	Total number of executions performed by parallel execution servers (0 when the statement has never been executed in parallel)
END_OF_FETCH_COUNT	NUMBER	Number of times this cursor was fully executed since the cursor was brought into the library cache. The value of this statistic is not incremented when the cursor is partially executed, either because it failed during the execution or because only the first few rows produced by this cursor are fetched before the cursor is closed or re-executed. By definition, the value of the END_OF_FETCH_COUNT column should be less or equal to the value of the EXECUTIONS column.
USERS_EXECUTING	NUMBER	Number of users executing the statement
LOADS	NUMBER	Number of times the object was either loaded or reloaded
FIRST_LOAD_TIME	VARCHAR2(19)	Timestamp of the parent creation time
INVALIDATIONS	NUMBER	Number of times this child cursor has been invalidated
PARSE_CALLS	NUMBER	Number of parse calls for this child cursor
DISK_READS	NUMBER	Number of disk reads for this child cursor
DIRECT_WRITES	NUMBER	Number of direct writes for this child cursor
BUFFER_GETS	NUMBER	Number of buffer gets for this child cursor
APPLICATION_WAIT_TIME	NUMBER	Application wait time (in microseconds)
CONCURRENCY_WAIT_TIME	NUMBER	Concurrency wait time (in microseconds)
CLUSTER_WAIT_TIME	NUMBER	Cluster wait time (in microseconds)
USER_IO_WAIT_TIME	NUMBER	User I/O Wait Time (in microseconds)
PLSQL_EXEC_TIME	NUMBER	PL/SQL execution time (in microseconds)
JAVA_EXEC_TIME	NUMBER	Java execution time (in microseconds)
ROWS_PROCESSED	NUMBER	Total number of rows the parsed SQL statement returns
COMMAND_TYPE	NUMBER	Oracle command type definition
OPTIMIZER_MODE	VARCHAR2(10)	Mode under which the SQL statement was executed
OPTIMIZER_COST	NUMBER	Cost of this query given by the optimizer
OPTIMIZER_ENV	RAW(2000)	Optimizer environment
OPTIMIZER_ENV_HASH_VALUE	NUMBER	Hash value for the optimizer environment
PARSING_USER_ID	NUMBER	User ID of the user who originally built this child cursor
PARSING_SCHEMA_ID	NUMBER	Schema ID that was used to originally build this child cursor
PARSING_SCHEMA_NAME	VARCHAR2(30)	Schema name that was used to originally build this child cursor
KEPT_VERSIONS	NUMBER	Indicates whether this child cursor has been marked to be kept pinned in the cache using the DBMS_SHARED_POOL package
ADDRESS	RAW(4 \| 8)	Address of the handle to the parent for this cursor
TYPE_CHK_HEAP	RAW(4)	Descriptor of the type check heap for this child cursor
HASH_VALUE	NUMBER	Hash value of the parent statement in the library cache
OLD_HASH_VALUE	NUMBER	Old SQL hash value
PLAN_HASH_VALUE	NUMBER	Numeric representation of the SQL plan for this cursor. Comparing one PLAN_HASH_VALUE to another easily identifies whether or not two plans are the same (rather than comparing the two plans line by line).
CHILD_NUMBER	NUMBER	Number of this child cursor
SERVICE	VARCHAR2(64)	Service name
SERVICE_HASH	NUMBER	Hash value for the name listed in the SERVICEcolumn
MODULE	VARCHAR2(64)	Contains the name of the module that was executing at the time that the SQL statement was first parsed, which is set by calling DBMS_APPLICATION_INFO.SET_MODULE
MODULE_HASH	NUMBER	Hash value of the module listed in the MODULE column
ACTION	VARCHAR2(64)	Contains the name of the action that was executing at the time that the SQL statement was first parsed, which is set by calling DBMS_APPLICATION_INFO.SET_ACTION
ACTION_HASH	NUMBER	Hash value of the action listed in the ACTION column
SERIALIZABLE_ABORTS	NUMBER	Number of times the transaction failed to serialize, producing errors, per cursor
OUTLINE_CATEGORY	VARCHAR2(64)	If an outline was applied during construction of the cursor, then this column displays the category of that outline. Otherwise the column is left blank.
CPU_TIME	NUMBER	CPU time (in microseconds) used by this cursor for parsing, executing, and fetching
ELAPSED_TIME	NUMBER	Elapsed time (in microseconds) used by this cursor for parsing, executing, and fetching
