模拟控制文件受损的修复办法

[oracle@dbserver sztech1]$ pwd

/oracle/app/oracle/oradata/sztech1

[oracle@dbserver sztech1]$ ls

example01.dbf redo02.log sysaux01.dbf temp01.dbf users01.dbf

redo01.log redo03.log system01.dbf undotbs01.dbf

执行破坏动作，将一个控制文件删掉。

[oracle@dbserver sztech1]$ rm -f control01.ctl

重启后就会出错，如：

SQL> startup nomount

ORACLE instance started.

Total System Global Area 313860096 bytes

Fixed Size 1336232 bytes

Variable Size 234884184 bytes

Database Buffers 71303168 bytes

Redo Buffers 6336512 bytes

SQL> 1* alter database archivelog

SQL> alter database mount;

alter database mount

*

ERROR at line 1:

ORA-00205: error in identifying control file, check alert log for more info

解决办法：

将另一个控制文件复制到丢失的控制文件目录下

[oracle@dbserver sztech1]$ pwd

/oracle/app/oracle/flash_recovery_area/sztech1

[oracle@dbserver sztech1]$ cp control02.ctl

/oracle/app/oracle/oradata/sztech1/control01.ctl

[oracle@dbserver sztech1]$ cd /oracle/app/oracle/oradata/sztech1

[oracle@dbserver sztech1]$ ls

control01.ctl redo01.log redo03.log system01.dbf undotbs01.dbf

example01.dbf redo02.log sysaux01.dbf temp01.dbf users01.dbf

这时候就能执行成功了

SQL> r

1* alter database mount

Database altered.

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