Oracle控制文件备份恢复 resetlogs方式

Oracle控制文件备份恢复 resetlogs方式

alter databasebackup controfile to trace as '/bk/col.sql';

一致性停库破坏日志文件和控制文件

启动数据库

SQL> startup

Oracle instancestarted.

 

Total SystemGlobal Area  314572800 bytes

Fixed Size                  1219136 bytes

VariableSize             113247680 bytes

DatabaseBuffers          192937984 bytes

RedoBuffers                7168000 bytes

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

因为没有控制文件所以会出205错误

我们根据备份的控制文件信息重新创建控制文件

CREATECONTROLFILE REUSE DATABASE "ORCL2" RESETLOGS  ARCHIVELOG

    MAXLOGFILES 16

    MAXLOGMEMBERS 3

    MAXDATAFILES 100

    MAXINSTANCES 8

    MAXLOGHISTORY 292

LOGFILE

  GROUP 1'/u01/tiger/oradata/orcl2/redo01.log' SIZE 50M,

  GROUP 2'/u01/tiger/oradata/orcl2/redo02.log' SIZE 50M,

  GROUP 3'/u01/tiger/oradata/orcl2/redo03.log' SIZE 50M

DATAFILE

  '/u01/tiger/oradata/orcl2/system01.dbf',

  '/u01/tiger/oradata/orcl2/tiger.dbf',

  '/u01/tiger/oradata/orcl2/sysaux01.dbf',

  '/u01/tiger/oradata/orcl2/users01.dbf',

  '/u01/tiger/oradata/orcl2/undotbs02.dbf',

  '/u01/tiger/oradata/orcl2/undotbs01',

  '/u01/tiger/oradata/orcl2/tiger01.dbf'

CHARACTER SETZHS16GBK

;

因为之前也没有了redo日志文件所以重启数据库的时候用resetlogs参数

alter databaseopen resetlogs