【DBA】DBA_HIST_SQLSTAT檢視用途

SNAP_ID

NUMBER

NOT NULL

快照的ID

DBID

NUMBER

NOT NULL

資料庫ID

INSTANCE_NUMBER

NUMBER

NOT NULL

例項ID

SQL_ID

VARCHAR2(13)

NOT NULL

SQL identifier of the parent cursor in the library cache

PLAN_HASH_VALUE

NUMBER

NOT NULL

Numerical representation of the SQL plan for the 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).--SQL執行計劃的hash值

OPTIMIZER_COST

NUMBER

Cost of the query given by the optimizer

OPTIMIZER_MODE

VARCHAR2(10)

Mode under which the SQL statement is executed

OPTIMIZER_ENV_HASH_VALUE

NUMBER

Hash Value for the optimizer environment

SHARABLE_MEM

NUMBER

Amount of shared memory used by the child cursor (in bytes)

LOADED_VERSIONS

NUMBER

Indicates whether the context heap is loaded ( 1) or not ( 0)

VERSION_COUNT

NUMBER

Number of children associated with the cursor

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

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

SQL_PROFILE

VARCHAR2(64)

Name of the applied SQL Profile

FORCE_MATCHING_SIGNATURE

NUMBER

The signature used when the  CURSOR_SHARINGparameter is set to  FORCE

PARSING_SCHEMA_ID

NUMBER

Schema ID that was used to originally build the child cursor

PARSING_SCHEMA_NAME

VARCHAR2(128)

Schema name that was used to originally build the child cursor

PARSING_USER_ID

NUMBER

User ID that was used to originally build the child cursor

FETCHES_TOTAL

NUMBER

Cumulative number of fetches associated with the SQL statement

FETCHES_DELTA

NUMBER

Delta number of fetches associated with the SQL statement

END_OF_FETCH_COUNT_TOTAL

NUMBER

Cumulative 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.

END_OF_FETCH_COUNT_DELTA

NUMBER

Delta 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.

SORTS_TOTAL

NUMBER

Cumulative number of sorts that were done for this child cursor

SORTS_DELTA

NUMBER

Delta number of sorts that were done for this child cursor

EXECUTIONS_TOTAL

NUMBER

Cumulative number of executions that took place on this object since it was brought into the library cache

EXECUTIONS_DELTA

NUMBER

Delta number of executions that took place on this object since it was brought into the library cache

PX_SERVERS_EXECS_TOTAL

NUMBER

Cumulative number of PX server executions

PX_SERVERS_EXECS_DELTA

NUMBER

Delta number of PX server executions

LOADS_TOTAL

NUMBER

Cumulative number of times the object was either loaded or reloaded

LOADS_DELTA

NUMBER

Delta number of times the object was either loaded or reloaded

INVALIDATIONS_TOTAL

NUMBER

Cumulative number of times this child cursor has been invalidated

INVALIDATIONS_DELTA

NUMBER

Delta number of times this child cursor has been invalidated

PARSE_CALLS_TOTAL

NUMBER

Cumulative number of parse calls for this child cursor

PARSE_CALLS_DELTA

NUMBER

Delta number of parse calls for this child cursor

DISK_READS_TOTAL

NUMBER

Cumulative number of disk reads for this child cursor

DISK_READS_DELTA

NUMBER

Delta number of disk reads for this child cursor

BUFFER_GETS_TOTAL

NUMBER

Cumulative number of buffer gets for this child cursor

BUFFER_GETS_DELTA

NUMBER

Delta number of buffer gets for this child cursor

ROWS_PROCESSED_TOTAL

NUMBER

Cumulative number of rows the parsed SQL statement returns

ROWS_PROCESSED_DELTA

NUMBER

Delta number of rows the parsed SQL statement returns

CPU_TIME_TOTAL

NUMBER

Cumulative value of CPU time (in microseconds) used by this cursor for parsing/executing/fetching

CPU_TIME_DELTA

NUMBER

Delta value of CPU time (in microseconds) used by this cursor for parsing/executing/fetching

ELAPSED_TIME_TOTAL

NUMBER

Cumulative value of elapsed time (in microseconds) used by this cursor for parsing/executing/fetching. If the cursor uses parallel execution, then  ELAPSED_TIME_TOTAL is the cumulative time for the query coordinator, plus all parallel query slave processes.