OUTLINE_SID	NUMBER	Outline session identifier
CHILD_ADDRESS	RAW(4 \| 8)	Address of the child cursor
SQLTYPE	NUMBER	Denotes the version of the SQL language used for this statement
REMOTE	VARCHAR2(1)	Indicates whether the cursor is remote mapped (Y) or not (N)
OBJECT_STATUS	VARCHAR2(19)	Status of the cursor: VALID - Valid, authorized without errors VALID_AUTH_ERROR - Valid, authorized with authorization errors VALID_COMPILE_ERROR - Valid, authorized with compilation errors VALID_UNAUTH - Valid, unauthorized INVALID_UNAUTH - Invalid, unauthorized INVALID - Invalid, unauthorized but keep the timestamp
LITERAL_HASH_VALUE	NUMBER	Hash value of the literals which are replaced with system-generated bind variables and are to be matched, when CURSOR_SHARING is used. This is not the hash value for the SQL statement. If CURSOR_SHARING is not used, then the value is 0.
LAST_LOAD_TIME	VARCHAR2(19)	Time at which the query plan was loaded into the library cache
IS_OBSOLETE	VARCHAR2(1)	Indicates whether the cursor has become obsolete (Y) or not (N). This can happen if the number of child cursors is too large.
IS_BIND_SENSITIVE	VARCHAR2(1)	Indicates whether the cursor is bind sensitive (Y) or not (N). A query is considered bind-sensitive if the optimizer peeked at one of its bind variable values when computing predicate selectivities and where a change in a bind variable value may cause the optimizer to generate a different plan.
IS_BIND_AWARE	VARCHAR2(1)	Indicates whether the cursor is bind aware (Y) or not (N). A query is considered bind-aware if it has been marked to use extended cursor sharing. The query would already have been marked as bind-sensitive.
IS_SHAREABLE	VARCHAR2(1)	Indicates whether the cursor can be shared (Y) or not (N)
CHILD_LATCH	NUMBER	Child latch number that is protecting the cursor. This column is obsolete and maintained for backward compatibility.
SQL_PROFILE	VARCHAR2(64)	SQL profile used for this statement, if any
SQL_PATCH	VARCHAR2(30)	SQL patch used for this statement, if any
SQL_PLAN_BASELINE	VARCHAR2(30)	SQL plan baseline used for this statement, if any
PROGRAM_ID	NUMBER	Program identifier
PROGRAM_LINE#	NUMBER	Program line number
EXACT_MATCHING_SIGNATURE	NUMBER	Signature calculated on the normalized SQL text. The normalization includes the removal of white space and the uppercasing of all non-literal strings.
FORCE_MATCHING_SIGNATURE	NUMBER	Signature used when the CURSOR_SHARING parameter is set to FORCE
LAST_ACTIVE_TIME	DATE	TIme at which the query plan was last active
BIND_DATA	RAW(2000)	Bind data
TYPECHECK_MEM	NUMBER	Typecheck memory
IO_CELL_OFFLOAD_ELIGIBLE_BYTES	NUMBER	Number of I/O bytes which can be filtered by the Exadata storage system See Also: Oracle Exadata Storage Server Software documentation for more information
IO_INTERCONNECT_BYTES	NUMBER	Number of I/O bytes exchanged between Oracle Database and the storage system
PHYSICAL_READ_REQUESTS	NUMBER	Number of physical read I/O requests issued by the monitored SQL
PHYSICAL_READ_BYTES	NUMBER	Number of bytes read from disks by the monitored SQL
PHYSICAL_WRITE_REQUESTS	NUMBER	Number of physical write I/O requests issued by the monitored SQL
PHYSICAL_WRITE_BYTES	NUMBER	Number of bytes written to disks by the monitored SQL
OPTIMIZED_PHY_READ_REQUESTS	NUMBER	Number of physical read I/O requests from Database Smart Flash Cache issued by the monitored SQL
LOCKED_TOTAL	NUMBER	Total number of times the child cursor has been locked
PINNED_TOTAL	NUMBER	Total number of times the child cursor has been pinned
IO_CELL_UNCOMPRESSED_BYTES	NUMBER	Number of uncompressed bytes (that is, size after decompression) that are offloaded to the Exadata cells See Also: Oracle Exadata Storage Server Software documentation for more information
IO_CELL_OFFLOAD_RETURNED_BYTES	NUMBER	Number of bytes that are returned by Exadata cell through the regular I/O path See Also: Oracle Exadata Storage Server Software documentation for more information

