如何从备份集中恢复归档日志

这一类的操作是因为丢失了所有的控制文件，而RMAN的备份信息又存储在控制文件之中。

所以只能使用DMBS_BACKUP_RESTORE从备份集中恢复数据文件、归档日志等进行恢复。

本例示范如何恢复归档日志文件，恢复数据文件的例子参考:应对RMAN-06026错误，使用dbms_backup_restore进行恢复

SQL> 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.restoreSetArchivedLog(destination=>'D:\oracle\oradata\javis\archive');
7   sys.dbms_backup_restore.restoreArchivedLog(thread=>1,sequence=>6);
8   sys.dbms_backup_restore.restoreBackupPiece(done=>done,handle=>'D:\oracle\oradata\javis\bak\ARCH_javis_20050702_7',params=>null);
9   sys.dbms_backup_restore.deviceDeallocate;
10  END;
11  /

PL/SQL procedure successfully completed.

执行不完全恢复以后，resetlogs打开数据库:

SQL> recover database using backup controlfile until cancel;
ORA-00279: change 459405 generated at 07/02/2005 23:58:32 needed for thread1
ORA-00289: suggestion : D:\ORACLE\ORADATA\JAVIS\ARCHIVE\ARC16.ARC
ORA-00280: change 459405 for thread 1 is in sequence #6

Specify log: {=suggested | filename | AUTO | CANCEL}

ORA-00279: change 459428 generated at 07/02/2005 23:59:32 needed for thread1
ORA-00289: suggestion : D:\ORACLE\ORADATA\JAVIS\ARCHIVE\ARC17.ARC
ORA-00280: change 459428 for thread 1 is in sequence #7
ORA-00278: log file 'D:\ORACLE\ORADATA\JAVIS\ARCHIVE\ARC16.ARC' no longer needed for this recovery

Specify log: {=suggested | filename | AUTO | CANCEL}

ORA-00279: change 459516 generated at 07/03/2005 00:02:40 needed for thread1
ORA-00289: suggestion : D:\ORACLE\ORADATA\JAVIS\ARCHIVE\ARC18.ARC
ORA-00280: change 459516 for thread 1 is in sequence #8
ORA-00278: log file 'D:\ORACLE\ORADATA\JAVIS\ARCHIVE\ARC17.ARC' no longer needed for this recovery

Specify log: {=suggested | filename | AUTO | CANCEL}

ORA-00328: archived log ends at change 456840, need later change 459516
ORA-00334: archived log: 'D:\ORACLE\ORADATA\JAVIS\ARCHIVE\ARC18.ARC'

SQL> recover database using backup controlfile until cancel;
ORA-00279: change 459516 generated at 07/03/2005 00:02:40 needed for thread1
ORA-00289: suggestion : D:\ORACLE\ORADATA\JAVIS\ARCHIVE\ARC18.ARC
ORA-00280: change 459516 for thread 1 is in sequence #8

Specify log: {=suggested | filename | AUTO | CANCEL}
cancel
Media recovery cancelled.
SQL> alter database open resetlogs;

Database altered.

SQL>