跳过rman坏块进行数据恢复

在有些情况下,我们仅有一份rman备份，而这个时候rman 备份有出现坏块，使得我们的还原/恢复工作无法继续下去，导致数据大量丢失。我们可以通过设置event 19548/19549来跳过坏块,最大程度抢救数据。

rman备份数据文件

    
    
    
    
     
     
     
     C:\Users\XIFENFEI>rman target / 
     
     
     
     Recovery Manager: Release 11.2.0.3.0 - Production on Thu Jun 6 20:31:19 2013 
     
     
     
     Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved. 
     
     
     
     connected to target database: XIFENFEI (DBID=1422012639) 
     
     
     
     RMAN> backup tablespace users format 'f:/users_bak.rman'; 
     
     
     
     Starting backup at 06-JUN-13 
     
     
     
     using target database control file instead of recovery catalog 
     
     
     
     allocated channel: ORA_DISK_1 
     
     
     
     channel ORA_DISK_1: SID=197 device type=DISK
     
     
     
     channel ORA_DISK_1: starting full datafile backup set 
     
     
     
     channel ORA_DISK_1: specifying datafile(s) in backup set 
     
     
     
     input datafile file number=00004name=E:\ORACLE\ORADATA\XIFENFEI\USERS01.DBF 
     
     
     
     channel ORA_DISK_1: starting piece 1 at 06-JUN-13 
     
     
     
     channel ORA_DISK_1: finished piece 1 at 06-JUN-13 
     
     
     
     piece handle=F:\USERS_BAK.RMAN tag=TAG20130606T203154comment=NONE
     
     
     
     channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03 
     
     
     
     Finished backup at 06-JUN-13

切换归档日志

    
    
    
    
     
     
     
     SQL> alter system switch logfile; 
     
     
     
     System altered. 
     
     
     
     SQL> / 
     
     
     
     System altered. 
     
     
     
     SQL> / 
     
     
     
     System altered. 
     
     
     
     SQL> archive log list; 
     
     
     
     Database log mode              Archive Mode 
     
     
     
     Automatic archival             Enabled 
     
     
     
     Archive destination            E:\oracle\product\11.2.0\dbhome_1\RDBMS 
     
     
     
     Oldest online log sequence     95 
     
     
     
     Next log sequence to archive   97 
     
     
     
     Current log sequence           97

重命名数据文件

    
    
    
    
     
     
     
     SQL> shutdown immediate 
     
     
     
     Database closed. 
     
     
     
     Database dismounted. 
     
     
     
     ORACLE instance shut down. 
     
     
     
     -------------------------------------- 
     
     
     
     e:\oracle\oradata\XIFENFEI>move USERS01.DBF USERS01_bak.DBF 
     
     
     
     移动了         1 个文件。 
     
     
     
     -------------------------------------- 
     
     
     
     SQL> startup 
     
     
     
     ORACLE instance started. 
     
     
     
     Total System Global Area  418484224 bytes 
     
     
     
     Fixed Size                  1385052 bytes 
     
     
     
     Variable Size             327159204 bytes 
     
     
     
     Database Buffers           83886080 bytes 
     
     
     
     Redo Buffers                6053888 bytes 
     
     
     
     Database mounted. 
     
     
     
     ORA-01157: cannot identify/lock data file 4 - see DBWR trace file 
     
     
     
     ORA-01110: data file 4: 'E:\ORACLE\ORADATA\XIFENFEI\USERS01.DBF'

1 2 3 4 下一页>>

内容导航

第 1 页：rman备份数据文件	第 2 页：破坏备份集
第 3 页：观察已经正常还原出来数据文件情况	第 4 页：rman还原数据文件

原文：跳过rman坏块进行数据恢复(1) 返回操作系统首页

跳过rman坏块进行数据恢复

你可能感兴趣的:(oracle,数据恢复,database,Copyright,connected)