dbms_metadata.get_ddl學習

edwardking888發表於2010-07-12

今天在網上看到介紹dbms_metadata.get_ddl的文章,很不錯,學習下

1.顯示設定:

/*建立DBMS_METADATA:
@?/rdbms/admin/catmeta.sql
*/

SET SERVEROUTPUT ON
SET LINESIZE 1000
SET FEEDBACK OFF
set long 999999             
SET PAGESIZE 1000
/*若希望不顯示storage引數:
EXEC DBMS_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,'STORAGE',false);
*/
 

2.9i R2所支援的45個OBJECT TYPE:

Type Name                      Meaning
----------------------------
-- ------------------------------
AUDIT_OBJ                      audits of schema objects
AUDIT                          audits of SQL statements
ASSOCIATION                    associate statistics
CLUSTER                        clusters
COMMENT                        comments
CONSTRAINT                     constraints
CONTEXT                        application contexts
DB_LINK                        database links
DEFAULT_ROLE                   default roles
DIMENSION                      dimensions
DIRECTORY                      directories
FUNCTION                       stored functions
INDEX                          indexes
INDEXTYPE                      indextypes
JAVA_SOURCE                    Java sources
LIBRARY                        external procedure libraries
MATERIALIZED_VIEW              materialized views
MATERIALIZED_VIEW_LOG          materialized view logs
OBJECT_GRANT                   object grants
OPERATOR                       operators
OUTLINE                        stored outlines
PACKAGE                        stored packages
PACKAGE_SPEC                   package specifications
PACKAGE_BODY                   package bodies
PROCEDURE                      stored procedures
PROFILE                        profiles
PROXY                          proxy authentications
REF_CONSTRAINT                 referential constraint
ROLE                           roles
ROLE_GRANT                     role grants
ROLLBACK_SEGMENT               rollback segments
SEQUENCE                       sequences
SYNONYM                        synonyms
SYSTEM_GRANT                   system privilege grants
TABLE                          tables
TABLESPACE                     tablespaces
TABLESPACE_QUOTA               tablespace quotas
TRIGGER                        triggers
TRUSTED_DB_LINK                trusted links
TYPE                           user-defined types
TYPE_SPEC                      type specifications
TYPE_BODY                      type bodies
USER                           users
VIEW                           views
XMLSCHEMA                      XML schema

3.舉例:

--表:(注意:表名要大寫)
SQL> SELECT DBMS_METADATA.GET_DDL('TABLE','T2') FROM DUAL;
 
DBMS_METADATA.GET_DDL('TABLE','T2')
------------------------------------------------------------------------------
--
 

 
CREATE TABLE "TEST"."T2"
  
(    "OWNER" VARCHAR2(30),
        
"OBJECT_NAME" VARCHAR2(128),
        
"SUBOBJECT_NAME" VARCHAR2(30),
        
"OBJECT_ID" NUMBER,
        
"DATA_OBJECT_ID" NUMBER,
        
"OBJECT_TYPE" VARCHAR2(18),
        
"CREATED" DATE,
        
"LAST_DDL_TIME" DATE,
        
"TIMESTAMP" VARCHAR2(19),
        
"STATUS" VARCHAR2(7),
        
"TEMPORARY" VARCHAR2(1),
        
"GENERATED" VARCHAR2(1),
        
"SECONDARY" VARCHAR2(1)
  
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
 
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
 
TABLESPACE "EXAMPLE"
 
 
 
--索引:
SQL> SELECT DBMS_METADATA.GET_DDL('INDEX','IDX_OBJECT_NAME') FROM DUAL;
 
DBMS_METADATA.GET_DDL('INDEX','IDX_OBJECT_NAME')
------------------------------------------------------------------------------
--
 

 
CREATE INDEX "TEST"."IDX_OBJECT_NAME" ON "TEST"."T2" ("OBJECT_NAME")
 
PCTFREE 10 INITRANS 2 MAXTRANS 255
 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
 
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
 
TABLESPACE "EXAMPLE"
 
 
 
--主鍵:
SQL> SELECT DBMS_METADATA.GET_DDL('CONSTRAINT','PK_AA') FROM DUAL;
 
DBMS_METADATA.GET_DDL('CONSTRAINT','PK_AA')
------------------------------------------------------------------------------
--
 

 
ALTER TABLE "TEST"."PARENT" ADD CONSTRAINT "PK_AA" PRIMARY KEY ("BB")
 
USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255
 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
 
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
 
TABLESPACE "EXAMPLE"  ENABLE
 
 
 
 
--外來鍵:
SQL> SELECT DBMS_METADATA.GET_DDL('REF_CONSTRAINT','FK_AA') FROM DUAL;
 
DBMS_METADATA.GET_DDL('REF_CONSTRAINT','FK_AA')
------------------------------------------------------------------------------
--
 

 
ALTER TABLE "TEST"."CHILD" ADD CONSTRAINT "FK_AA" FOREIGN KEY ("AA")
          
REFERENCES "TEST"."PARENT" ("BB") ENABLE
 
 
 
--表空間:
SQL>  SELECT DBMS_METADATA.GET_DDL('TABLESPACE','SYSAUX') FROM DUAL;
DBMS_METADATA.GET_DDL('TABLESPACE','SYSAUX')
------------------------------------------------------------------------

  CREATE TABLESPACE "SYSAUX" DATAFILE
  '/u01/oracle/oradata/orcl/sysaux01.dbf

 
 
 
--使用者:
DBMS_METADATA.GET_DDL('USER','SYSTEM')
-------------------------------------------------------------------------------

   ALTER USER "SYSTEM" IDENTIFIED BY VALUES 'S:C27C11320D7002613C610B3F5C293AE8
 

4.綜上所述:select dbms_metadata.get_ddl(’OBJECT_TYPE’,'OBJECT_NAME’,'SCHEMA’) from dual|user_xxx|all_xxx|dba_xxx;

來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/8183550/viewspace-667778/,如需轉載,請註明出處,否則將追究法律責任。

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