ORA-01578坏块解决(1)续集
如果在坏块之前，有rman备份，可以使用rman的备份来进行恢复，确保数据不会被丢失
1、使用rman进行恢复
[oracle@ECP-UC-DB1 ~]$ $ORACLE_HOME/bin/rman target /
Recovery Manager: Release 10.2.0.4.0 – Production on Sun Aug 14 22:21:13 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
connected to target database: TEST (DBID=2056006906)
RMAN> blockrecover datafile 6 block 1477;
Starting blockrecover at 2011-08-14 22:21:16
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=145 devtype=DISK
channel ORA_DISK_1: restoring block(s)
channel ORA_DISK_1: specifying block(s) to restore from backup set
restoring blocks of datafile 00006
channel ORA_DISK_1: reading from backup piece /tmp/0fmk0ii5_1_1
channel ORA_DISK_1: restored block(s) from backup piece 1
piece handle=/tmp/0fmk0ii5_1_1 tag=TAG20110814T213357
channel ORA_DISK_1: block restore complete, elapsed time: 00:00:02
starting media recovery
media recovery complete, elapsed time: 00:00:03
Finished blockrecover at 2011-08-14 22:21:23
2、检查坏块是否被恢复
RMAN> backup check logical validate datafile 6;
Starting backup at 2011-08-14 22:22:11
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00006 name=/opt/oracle/oradata/test/xifenfei01.dbf
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 2011-08-14 22:22:12
RMAN> exit
Recovery Manager complete.
[oracle@ECP-UC-DB1 ~]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.4.0 – Production on Sun Aug 14 22:22:17 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select file#,block#,blocks from v$database_block_corruption;
no rows selected
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@ECP-UC-DB1 ~]$ dbv file =/opt/oracle/oradata/test/xifenfei01.dbf
DBVERIFY: Release 10.2.0.4.0 – Production on Sun Aug 14 22:22:38 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
DBVERIFY – Verification starting : FILE = /opt/oracle/oradata/test/xifenfei01.dbf
DBVERIFY – Verification complete
Total Pages Examined : 2560
Total Pages Processed (Data) : 1372
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing (Index): 0
Total Pages Processed (Other): 48
Total Pages Processed (Seg) : 0
Total Pages Failing (Seg) : 0
Total Pages Empty : 1140
Total Pages Marked Corrupt : 0
Total Pages Influx : 0
Highest block SCN : 1256690 (0.1256690)
3、验证数据是否正确
[oracle@ECP-UC-DB1 ~]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.4.0 – Production on Sun Aug 14 22:34:18 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select count(*) from t_rep;
COUNT(*)
———-
49857
和ORA-01578坏块解决(1)中的模拟环境比较，数据恢复正确，坏块问题解决