v$sysstat

Column	Datatype	Description
STATISTIC#	NUMBER	Statistic number Note: Statistics numbers are not guaranteed to remain constant from one release to another. Therefore, you should rely on the statistics name rather than its number in your applications.
NAME	VARCHAR2(64)	Statistic name. You can get a complete listing of statistic names by querying the V$STATNAME view.
CLASS	NUMBER	A number representing one or more statistics class. The following class numbers are additive: 1 - User 2 - Redo 4 - Enqueue 8 - Cache 16 - OS 32 - Real Application Clusters 64 - SQL 128 - Debug
VALUE	NUMBER	Statistic value

all_users

ALL_USERS lists all users of the database visible to the current user. This view does not describe the users (see the related views).

Related Views

· DBA_USERS describes all users of the database, and contains more columns than ALL_USERS.

· USER_USERS describes the current user, and contains more columns than ALL_USERS.

Column	Datatype	NULL	Description
USERNAME	VARCHAR2(30)	NOT NULL	Name of the user
USER_ID	NUMBER	NOT NULL	ID number of the user
CREATED	DATE	NOT NULL	User creation date

all_objects

ALL_OBJECTS describes all objects accessible to the current user.

Related Views

· DBA_OBJECTS describes all objects in the database.

· USER_OBJECTS describes all objects owned by the current user. This view does not display the OWNER column.

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the object
OBJECT_NAME	VARCHAR2(30)	NOT NULL	Name of the object
SUBOBJECT_NAME	VARCHAR2(30)		Name of the subobject (for example, partition)
OBJECT_ID	NUMBER	NOT NULL	Dictionary object number of the object
DATA_OBJECT_ID	NUMBER		Dictionary object number of the segment that contains the object
			Note: OBJECT_ID and DATA_OBJECT_ID display data dictionary metadata. Do not confuse these numbers with the unique 16-byte object identifier (object ID) that Oracle Database assigns to row objects in object tables in the system.
OBJECT_TYPE	VARCHAR2(19)		Type of the object (such as TABLE, INDEX)
CREATED	DATE	NOT NULL	Timestamp for the creation of the object
LAST_DDL_TIME	DATE	NOT NULL	Timestamp for the last modification of the object resulting from a DDL statement (including grants and revokes)
TIMESTAMP	VARCHAR2(19)		Timestamp for the specification of the object (character data)
STATUS	VARCHAR2(7)		Status of the object: VALID INVALID N/A
TEMPORARY	VARCHAR2(1)		Indicates whether the object is temporary (the current session can see only data that it placed in this object itself) (Y) or not (N)
GENERATED	VARCHAR2(1)		Indicates whether the name of this object was system-generated (Y) or not (N)
SECONDARY	VARCHAR2(1)		Indicates whether this is a secondary object created by the ODCIIndexCreate method of the Oracle Data Cartridge (Y) or not (N)
NAMESPACE	NUMBER	NOT NULL	Namespace for the object
EDITION_NAME	VARCHAR2(30)		Name of the edition in which the object is actual

all_def_audit_opts

Column	Datatype	NULL	Description
ALT	VARCHAR2(3)		Auditing ALTER WHENEVER SUCCESSFUL / UNSUCCESSFUL
AUD	VARCHAR2(3)		Auditing AUDIT WHENEVER SUCCESSFUL / UNSUCCESSFUL
COM	VARCHAR2(3)		Auditing COMMENT WHENEVER SUCCESSFUL / UNSUCCESSFUL
DEL	VARCHAR2(3)		Auditing DELETE WHENEVER SUCCESSFUL / UNSUCCESSFUL
GRA	VARCHAR2(3)		Auditing GRANT WHENEVER SUCCESSFUL / UNSUCCESSFUL
IND	VARCHAR2(3)		Auditing INDEX WHENEVER SUCCESSFUL / UNSUCCESSFUL
INS	VARCHAR2(3)		Auditing INSERT WHENEVER SUCCESSFUL / UNSUCCESSFUL
LOC	VARCHAR2(3)		Auditing LOCK WHENEVER SUCCESSFUL / UNSUCCESSFUL
REN	VARCHAR2(3)		Auditing RENAME WHENEVER SUCCESSFUL / UNSUCCESSFUL
SEL	VARCHAR2(3)		Auditing SELECT WHENEVER SUCCESSFUL / UNSUCCESSFUL
UPD	VARCHAR2(3)		Auditing UPDATE WHENEVER SUCCESSFUL / UNSUCCESSFUL
REF	CHAR(3)		This column is obsolete and maintained for backward compatibility. The value of this column is always -/-
EXE	VARCHAR2(3)		Auditing EXECUTE WHENEVER SUCCESSFUL / UNSUCCESSFUL
FBK	VARCHAR2(3)		Auditing FLASHBACK WHENEVER SUCCESSFUL / UNSUCCESSFUL
REA	VARCHAR2(3)		Auditing READ WHENEVER SUCCESSFUL / UNSUCCESSFUL