ELAPSED_TIME_DELTA

NUMBER

Delta value of elapsed time (in microseconds) used by this cursor for parsing/executing/fetching

IOWAIT_TOTAL

NUMBER

Cumulative value of user I/O wait time (in microseconds)

IOWAIT_DELTA

NUMBER

Delta value of user I/O wait time (in microseconds)

CLWAIT_TOTAL

NUMBER

Cumulative value of cluster wait time (in microseconds)

CLWAIT_DELTA

NUMBER

Delta value of cluster wait time (in microseconds)

APWAIT_TOTAL

NUMBER

Cumulative value of application wait time (in microseconds)

APWAIT_DELTA

NUMBER

Delta value of application wait time (in microseconds)

CCWAIT_TOTAL

NUMBER

Cumulative value of concurrency wait time (in microseconds)

CCWAIT_DELTA

NUMBER

Delta value of concurrency wait time (in microseconds)

DIRECT_WRITES_TOTAL

NUMBER

Cumulative value of direct writes

DIRECT_WRITES_DELTA

NUMBER

Delta value of direct writes

PLSEXEC_TIME_TOTAL

NUMBER

Cumulative value of PL/SQL Execution Time (in microseconds)

PLSEXEC_TIME_DELTA

NUMBER

Delta value of PL/SQL Execution Time (in microseconds)

JAVEXEC_TIME_TOTAL

NUMBER

Cumulative value of Java Execution Time (in microseconds)

JAVEXEC_TIME_DELTA

NUMBER

Delta value of Java Execution Time (in microseconds)

IO_OFFLOAD_ELIG_BYTES_TOTAL

NUMBER

Cumulative value of 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_OFFLOAD_ELIG_BYTES_DELTA

NUMBER

Delta value of 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_TOTAL

NUMBER

Cumulative value of number of I/O bytes exchanged between Oracle Database and the storage system

IO_INTERCONNECT_BYTES_DELTA

NUMBER

Delta value of number of I/O bytes exchanged between Oracle Database and the storage system

PHYSICAL_READ_REQUESTS_TOTAL

NUMBER

Cumulative value of number of physical read I/O requests issued by the monitored SQL

PHYSICAL_READ_REQUESTS_DELTA

NUMBER

Delta value of number of physical read I/O requests issued by the monitored SQL

PHYSICAL_READ_BYTES_TOTAL

NUMBER

Cumulative value of number of bytes read from disks by the monitored SQL

PHYSICAL_READ_BYTES_DELTA

NUMBER

Delta value of number of bytes read from disks by the monitored SQL

PHYSICAL_WRITE_REQUESTS_TOTAL

NUMBER

Cumulative value of number of physical write I/O requests issued by the monitored SQL

PHYSICAL_WRITE_REQUESTS_DELTA

NUMBER

Delta value of number of physical write I/O requests issued by the monitored SQL

PHYSICAL_WRITE_BYTES_TOTAL

NUMBER

Cumulative value of number of bytes written to disks by the monitored SQL

PHYSICAL_WRITE_BYTES_DELTA

NUMBER

Delta value of number of bytes written to disks by the monitored SQL

OPTIMIZED_PHYSICAL_READS_TOTAL

NUMBER

Cumulative value of number of physical reads from the Database Smart Flash Cache or the Exadata Smart Flash Cache by the monitored SQL

OPTIMIZED_PHYSICAL_READS_DELTA

NUMBER

Delta value of number of physical reads from the Database Smart Flash Cache or the Exadata Smart Flash Cache by the monitored SQL

CELL_UNCOMPRESSED_BYTES_TOTAL

NUMBER

Cumulative value of 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

CELL_UNCOMPRESSED_BYTES_DELTA

NUMBER

Delta value of 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_OFFLOAD_RETURN_BYTES_TOTAL

NUMBER

Cumulative value of number of bytes that are returned by the Exadata cell for smart scan only (that is, not including bytes for other database I/O)

See Also: Oracle Exadata Storage Server Software documentation for more information

IO_OFFLOAD_RETURN_BYTES_DELTA

NUMBER

Delta value of number of bytes that are returned by the Exadata cell for smart scan only (that is, not including bytes for other database I/O)

See Also: Oracle Exadata Storage Server Software documentation for more information

BIND_DATA

RAW(2000)

Bind data

FLAG

NUMBER

Reserved for internal use

CON_DBID

NUMBER

The database ID of the PDB for the sampled session

CON_ID

NUMBER

The ID of the container that  CON_DBID identifies. Possible values include:

• 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

• 1: This value is used for rows containing data that pertain to only the root

• n: Where  n is the applicable container ID for the rows containing data