12c多租户管理六（克隆远程non-cdb创建本地pdb）

        通过non-cdb数据库创建pdb

目录结构

一、说明

二、测试环境

三、创建准备

四、启动非cdb库到read only状态

五、创建新的pdb

六、在non-cdb上使用DBMS_PDB包创建pdb

一、说明

1.     从 12c 版本 1 开始可以通过克隆一个非 cdb 得数据库创建 pdb

2.    Both the CDB and the non-CDB must be running Oracle Database 12c Release 1 (12.1.0.2) or later

3.    If your current non-CDB uses an Oracle Database release before Oracle Database 12c

      Release 1 (12.1.0.2), then you must upgrade the non-CDB to Oracle Database 12c Release 1 (12.1.0.2)

      to use this technique

4.    Use Oracle Data Pump export/import（You export the data from the non-CDB and import it into a PDB）

5.    Use GoldenGate replication.

6.    Use the DBMS_PDB package to generate an XML metadata file. The XML metadata file describes the database files of the non-CDB 

      so that you can plug it into a CDB

7.    from后使用NON$CDB代表非cdb库。

   

二、测试环境

1、非cdb信息 数据库名cdb 文件名路径 /opt/oracle/oradata/cdb/

    

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

NAME    CDB    OPEN_MODE

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

CDB        NO     READ WRITE

2、cdb信息 主机 192.168.5.40 端口1521  cdb: mycdb  

    pdb数据文件存放路径 /opt/oracle/oradata/mycdb/ 

三、创建准备 

1、在非cdb中创建链接用户

SQL> create user conadmin identified by dhhzdhhz;

User created.

grant dba to conadmin;

grant  CREATE PLUGGABLE DATABASE to conadmin;

2、创建链接

SQL> create public database link  admincdb  connect to conadmin identified by dhhzdhhz using '192.168.5.41/cdb';

Database link created.

SQL> select * from dual@admincdb;

D

-

X

四、启动非cdb库到read only状态

SQL> startup mount;

ORACLE instance started.

Total System Global Area 1073740616 bytes

Fixed Size     8665928 bytes

Variable Size   671088640 bytes

Database Buffers   385875968 bytes

Redo Buffers     8110080 bytes

Database mounted.

SQL> alter database open read only;

Database altered.

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

NAME   CDB OPEN_MODE

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

CDB   NO  READ ONLY

五、创建新的pdb

1、执行创建语句

SQL> CREATE PLUGGABLE DATABASE mypdb5 FROM NON$CDB@admincdb FILE_NAME_CONVERT=('/opt/oracle/oradata/cdb/','/opt/oracle/oradata/mycdb/mypdb5/');

Pluggable database created.

SQL> show pdbs;

    CON_ID CON_NAME   OPEN MODE  RESTRICTED

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

2 PDB$SEED         READ ONLY  NO

3 MYPDB1         READ WRITE NO

4 MYPDB2         READ WRITE NO

5 YOUPDB         MOUNTED

6 MYPDB3         READ WRITE NO

7 MYPDB4         READ WRITE NO

8 MYPDB5         MOUNTED

2、切换容器到新创建的pdb

alter session set container=mypdb5;

3、执行noncdb_to_pdb.sql脚本

@?/rdbms/admin/noncdb_to_pdb.sql

4、打开新创建的pdb

SQL> alter pluggable database mypdb5 open;

六、在non-cdb上使用DBMS_PDB包创建pdb

6.1、说明

   1、You run the DBMS_PDB.DESCRIBE procedure on the non-CDB to generate the XML file

that describes the database files of the non-CDB

   2、To use this technique, the non-CDB must be an Oracle Database 12c non-CDB

6.2、确保 non-cdb 处于一致性状态，并重新打开数据库到只读状态

SQL> startup mount;

ORACLE instance started.

Total System Global Area 1073740616 bytes

Fixed Size     8665928 bytes

Variable Size   671088640 bytes

Database Buffers   385875968 bytes

Redo Buffers     8110080 bytes

Database mounted.

SQL> alter database open read only;

6.3、以 sysdba 用户登陆 non-cdb 数据库执行DBMS_PDB.DEXCRIBE过程生成非cdb 数据库的xml 文件

BEGIN

DBMS_PDB.DESCRIBE(

pdb_descr_file => '/backup/ncdb.xml');

END;

/

exec DBMS_PDB.DESCRIBE('/backup/ncdb.xml');

6.4、在cdb机器上创建非cdb的数据文件路径并拷贝xml和数据文件

[oracle@oracle18c1 backup]$ scp ncdb.xml [email protected]:/backup/

[email protected]'s password: 

ncdb.xml                                                                                   100% 6792     3.2MB/s   00:00  

[oracle@oracle18c1 backup]$ scp -r /opt/oracle/oradata/cdb/* [email protected]:/opt/oracle/oradata/cdb/

[email protected]'s password: 

control01.ctl                                                                              100%   18MB  44.0MB/s   00:00    

redo01.log                                                                                 100%  100MB  50.0MB/s   00:02    

redo02.log                                                                                 100%  100MB  33.3MB/s   00:03    

redo03.log                                                                                 100%  100MB  50.0MB/s   00:02    

sysaux01.dbf                                                                               100%  550MB  30.5MB/s   00:18    

system01.dbf                                                                               100%  700MB  34.9MB/s   00:20    

temp01.dbf                                                                                 100%   20MB  33.9MB/s   00:00    

undotbs01.dbf                                                                              100%  220MB  44.0MB/s   00:05    

users01.dbf                                                                                100%  500MB  38.5MB/s   00:13    

usertbs01.dbf                                                                              100%  200MB  33.3MB/s   00:06    

6.5、在cdb上运行 兼容性检测(DBMS_PDB.CHECK_PLUG_COMPATIBILITY)  

1、注意事项 

  pdb_descr_file:设置XML元数据文件的完整路径。

  pdb_name:指定新PDB名字

2、检测语句

set serveroutput on

declare

compatible constant varchar2(3) :=

case dbms_pdb.check_plug_compatibility(

pdb_descr_file => '/backup/ncdb.xml',

pdb_name => 'mypdb5')

when true then 'yes'

else 'no'

end;

begin

dbms_output.put_line(compatible);

end;

/

3、如果返回结果为no 则查询语句纠正错误

select con_id,cause,message from pdb_plug_in_violations;

6.6、创建新的pdb

CREATE PLUGGABLE DATABASE mypdb5 USING '/backup/ncdb.xml' NOCOPY  tempfile reuse;

6.7、执行noncdb_to_pdb.sql脚本

@?/rdbms/admin/noncdb_to_pdb.sql

6.8、打开新创建的pdb

 alter pluggable database mypdb5 open;