12c多租戶管理六（克隆遠程non-cdb建立本地pdb）

        經過non-cdb數據庫建立pdb

目錄結構

1、說明

2、測試環境

3、建立準備

4、啓動非cdb庫到read only狀態

5、建立新的pdb

6、在non-cdb上使用DBMS_PDB包建立pdb

1、說明

1.     從 12c 版本 1 開始能夠經過克隆一個非 cdb 得數據庫建立 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後使用NON$CDB表明非cdb庫。

   

2、測試環境

一、非cdb信息 數據庫名cdb 文件名路徑 /opt/oracle/oradata/cdb/

    

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

NAME    CDB    OPEN_MODE

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

CDB        NO     READ WRITE

二、cdb信息 主機 192.168.5.40 端口1521  cdb: mycdb  

    pdb數據文件存放路徑 /opt/oracle/oradata/mycdb/ 

3、建立準備 

一、在非cdb中建立連接用戶

SQL> create user conadmin identified by dhhzdhhz;

User created.

grant dba to conadmin;

grant  CREATE PLUGGABLE DATABASE to conadmin;

二、建立連接

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

4、啓動非cdb庫到read only狀態

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

5、建立新的pdb

一、執行建立語句

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

二、切換容器到新建立的pdb

alter session set container=mypdb5;

三、執行noncdb_to_pdb.sql腳本

@?/rdbms/admin/noncdb_to_pdb.sql

四、打開新建立的pdb

SQL> alter pluggable database mypdb5 open;

6、在non-cdb上使用DBMS_PDB包建立pdb

6.一、說明

   一、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

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

6.二、確保 non-cdb 處於一致性狀態，並從新打開數據庫到只讀狀態

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;

6.三、以 sysdba 用戶登錄 non-cdb 數據庫執行DBMS_PDB.DEXCRIBE過程生成非cdb 數據庫的xml 文件

BEGIN

DBMS_PDB.DESCRIBE(

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

END;

/

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

6.四、在cdb機器上建立非cdb的數據文件路徑並拷貝xml和數據文件

[oracle@oracle18c1 backup]$ scp ncdb.xml oracle@192.168.5.40:/backup/

oracle@192.168.5.41's password: 

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

[oracle@oracle18c1 backup]$ scp -r /opt/oracle/oradata/cdb/* oracle@192.168.5.40:/opt/oracle/oradata/cdb/

oracle@192.168.5.40'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    

6.五、在cdb上運行 兼容性檢測(DBMS_PDB.CHECK_PLUG_COMPATIBILITY)  

一、注意事項 

  pdb_descr_file:設置XML元數據文件的完整路徑。

  pdb_name:指定新PDB名字

二、檢測語句

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;

/

三、若是返回結果爲no 則查詢語句糾正錯誤

select con_id,cause,message from pdb_plug_in_violations;

6.六、建立新的pdb

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

6.七、執行noncdb_to_pdb.sql腳本

@?/rdbms/admin/noncdb_to_pdb.sql

6.八、打開新建立的pdb

 alter pluggable database mypdb5 open;