Oracle 12C 将Non-PDB插入到CDB中

非CDB迁移到CDB实战

最新推荐文章于 2024-07-17 23:19:22 发布

最新推荐文章于 2024-07-17 23:19:22 发布 · 98 阅读

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本文介绍如何将非CDB(独立数据库)通过Oracle 12c新增的dbms_pdb包迁移到CDB(可插拔数据库)中。首先展示了查询非CDB数据文件位置的方法，并通过设置数据库为只读模式确保数据一致性。接着，利用dbms_pdb.describe过程生成描述文件，最后在CDB环境中执行PLUG操作完成迁移。

[img]http://dl2.iteye.com/upload/attachment/0095/5399/0b3273a8-f627-3d41-9ee3-058b1c80de82.jpg[/img]
进入到非CDB数据库中
查看数据文件的位置

[Oracle@shuang ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.1.0 Production on Wed Feb 26 13:17:45 2014

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area 1060585472 bytes
Fixed Size 2296472 bytes
Variable Size 704644456 bytes
Database Buffers 348127232 bytes
Redo Buffers 5517312 bytes
SQL> select name from v$datafile;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/SHUANG/datafile/o1_mf_system_9jckkfwg_.dbf
/u01/app/oracle/oradata/SHUANG/datafile/o1_mf_sysaux_9jckdvs6_.dbf
/u01/app/oracle/oradata/SHUANG/datafile/o1_mf_undotbs1_9jckpbno_.dbf
/u01/app/oracle/oradata/SHUANG/datafile/o1_mf_users_9jckp97s_.dbf

查看数据库为Non-CDB数据库

SQL> select name ,cdb from v$database;

NAME CDB
--------- ---
SHUANG NO

建立测试用户以及表

SQL> conn a/a
Connected.

SQL> select count(*) from a;

COUNT(*)
----------
1024

使用dbms_pdb包进行迁移，dbms_pdb是12c新增加的，为了方便迁移用的。可以用desc dbms_pdb查看下具体参数。

将Non-CDB数据库迁移到CDB数据库，得先将Non-CDB数据库设置为只读数据库，再进行进一步操作。

SQL> shut immediate
Database closed.
Database dismounted.
ORACLE instance shut down.

[oracle@shuang ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.1.0 Production on Wed Feb 26 13:17:45 2014

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup mount
ORACLE instance started.

Total System Global Area 1060585472 bytes
Fixed Size 2296472 bytes
Variable Size 704644456 bytes
Database Buffers 348127232 bytes
Redo Buffers 5517312 bytes

Database mounted

SQL>alter database open read only;

Database altered.

SQL> exec dbms_pdb.describe(PDB_DESCR_FILE=>'/u01/app/oracle/oradata/SHUANG/datafile/shuang12c.xml');

PL/SQL procedure successfully completed.

SQL> host ls -l /u01/app/oracle/oradata/SHUANG/datafile/shuang12c.xml
-rw-r--r-- 1 oracle oinstall 4123 2月 26 12:50 /u01/app/oracle/oradata/SHUANG/datafile/shuang12c.xml

SQL> shut immediate
Database closed.
Database dismounted.
ORACLE instance shut down.

在CDB中执行PLUG，就可以将这个Non-CDB插入CDB中，指定COPY参数，将文件复制到CDB的相应目录下，如果已经复制到特定目录，则可以指定NOCOPY选项，就无需再复制一遍。

进入到CDB数据库中。

SQL>create pluggable database shuang using '/u01/app/oracle/oradata/SHUANG/datafile/shuang12c.xml' copy ;

PL/SQL procedure successfully completed.

SQL> select name,open_mode from v$pdbs;

NAME OPEN_MODE
------------------------------ ----------
PDB$SEED READ ONLY
PDBORCL MOUNTED
SHUANG READ WRITE

SQL> alter session set container=shuang;

Session altered.

SQL> select count(*) from a.a;

COUNT(*)
----------
1024