all_tables

ALL_TABLES describes the relational tables accessible to the current user. To gather statistics for this view, use the ANALYZE SQL statement.

Related Views

· DBA_TABLES describes all relational tables in the database.

· USER_TABLES describes the relational tables owned by the current user. This view does not display the OWNER column.

Note:

Columns marked with an asterisk (*) are populated only if you collect statistics on the table with the ANALYZE statement or the DBMS_STATS package.

Column	Datatype	NULL	Description
OWNER	VARCHAR2(30)	NOT NULL	Owner of the table
TABLE_NAME	VARCHAR2(30)	NOT NULL	Name of the table
TABLESPACE_NAME	VARCHAR2(30)		Name of the tablespace containing the table; NULL for partitioned, temporary, and index-organized tables
CLUSTER_NAME	VARCHAR2(30)		Name of the cluster, if any, to which the table belongs
IOT_NAME	VARCHAR2(30)		Name of the index-organized table, if any, to which the overflow or mapping table entry belongs. If the IOT_TYPE column is not NULL, then this column contains the base table name.
STATUS	VARCHAR2(8)		If a previous DROP TABLE operation failed, indicates whether the table is unusable (UNUSABLE) or valid (VALID)
PCT_FREE	NUMBER		Minimum percentage of free space in a block; NULL for partitioned tables
PCT_USED	NUMBER		Minimum percentage of used space in a block; NULL for partitioned tables
INI_TRANS	NUMBER		Initial number of transactions; NULL for partitioned tables
MAX_TRANS	NUMBER		Maximum number of transactions; NULL for partitioned tables
INITIAL_EXTENT	NUMBER		Size of the initial extent (in bytes); NULL for partitioned tables
NEXT_EXTENT	NUMBER		Size of secondary extents (in bytes); NULL for partitioned tables
MIN_EXTENTS	NUMBER		Minimum number of extents allowed in the segment; NULL for partitioned tables
MAX_EXTENTS	NUMBER		Maximum number of extents allowed in the segment; NULL for partitioned tables
PCT_INCREASE	NUMBER		Percentage increase in extent size; NULL for partitioned tables
FREELISTS	NUMBER		Number of process freelists allocated to the segment; NULL for partitioned tables
FREELIST_GROUPS	NUMBER		Number of freelist groups allocated to the segment; NULL for partitioned tables
LOGGING	VARCHAR2(3)		Indicates whether or not changes to the table are logged; NULL for partitioned tables: YES NO
BACKED_UP	VARCHAR2(1)		Indicates whether the table has been backed up since the last modification (Y) or not (N)
NUM_ROWS*	NUMBER		Number of rows in the table
BLOCKS*	NUMBER		Number of used data blocks in the table
EMPTY_BLOCKS	NUMBER		Number of empty (never used) data blocks in the table. This column is populated only if you collect statistics on the table using the ANALYZE statement.
AVG_SPACE*	NUMBER		Average amount of free space, in bytes, in a data block allocated to the table
CHAIN_CNT*	NUMBER		Number of rows in the table that are chained from one data block to another, or which have migrated to a new block, requiring a link to preserve the old ROWID
AVG_ROW_LEN*	NUMBER		Average length of a row in the table (in bytes)
AVG_SPACE_FREELIST _BLOCKS	NUMBER		Average freespace of all blocks on a freelist
NUM_FREELIST_BLOCKS	NUMBER		Number of blocks on the freelist
DEGREE	VARCHAR2(10)		Number of threads per instance for scanning the table, or DEFAULT
INSTANCES	VARCHAR2(10)		Number of instances across which the table is to be scanned, or DEFAULT
CACHE	VARCHAR2(5)		Indicates whether the table is to be cached in the buffer cache (Y) or not (N)
TABLE_LOCK	VARCHAR2(8)		Indicates whether table locking is enabled (ENABLED) or disabled (DISABLED)
