Clone PDB from same CDB

Clone PDB

用途：

1、用于测试，从生产系统clone数据来进行测试

2、诊断性能问题

 

Clone PDB Using OMF from same CDB

环境信息：

DB Version：12.0.1

 

1 创建必要的目录

oracle*cdbtest*/u01/app/oracle/oradata/cdbtest>$mkdir pdb_clone

2 查看现有pdbs信息

SYS@cdbtest> select pdb_name,status from cdb_pdbs ;

 

PDB_NAME STATUS

---------------------------------------- -------------

PDB1 NORMAL

PDB$SEED NORMAL

PDB3_HIS NORMAL

 

SYS@cdbtest> select con_id,dbid,name ,open_mode from v$pdbs ;

 

CON_ID DBID NAME OPEN_MODE

---------- ---------- ------------------------------ ----------

2 4087438519 PDB$SEED READ ONLY

3 3352592044 PDB1 READ WRITE

4 3960920495 PDB3_HIS READ WRITE

3 关闭pdb3_his并打开为read only状态

 

SYS@cdbtest> alter pluggable database pdb3_his close immediate ;

 

Pluggable database altered.

 

SYS@cdbtest> alter pluggable database pdb3_his open read only ;

 

 

Pluggable database altered.

 

4 使用OMF

SYS@cdbtest> show parameter db_create_file ;

 

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

db_create_file_dest string

 

SYS@cdbtest> alter system set db_create_file_dest='/u01/app/oracle/oradata/cdbtest/pdb_clone' ;

 

System altered.

 

5 Clone

SYS@cdbtest> create pluggable database pdb1_clone from pdb3_his ;

 

Pluggable database created.

 

SYS@cdbtest> SYS@cdbtest> SYS@cdbtest>

SYS@cdbtest> select con_id,dbid,name ,open_mode from v$pdbs ;

 

CON_ID DBID NAME OPEN_MODE

---------- ---------- ------------------------------ ----------

2 4087438519 PDB$SEED READ ONLY

3 3352592044 PDB1 READ WRITE

4 3960920495 PDB3_HIS READ ONLY

5 2740102686 PDB1_CLONE MOUNTED

 

6 打开克隆成功的数据并验证

SYS@cdbtest> alter pluggable database pdb1_clone open ;

 

Pluggable database altered.

 

SYS@cdbtest> select con_id,dbid,name ,open_mode from v$pdbs ;

 

CON_ID DBID NAME OPEN_MODE

---------- ---------- ------------------------------ ----------

2 4087438519 PDB$SEED READ ONLY

3 3352592044 PDB1 READ WRITE

4 3960920495 PDB3_HIS READ ONLY

5 2740102686 PDB1_CLONE READ WRITE

 

 

Clone PDB Not Using OMF from same CDB

 

 

创建语法：

 

CREATE PLUGGABLE DATABASE pdb56 FROM pdb3_his

PATH_PREFIX = '/u01/app/oracle/oradata'

FILE_NAME_CONVERT = ('/u01/app/oracle/oradata/cdbtest/pdb3/', '/u01/app/oracle/oradata/cdbtest/pdb56/');