USERS表空间在线损坏（RMAN修复）

[oracle@station oracle]$ rman target /

Recovery Manager: Release 10.2.0.1.0 - Production on Fri Jun 8 12:56:11 2012

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

connected to target database: ORCL (DBID=1312694260)

RMAN> list backup;                                     ---查看所有RMAN备份文件


using target database control file instead of recovery catalog

RMAN> backup tablespace users;                         ---备份users表空间

Starting backup at 08-JUN-12
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=140 devtype=DISK
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00004 name=/u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_7wnthzto_.dbf
channel ORA_DISK_1: starting piece 1 at 08-JUN-12
channel ORA_DISK_1: finished piece 1 at 08-JUN-12
piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2012_06_08/o1_mf_nnndf_TAG20120608T125639_7x4cp7c3_.bkp tag=TAG20120608T125639 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 08-JUN-12

RMAN> list backup;                                    ---再次查看R所有MAN备份文件


List of Backup Sets
===================

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
1       Full    2.10M      DISK        00:00:00     08-JUN-12      
        BP Key: 1   Status: AVAILABLE  Compressed: NO  Tag: TAG20120608T125639
        Piece Name: /u01/app/oracle/flash_recovery_area/ORCL/backupset/2012_06_08/o1_mf_nnndf_TAG20120608T125639_7x4cp7c3_.bkp
  List of Datafiles in backup set 1
  File LV Type Ckp SCN    Ckp Time  Name
  ---- -- ---- ---------- --------- ----
  4       Full 888677     08-JUN-12 /u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_7wnthzto_.dbf


RMAN> exit


Recovery Manager complete.
[oracle@station oracle]$ rm -rf ./oradata/ORCL/datafile/*users*  ----手工删除users在线表空间
[oracle@station oracle]$ rman target /                           ----进入RMAN管理器

Recovery Manager: Release 10.2.0.1.0 - Production on Fri Jun 8 12:59:15 2012

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

connected to target database: ORCL (DBID=1312694260)

RMAN> sql "alter database datafile 4 offline";                   ----通过RMAN下线users表空间

using target database control file instead of recovery catalog
sql statement: alter database datafile 4 offline

RMAN> restore datafile 4;                                        ----还原users表空间

Starting restore at 08-JUN-12
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=137 devtype=DISK

channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00004 to /u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_7wnthzto_.dbf
channel ORA_DISK_1: reading from backup piece /u01/app/oracle/flash_recovery_area/ORCL/backupset/2012_06_08/o1_mf_nnndf_TAG20120608T125639_7x4cp7c3_.bkp
channel ORA_DISK_1: restored backup piece 1
piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2012_06_08/o1_mf_nnndf_TAG20120608T125639_7x4cp7c3_.bkp tag=TAG20120608T125639
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 08-JUN-12


RMAN> recover datafile 4;                                        ----修复users表空间

Starting recover at 08-JUN-12
using channel ORA_DISK_1

starting media recovery
media recovery complete, elapsed time: 00:00:02

Finished recover at 08-JUN-12

RMAN> sql "alter database datafile 4 online";                    ----对修复完的users表空间进行上线

sql statement: alter database datafile 4 online


RMAN> quit


Recovery Manager complete.
[oracle@station oracle]$ sqlplus /nolog

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 8 13:04:49 2012

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

SQL> conn /as sysdba                                 
Connected.
SQL> select * from hr.strom;                                  ----查看是否有之前创建的表

         A
----------
         1