SAMPLE_SIZE	NUMBER		Sample size used in analyzing this table
LAST_ANALYZED	DATE		Date on which this table was most recently analyzed
PARTITIONED	VARCHAR2(3)		Indicates whether the table is partitioned (YES) or not (NO)
IOT_TYPE	VARCHAR2(12)		If the table is an index-organized table, then IOT_TYPE is IOT, IOT_OVERFLOW, or IOT_MAPPING. If the table is not an index-organized table, then IOT_TYPE is NULL.
TEMPORARY	VARCHAR2(1)		Indicates whether the table is temporary (Y) or not (N)
SECONDARY	VARCHAR2(1)		Indicates whether the table is a secondary object created by the ODCIIndexCreate method of the Oracle Data Cartridge (Y) or not (N)
NESTED	VARCHAR2(3)		Indicates whether the table is a nested table (YES) or not (NO)
BUFFER_POOL	VARCHAR2(7)		Buffer pool for the table; NULL for partitioned tables: DEFAULT KEEP RECYCLE NULL
FLASH_CACHE	VARCHAR2(7)		Database Smart Flash Cache hint to be used for table blocks: DEFAULT KEEP NONE Solaris and Oracle Linux functionality only.
CELL_FLASH_CACHE	VARCHAR2(7)		Cell flash cache hint to be used for table blocks: DEFAULT KEEP NONE See Also: Oracle Exadata Storage Server Software documentation for more information
ROW_MOVEMENT	VARCHAR2(8)		Indicates whether partitioned row movement is enabled (ENABLED) or disabled (DISABLED)
GLOBAL_STATS	VARCHAR2(3)		For partitioned tables, indicates whether statistics for the table as a whole (global statistics) are accurate (YES) or whether they were not collected and have to be estimated from statistics on underlying partitions and subpartitions (NO)
USER_STATS	VARCHAR2(3)		Indicates whether statistics were entered directly by the user (YES) or not (NO)
DURATION	VARCHAR2(15)		Indicates the duration of a temporary table: SYS$SESSION - Rows are preserved for the duration of the session SYS$TRANSACTION - Rows are deleted after COMMIT Null - Permanent table
SKIP_CORRUPT	VARCHAR2(8)		Indicates whether Oracle Database ignores blocks marked corrupt during table and index scans (ENABLED) or raises an error (DISABLED). To enable this feature, run the DBMS_REPAIR.SKIP_CORRUPT_BLOCKS procedure.
MONITORING	VARCHAR2(3)		Indicates whether the table has the MONITORING attribute set (YES) or not (NO)
CLUSTER_OWNER	VARCHAR2(30)		Owner of the cluster, if any, to which the table belongs
DEPENDENCIES	VARCHAR2(8)		Indicates whether row-level dependency tracking is enabled (ENABLED) or disabled (DISABLED)
COMPRESSION	VARCHAR2(8)		Indicates whether table compression is enabled (ENABLED) or not (DISABLED); NULL for partitioned tables
COMPRESS_FOR	VARCHAR2(12)		Default compression for what kind of operations: BASIC OLTP QUERY LOW QUERY HIGH ARCHIVE LOW ARCHIVE HIGH NULL
DROPPED	VARCHAR2(3)		Indicates whether the table has been dropped and is in the recycle bin (YES) or not (NO); NULL for partitioned tables
READ_ONLY	VARCHAR2(3)		Indicates whether the table IS READ-ONLY (YES) or not (NO)
SEGMENT_CREATED	VARCHAR2(3)		Indicates whether the table segment is created (YES) or not (NO)
RESULT_CACHE	VARCHAR2(7)		Result cache mode annotation for the table: DEFAULT - Table has not been annotated FORCE MANUAL

all_indexes

ALL_INDEXES describes the indexes on the tables accessible to the current user. To gather statistics for this view and the related views DBA_INDEXES and USER_INDEXES, use the SQL ANALYZE statement.

Related Views

· DBA_INDEXES describes all indexes in the database.

· USER_INDEXES describes the indexes owned by the current user. This view does not display the OWNER column.

