探索Oracle之数据库升级七
11gR2 to 12c 升级完成后插入PDB

前言：

       从Oracle 12c开始，引入了容器数据库的概念，可以实现数据库插拔操作，如下图:

现在我们就来看看如何将11.2.0.4的数据库插入到12c的CDP里面去，让其成为一个PDB

数据库。

一、查看数据库信息:

SQL> col BANNER format a80
SQL> set line 300
SQL> select * from v$version;

BANNER CON_ID
-------------------------------------------------------------------------------- ----------
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production 0
PL/SQL Release 12.1.0.1.0 - Production 0
CORE 12.1.0.1.0 Production 0
TNS for Linux: Version 12.1.0.1.0 - Production 0
NLSRTL Version 12.1.0.1.0 - Production

SQL> select cdb,name,dbid from v$database;

CDB NAME DBID
--- --------- ----------
NO WOO 4199532651

从这里我们可以看到实际上通过升级之后上来的数据库还是一个non-CDB，并非CDB数据库，那么这个时候我们需要在这个none-CDB库中生成用户PDB的XML文件，再创建CDB数据库进行插入进去。

二、查看表空间及数据文件信息：

SQL> select * from v$tablespace;

       TS# NAME INC BIG FLA ENC CON_ID
---------- ------------------------------ --- --- --- --- ----------
         0 SYSTEM YES NO YES 0
         1 SYSAUX YES NO YES 0
         2 UNDOTBS1 YES NO YES 0
         4 USERS YES NO YES 0
         3 TEMP NO NO YES 0

SQL> set line 300
SQL> col file_name format a40
SQL> col tablespace_name format a10
SQL> select tablespace_name,file_name from dba_data_files;

TABLESPACE FILE_NAME
---------- ----------------------------------------
USERS /DBData/woo/woo/users01.dbf
UNDOTBS1 /DBData/woo/woo/undotbs01.dbf
SYSAUX /DBData/woo/woo/sysaux01.dbf
SYSTEM /DBData/woo/woo/system01.dbf

三、创建用于生成PDB的XML文件

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

Total System Global Area 2772574208 bytes
Fixed Size 2292240 bytes
Variable Size 2533361136 bytes
Database Buffers 218103808 bytes
Redo Buffers 18817024 bytes
Database mounted.

SQL> alter database open read only;
Database altered.

SQL> exec dbms_pdb.describe(pdb_descr_file => \'/home/oracle/woo_ora11g.xml\');
PL/SQL procedure successfully completed.

SQL> host ls -rtl /home/oracle/woo*.xml
-rw-r--r-- 1 oracle oinstall 4147 Nov 27 19:17 /home/oracle/woo_ora11g.xml

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

四、检查升级后的数据库是否适合以PDB的方式插入到CDB中

SQL> set serveroutput on;
SQL> declare
  2         compat boolean := FALSE;
  3 begin
  4         compat := dbms_pdb.check_plug_compatibility(pdb_descr_file => \'/home/oracle/woo_ora11g.xml\');
  5     if compat
  6     then
  7         dbms_output.put_line(\'YES\');
  8     else
  9         dbms_output.put_line(\'No\');
 10     end if;
 11 end;
 12 /

No

PL/SQL procedure successfully completed.

   因为是第一次插入，所以执行结果显示为NO，可以忽略继续插入。

五、创建CDB数据库
   5.1 执行dbca创建cdb数据库

5.2 指定需要创建的cdb数据库名称

     5.3 创建CDB前检查

    5.4 Summar 点击Finish开始创建

    5.5  现在正在开始创建

  5.6 至此已经创建完成，告诉我们CDB数据库的信息

   5.7 点击Close 关闭创建页面

六、查看当前pdb信息

[oracle@db01 ~]$ export ORACLE_SID=woo12c
SQL> show pdbs;

    CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED READ ONLY NO
         3 PDB01 READ WRITE NO

SQL> select con_id,dbid,NAME,OPEN_MODE from v$pdbs;

    CON_ID DBID NAME OPEN_MODE
---------- ---------- ------------------------------ ----------
         2 4107385256 PDB$SEED READ ONLY
         3 3926295770 PDB01 READ WRITE

七、将non-cdb数据库插入到cdb中成为一个pdb

SQL> CREATE PLUGGABLE DATABASE woo_ora11g USING \'/home/oracle/woo_ora11g.xml\';
Pluggable database created.

八、查看alert日志相关信息
     将Non-CDB插入到CDB中成为一个PDB输出的Alert 日志。

SQL> show pdbs

    CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED READ ONLY NO
         3 PDB01 READ WRITE NO
         4 WOO_ORA11G MOUNTED
SQL> select con_id,dbid,NAME,OPEN_MODE from v$pdbs;

    CON_ID DBID NAME OPEN_MODE
---------- ---------- ------------------------------ ----------
         2 4107385256 PDB$SEED READ ONLY
         3 3926295770 PDB01 READ WRITE
         4 4199532651 WOO_ORA11G MOUNTED

第一次no-cdb plug cdb是mount状态，需要将其open;
SQL> alter pluggable database open;
Pluggable database altered.

SQL> show pdbs;

    CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED READ ONLY NO
         3 PDB01 MOUNTED
         4 WOO_ORA11G READ WRITE YES

插入完成之后需要执行noncdb_to_pdb脚本，修复原non-cdb 和新的pdb不兼容的问题：

十、执行noncdb_pdb脚本

SQL> alter session set container=WOO_ORA11G;
Session altered.

SQL> @$ORACLE_HOME/rdbms/admin/noncdb_to_pdb.sql

………

#### 遇到warning,脚本会自动忽略错误，继续执行。在最后脚本编译的时候会修复这些问题。

更新完之后需要同步pdb信息
SQL> show pdbs

    CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
         4 WOO_ORA11G MOUNTED
SQL> alter pluggable database open restricted;

Pluggable database altered.

SQL> show pdbs

    CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
         4 WOO_ORA11G READ WRITE YES
SQL> exec dbms_pdb.sync_pdb();

PL/SQL procedure successfully completed.

SQL> alter pluggable database close immediate;

Pluggable database altered.

SQL> alter pluggable database open;

Pluggable database altered.

十一、至此no-cdb plug to cdb 成功

SQL> show pdbs;

    CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED READ ONLY NO
         3 PDB01 MOUNTED
         4 WOO_ORA11G READ WRITE NO
SQL>