Oracle 11g 利用泠備份恢復standby庫

1 開始在備庫上進行泠備份

先查好控制文件、redo、undo文件、數據文件的路徑

1.1 先關閉主庫的歸檔日志傳輸

SQL> ALTER system SETlog_archive_dest_state_2 ='DEFER';

System altered.

SQL>

1.2 先關閉standby庫

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL>

SQL>

1.3 開始進行泠備份

#建立一個泠備份目錄

mkdir /data/oracle_cold/

開始泠備份控制文件

cp /data/oracle_cold/

cp /home/oradata/orcl/control01.ctlcontrol01.ctl

cp /oracle/app/oracle/flash_recovery_area/orcl/control02.ctlcontrol02.ctl

開始泠備份redo、undo文件

mkdir orcl_2

cp -r /home/oradata/orcl/*.log orcl_2

開始泠備份數據文件

cp -r /home/oradata/orcl/*.dbf orcl_2

2開始使用泠備份進行db恢復

2.1，停止掉standby庫

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL>

SQL>

2.2，將泠備中的控制文件覆蓋當前的控制文件

查看原來的控制文件目錄

[oracle@localhost oracle_cold]$ morecontrolfile.log

SQL> SELECT name FROMv$controlfile;

NAME

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

/home/oradata/orcl/control01.ctl

/oracle/app/oracle/flash_recovery_area/orcl/control02.ctl

SQL>

開始復制覆蓋

[oracle@localhost oracle_cold]$ cpcontrol02.ctl /oracle/app/oracle/flash_recovery_area/orcl/control02.ctl

[oracle@localhost oracle_cold]$ cpcontrol01.ctl /home/oradata/orcl/control01.ctl

[oracle@localhost oracle_cold]$

2.3，將泠備中的redo、undo文件覆蓋到以前的目錄中

查看以前的redo、undo文件路徑

[oracle@localhost oracle_cold]$ morelogfile.log

SQL> select member from v$logfile;

MEMBER

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

/home/oradata/orcl/redo03.log

/home/oradata/orcl/redo02.log

/home/oradata/orcl/redo01.log

/home/oradata/orcl/redo_dg_01.log

/home/oradata/orcl/redo_dg_02.log

/home/oradata/orcl/redo_dg_03.log

6 rows selected.

SQL>

開始覆蓋redo、undo文件

[oracle@localhost oracle_cold]$ cp orcl_2/*.log/home/oradata/orcl/

[oracle@localhost oracle_cold]$

2.4，將泠備中的數據文件覆蓋到以前的目錄中

查看以前的數據文件目錄

[oracle@localhost oracle_cold]$ moredatafile.log

SELECT name FROM v$datafile;

1 /home/oradata/orcl/system01.dbf

2 /home/oradata/orcl/sysaux01.dbf

3 /home/oradata/orcl/undotbs01.dbf

4 /home/oradata/orcl/users01.dbf

5 /home/oradata/orcl/orclk01.dbf

6 /home/oradata/orcl/plas01.dbf

7 /home/oradata/orcl/pl01.dbf

8 /home/oradata/orcl/help01.dbf

9 /home/oradata/orcl/adobelc01.dbf

10 /home/oradata/orcl/sms01.dbf

11 /home/oradata/orcl/plcrm01.dbf

[oracle@localhost oracle_cold]$

開始覆蓋以前的數據文件目錄

[oracle@localhost oracle_cold]$ cp orcl_2/*.dbf/home/oradata/orcl/

[oracle@localhost oracle_cold]$

2.5 啟動數據庫

SQL> startup

ORACLE instance started.

Total System Global Area 5344731136 bytes

Fixed Size 2213136 bytes

Variable Size 3355446000 bytes

Database Buffers 1946157056 bytes

Redo Buffers 40914944 bytes

Database mounted.

Database opened.

SQL>

2.6 去主庫上開啟歸檔日志傳輸

SQL> ALTER system SET log_archive_dest_state_2='enable';

System altered.

SQL>

2.7 然后備庫啟動應用

select sequence#,applied fromv$archived_log order by sequence# asc;

SQL> alter database recovermanagedstandby database disconnect from session;

Database altered.

SQL>

SQL> select open_modefromv$database;

OPEN_MODE

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

READ ONLY WITH APPLY

SQL>

總結

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