物理DG从库损坏后的重建

由于是重建,原来DG环境中被重建的物理从库中的数据文件，日志文件，dump文件等都可以删除，切记原来的参数文件和相应目录一定要保存。

主库做standby控制文件和数据库的全备份

[Oracle@localhost rman_recover]$ rman target /

备份控制文件

RMAN> backup current controlfile for standby format '/u01/rman_recover/ctlfile.bak';

备份整库

RMAN> backup database format '/u01/rman_recover/%full_backup_%T_%t.bak';

备库上查找控制文件路径：

SQL> select name from v$controlfile;

NAME

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

/u01/app/oracle/oradata/orcl_s/control01.ctl

/u01/app/oracle/oradata/orcl_s/control02.ctl

/u01/app/oracle/oradata/orcl_s/control03.ctl

SQL> shutdown abort

ORACLE instance shut down.

copy主库的备份到备库

[oracle@localhost ~]$ scp 10.37.11.11:/u01/rman_recover/*.bak /u01/rman_recover/
 
[email protected]'s password: 

0ull_backup_20140522_848228743.b 100% 7072KB  6.9MB/s  00:00   

7ull_backup_20140522_848228595.b 100% 1002MB  11.9MB/s  01:24   

ctlfile.bak                      100% 7040KB  6.9MB/s  00:01   

将控制文件copy到原配置中：

[oracle@localhost rman_recover]$ cp ctlfile.bak /u01/app/oracle/oradata/orcl_s/control01.ctl
 
[oracle@localhost rman_recover]$ cp ctlfile.bak /u01/app/oracle/ora

data/orcl_s/control02.ctl

[oracle@localhost rman_recover]$ cp ctlfile.bak /u01/app/oracle/ora

data/orcl_s/control03.ctl

启动备库实例：

SQL> startup nomount

ORACLE instance started.

Total System Global Area  167772160 bytes

Fixed Size                  1218316 bytes

Variable Size              75499764 bytes

Database Buffers          88080384 bytes

Redo Buffers                2973696 bytes