只读user表空间损坏(RMAN修复)

---只读user表空间损坏

--------------------------------模拟破坏只读user表空间损坏-----------------------------------------------------------------
[oracle@station ~]$ sqlplus /nolog

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 8 12:58:58 2012

SQL> conn /as sysdba
Connected.

SQL> create table hr.strom (a number) tablespace users; ----在HR用户下创建strom表

Table created.

SQL> alter system switch logfile;

System altered.

SQL> insert into hr.strom values(1);

1 row created.

SQL> alter system switch logfile;

System altered.

SQL> commit;

Commit complete.

SQL> insert into hr.strom values(2);

1 row created.

SQL> alter system switch logfile;

System altered.

SQL> commit;

Commit complete.

SQL> alter tablespace users read only;

Tablespace altered.

SQL> !
[oracle@station ~]$ rman target /

Recovery Manager: Release 10.2.0.1.0 - Production on Fri Jun 8 13:05:25 2012

connected to target database: ORCL (DBID=1312694260)

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

Starting backup at 08-JUN-12
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=142 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_TAG20120608T130546_7x4d7bvs_.bkp tag=TAG20120608T130546 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 08-JUN-12

RMAN> quit

Recovery Manager complete.
[oracle@station ~]$ rm -rf /u01/app/oracle/oradata/ORCL/datafile/*users*
[oracle@station ~]$ sqlplus /nolog

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 8 13:08:05 2012

SQL> conn /as sysdba
Connected.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area 281018368 bytes
Fixed Size                  2020192 bytes
Variable Size             130026656 bytes
Database Buffers          146800640 bytes
Redo Buffers                2170880 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 4 - see DBWR trace file
ORA-01110: data file 4:
'/u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_7wnthzto_.dbf'

--------------------------------模拟破坏只读user表空间损坏-----------------------------------------------------------------

SQL> !
[oracle@station ~]$ rman target /

Recovery Manager: Release 10.2.0.1.0 - Production on Fri Jun 8 13:09:24 2012

connected to target database: ORCL (DBID=1312694260, not open)

RMAN> list backup of tablespace users;

using target database control file instead of recovery catalog

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

BS Key Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
1       Full    2.04M      DISK        00:00:01     08-JUN-12
        BP Key: 1   Status: AVAILABLE Compressed: NO Tag: TAG20120608T130546
        Piece Name: /u01/app/oracle/flash_recovery_area/ORCL/backupset/2012_06_08/o1_mf_nnndf_TAG20120608T130546_7x4d7bvs_.bkp
List of Datafiles in backup set 1
File LV Type Ckp SCN    Ckp Time Name
---- -- ---- ---------- --------- ----
4       Full 888842     08-JUN-12 /u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_7wnthzto_.dbf

RMAN> run { restore tablespace users; -----还原，修复users表空间
2> recover tablespace users;
3> }

Starting restore at 08-JUN-12
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 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_TAG20120608T130546_7x4d7bvs_.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_TAG20120608T130546_7x4d7bvs_.bkp tag=TAG20120608T130546
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 08-JUN-12

Starting recover at 08-JUN-12
using channel ORA_DISK_1

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

Finished recover at 08-JUN-12

RMAN> alter database open; -----在RMAN下将oracle启到OPEN状态

database opened

RMAN> quit;

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

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 8 13:11:18 2012

SQL> conn /as sysdba
Connected.
SQL> select enabled,status,name from v$datafile where name like '%users%'; ----查看表空间的是否是read write

ENABLED STATUS
---------- -------
NAME
--------------------------------------------------------------------------------
READ ONLY ONLINE
/u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_7x4dj22v_.dbf

SQL> alter tablespace users read write; ---将只读表空间转换成可写状态

Tablespace altered.

SQL> select enabled,status,name from v$datafile where name like '%users%';

ENABLED STATUS
---------- -------
NAME
--------------------------------------------------------------------------------
READ WRITE ONLINE
/u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_7x4dj22v_.dbf

SQL> select * from hr.strom; ----查看修复的表空间是否有strom表

A
----------
1
2

转载于:https://blog.51cto.com/atxstrom/893797

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