Oracle11g利用泠备份恢复standby库-mysql教程

Oracle 11g 利用泠备份恢复standby库 1 开始在备库上进行泠备份先查好控制文件、redo、undo文件、数据文件的路径 1.1 先关闭主库

Oracle 11g 利用泠备份恢复standby库

1 开始在备库上进行泠备份
先查好控制文件、redo、undo文件、数据文件的路径

1.1 先关闭主库的归档日志传输
SQL> ALTER system SETlog_archive_dest_state_2 ='DEFER';

System altered.

SQL>

1.2 先关闭standby库
SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL>

SQL>

1.3 开始进行泠备份
#建立一个泠备份目录

mkdir /data/oracle_cold/

开始泠备份控制文件

cp /data/oracle_cold/

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

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

开始泠备份redo、undo文件

mkdir orcl_2

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

开始泠备份数据文件

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

2开始使用泠备份进行db恢复
2.1，停止掉standby库
SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL>

SQL>

2.2，将泠备中的控制文件覆盖当前的控制文件
查看原来的控制文件目录

[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>

开始复制覆盖

[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，将泠备中的redo、undo文件覆盖到以前的目录中
查看以前的redo、undo文件路径

[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>

开始覆盖redo、undo文件

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

[oracle@localhost oracle_cold]$

2.4，，将泠备中的数据文件覆盖到以前的目录中
查看以前的数据文件目录

[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]$

开始覆盖以前的数据文件目录

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

[oracle@localhost oracle_cold]$

2.5 启动数据库
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 去主库上开启归档日志传输
SQL> ALTER system SET log_archive_dest_state_2='enable';

System altered.

SQL>

2.7 然后备库启动应用
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>

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