12c19c 从 no-cdb升级到pdb步骤

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如果把数据库从11g 升级到12c,或者在12c中创建的,就是NON CDB,那么这样的数据库就是普通的单实例,和12c 之前的数据库没有区别,但12c 的特点就是CDB 管理,所以既然上12c,还是要切换成CDB 进行管理。

所以下面的测试步骤,就是把NON CDB 切换成CDB的步骤。

1.当前环境说明

当前数据库里已经启动了2个实例: bishuo和 test。

bishuo:/home/oracle@oracle>ps -ef |grep pmon
oracle     3666      1  0 13:25 ?        00:00:00 ora_pmon_bishuo
oracle     4507      1  0 13:49 ?        00:00:00 ora_pmon_test
oracle     4693 189245  0 13:49 pts/1    00:00:00 grep pmon

其中bishuo数据库是12C的CDB数据库:
SQL> select name,CDB from v$database;
 
NAME      CDB
--------- ---
BISHUO      YES

test数据库是12C的non cdb数据库
SQL> select name,CDB from v$database;
 
NAME      CDB
--------- ---
TEST      NO
 
SQL> set lin 130;
SQL> select * from v$version;
 
BANNER                                             CON_ID
-------------------------------------------------------------------------------- ----------
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production          0
PL/SQL Release 12.1.0.2.0 - Production                              0
CORE    12.1.0.2.0    Production                              0
TNS for Linux: Version 12.1.0.2.0 - Production                          0
NLSRTL Version 12.1.0.2.0 - Production                              0 

2.开始切换
2.1 Cleanly shutdown 数据库并用read only 打开
SQL> select name,cdb from v$database;
 
NAME      CDB
--------- ---
TEST      NO
 
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
 
SQL> startup open read only;
ORACLE instance started.
 
Total System Global Area 6442450944 bytes
Fixed Size            4511656 bytes
Variable Size         1124075608 bytes
Database Buffers     5301600256 bytes
Redo Buffers           12263424 bytes
Database mounted.
Database opened.
 
SQL> select name,open_mode,cdb from v$database;
 
NAME      OPEN_MODE           CDB
--------- -------------------- ---
TEST      READ ONLY           NO
2.2 生成xml格式的数据库描述文件

SQL> BEGIN
  DBMS_PDB.DESCRIBE(pdb_descr_file => /tmp/test.xml);
END;
/  2    3    4  
 
PL/SQL procedure successfully completed.
2.3 关闭数据库

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

2.4 连接CDB并创建PDB (这里需要有cdb数据库的,如果没有cdb数据库,那么就需要dbca建立一个cdb数据库) bishuo:/home/oracle@oracle>sqlplus / as sysdba SQL*Plus: Release 12.1.0.2.0 Production on Tue Nov 21 14:02:06 2017 Copyright (c) 1982, 2014, Oracle. All rights reserved. Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options SQL> select name,open_mode,cdb from v$database; NAME OPEN_MODE CDB --------- -------------------- --- BISHUO READ WRITE YES 创建PDB: SQL> select con_id,dbid,name,open_mode from v$pdbs; CON_ID DBID NAME OPEN_MODE ---------- ---------- ------------------------------ ---------- 2 1534143422 PDB$SEED READ ONLY SQL> CREATE PLUGGABLE DATABASE test USING /tmp/test.xml COPY FILE_NAME_CONVERT = (/home/oracle/oradata/12ctest/TEST/, //home/oracle/oradata/bishuo/test/); 2 3 Pluggable database created.
==========================================================================
这里可以直接设置一个参数

alter system set db_create_file_dest=‘/u01/app/oracle/oradata/‘;

用如下简单的方法直接进行升级

create pluggable database orcl using ‘/u02/noncdb/orcl.xml‘ copy;


=========================================================================== 数据库复制成功: test:
/home/oracle/oradata/bishuo/test@oracle>pwd /home/oracle/oradata/bishuo/test test:/home/oracle/oradata/bishuo/test@oracle>ls sysaux01.dbf  system01.dbf  temp01.dbf  users01.dbf  2.5 切换到PDB并执行脚本 SQL> show pdbs CON_ID CON_NAME OPEN MODE RESTRICTED ---------- ------------------------------ ---------- ---------- 2 PDB$SEED READ ONLY NO 3 TEST MOUNTED
SQL
> alter session set container=test; Session altered. --执行脚本: sql> @$ORACLE_HOME/rdbms/admin/noncdb_to_pdb.sql 这个脚本时间有点长,大概执行20分钟左右 2.6 启动PDB并检查状态 SQL> show pdbs CON_ID CON_NAME OPEN MODE RESTRICTED ---------- ------------------------------ ---------- ---------- 3 TEST MOUNTED SQL> show con_name CON_NAME ------------------------------ TEST SQL> alter pluggable database test open; Pluggable database altered. SQL> show pdbs CON_ID CON_NAME OPEN MODE RESTRICTED ---------- ------------------------------ ---------- ---------- 3 TEST READ WRITE NO SQL> SELECT name, open_mode FROM v$pdbs; NAME OPEN_MODE ------------------------------ ---------- TEST READ WRITE 1 row selected. 这是之前插入的测试数据: SQL> select * from test;         ID NAME ---------- ----------          1 shiyu 1 row selected.

 

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