Note:

Column names followed by an asterisk are populated only if you collect statistics on the index using the ANALYZE statement or the DBMS_STATS package.

session_roles

Column	Datatype	NULL	Description
ROLE	VARCHAR2(30)	NOT NULL	Name of the role

session_privs

Column	Datatype	NULL	Description
PRIVILEGE	VARCHAR2(40)	NOT NULL	Name of the privilege

index_stats

Column	Datatype	NULL	Description
HEIGHT	NUMBER		Height of the B-Tree
BLOCKS	NUMBER	NOT NULL	Blocks allocated to the segment
NAME	VARCHAR2(30)	NOT NULL	Name of the index
PARTITION_NAME	VARCHAR2(30)		Name of the partition of the index which was analyzed. If the index is not partitioned, NULL is returned.
LF_ROWS	NUMBER		Number of leaf rows (values in the index)
LF_BLKS	NUMBER		Number of leaf blocks in the B-Tree
LF_ROWS_LEN	NUMBER		Sum of the lengths of all the leaf rows
LF_BLK_LEN	NUMBER		Usable space in a leaf block
BR_ROWS	NUMBER		Number of branch rows in the B-Tree
BR_BLKS	NUMBER		Number of branch blocks in the B-Tree
BR_ROWS_LEN	NUMBER		Sum of the lengths of all the branch blocks in the B-Tree
BR_BLK_LEN	NUMBER		Usable space in a branch block
DEL_LF_ROWS	NUMBER		Number of deleted leaf rows in the index
DEL_LF_ROWS_LEN	NUMBER		Total length of all deleted rows in the index
DISTINCT_KEYS	NUMBER		Number of distinct keys in the index (may include rows that have been deleted)
MOST_REPEATED_KEY	NUMBER		How many times the most repeated key is repeated (may include rows that have been deleted)
BTREE_SPACE	NUMBER		Total space currently allocated in the B-Tree
USED_SPACE	NUMBER		Total space that is currently being used in the B-Tree
PCT_USED	NUMBER		Percent of space allocated in the B-Tree that is being used
ROWS_PER_KEY	NUMBER		Average number of rows per distinct key (this figure is calculated without consideration of deleted rows)
BLKS_GETS_PER_ACCESS	NUMBER		Expected number of consistent mode block reads per row, assuming that a randomly chosen row is accessed using the index. Used to calculate the number of consistent reads that will occur during an index scan.
PRE_ROWS	NUMBER		Number of prefix rows (values in the index)
PRE_ROWS_LEN	NUMBER		Sum of lengths of all prefix rows
OPT_CMPR_COUNT	NUMBER		Optimal key compression length
OPT_CMPR_PCTSAVE	NUMBER		Corresponding space savings after an ANALYZE

Dual

DUAL is a small table in the data dictionary that Oracle Database and user-written programs can reference to guarantee a known result. The dual table is useful when a value must be returned only once, for example, the current date and time. All database users have access to DUAL.

The DUAL table has one column called DUMMY and one row containing the value X. The following example queries DUAL to perform an arithmetical operation:

SQL> SELECT ((3*4)+5)/3 FROM DUAL;

((3*4)+5)/3

-----------

5.66666667

ORACLE_系統字典常用表整理

dba_users

dba_segments

dba_objects

dba_extents

dba_tablespaces

dba_data_files

dba_temp_files

dba_rollback_segs

dba_ts_quotas

dba_free_space

dba_profiles

dba_sys_privs

dba_tab_privs

dba_col_privs

dba_role_privs

dba_audit_trail

dba_stmt_audit_opts

dba_audit_object

dba_audit_session

dba_indexes

user_objects

user_source

user_segments

user_tables

user_tab_columns

user_constraints

user_sys_privs

user_tab_privs

user_col_privs

user_role_privs

user_indexes

user_ind_columns

user_cons_columns

user_clusters

user_clu_columns

user_cluster_hash_expressions

v$database

v$datafile

v$controlfile

v$logfile

v$instance

v$log

v$loghist

v$sga

v$parameter

v$process

v$bgprocess

v$controlfile_record_section

v$thread

v$datafile_header

v$archived_log

v$archive_dest

v$logmnr_contents

v$logmnr_dictionary

v$logmnr_logs

v$tablespace

v$tempfile

v$filestat

v$undostat

v$rollname

v$session

v$transaction

v$rollstat

v$pwfile_users

v$sqlarea

v$sql

v$sysstat

all_users

all_objects

all_def_audit_opts

all_tables

all_indexes

session_roles

session_privs

index_stats

Dual

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