利用dbms_backup_restore函数对控制文件的丢失的恢复

 DECLARE

devtype varchar2(256);

done boolean;

BEGIN

devtype:=sys.dbms_backup_restore.deviceAllocate(type=>'',ident=>'T1');

sys.dbms_backup_restore.restoreSetDatafile;

sys.dbms_backup_restore.restoreControlfileTo(cfname=>'/opt/oracle/huang.ctl');

sys.dbms_backup_restore.restoreBackupPiece(done=>done,handle=>'/opt/oracle/flash_recovery_area/ORCL/backupset/2010_04_12/o1_mf_ncsnf_TAG20100412T214915_5w698bcg_.bkp', params=>null);

sys.dbms_backup_restore.deviceDeallocate;

END;

 

cfname=>'/opt/oracle/huang.ct表示生成的控制文件。

handle=>'/opt/oracle/flash_recovery_area/ORCL/backupset/2010_04_12/o1_mf_ncsnf_TAG20100412T214915_5w698bcg_.bkp

这个表示的是含有控制文件的RMAN备份片。

 

 

SQL> get /tmp/1.sql

  1  DECLARE

  2  devtype varchar2(256);

  3  done boolean;

  4  BEGIN

  5  devtype:=sys.dbms_backup_restore.deviceAllocate(type=>'',ident=>'T1');

  6  sys.dbms_backup_restore.restoreSetDatafile;

  7  sys.dbms_backup_restore.restoreControlfileTo(cfname=>'/opt/oracle/huang.ctl');

  8  sys.dbms_backup_restore.restoreBackupPiece(done=>done,handle=>'/opt/oracle/flash_recovery_area/ORCL/backupset/2010_04_12/o1_mf_ncsnf_TAG20100412T214915_5w698bcg_.bkp', params=>null);

  9  sys.dbms_backup_restore.deviceDeallocate;

 10* END;

SQL> /

 

PL/SQL procedure successfully completed.

查看是否已经成功生成此文件。

SQL> !ls /opt/oracle/huang.ctl;

/opt/oracle/huang.ctl

在把/opt/oracle/huang.ctl拷贝到原来的控制文件去就可以了。