一、坏块验证
[oracle@lucky ~]$ dbv file='/u01/eisoo.dbf'
DBVERIFY: Release 11.2.0.1.0 - Production on Thu Oct 2 16:08:24 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - Verification starting : FILE = /u01/eisoo.dbf
Page 148 is marked corrupt
Corrupt block relative dba: 0x01800094 (file 6, block 148)
Bad check value found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x01800094
last change scn: 0x0000.035f6b23 seq: 0x1 flg: 0x06
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0x6b230601
check value in block header: 0x8a1e
computed block checksum: 0x300
DBVERIFY - Verification complete
Total Pages Examined : 384
Total Pages Processed (Data) : 109
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing (Index): 0
Total Pages Processed (Other): 137
Total Pages Processed (Seg) : 0
Total Pages Failing (Seg) : 0
Total Pages Empty : 137
Total Pages Marked Corrupt : 1
Total Pages Influx : 0
Total Pages Encrypted : 0
Highest block SCN : 56584995 (0.56584995)
二、查看表，expdp报错
SQL> select count(*) from eisoo;
select count(*) from eisoo
*
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 6, block # 148)
ORA-01110: data file 6: '/u01/eisoo.dbf'
[oracle@lucky ~]$ exp eisoo/eisoo file=eisoo.dmp tables=eisoo
Export: Release 11.2.0.1.0 - Production on Thu Oct 2 16:11:15 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Export done in US7ASCII character set and AL16UTF16 NCHAR character set
server uses ZHS16GBK character set (possible charset conversion)
About to export specified tables via Conventional Path ...
. . exporting table EISOO
EXP-00056: ORACLE error 1578 encountered
ORA-01578: ORACLE data block corrupted (file # 6, block # 148)
ORA-01110: data file 6: '/u01/eisoo.dbf'
Export terminated successfully with warnings.
三、启动内部事件
SQL> ALTER SYSTEM SET EVENTS='10231 trace name context forever,level 10';
System altered.
四、导出表重建
五、查看表、dbv验证
[oracle@lucky ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Oct 2 16:15:18 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> conn eisoo/eisoo;
Connected.
SQL> select count(*) from eisoo;
COUNT(*)
----------
3139
[oracle@lucky ~]$ dbv file='/u01/eisoo.dbf'
DBVERIFY: Release 11.2.0.1.0 - Production on Thu Oct 2 16:15:11 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - Verification starting : FILE = /u01/eisoo.dbf
Page 148 is marked corrupt
Corrupt block relative dba: 0x01800094 (file 6, block 148)
Bad check value found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x01800094
last change scn: 0x0000.035f6b23 seq: 0x1 flg: 0x06
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0x6b230601
check value in block header: 0x8a1e
computed block checksum: 0x300
DBVERIFY - Verification complete
Total Pages Examined : 384
Total Pages Processed (Data) : 109
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing (Index): 0
Total Pages Processed (Other): 137
Total Pages Processed (Seg) : 0
Total Pages Failing (Seg) : 0
Total Pages Empty : 137
Total Pages Marked Corrupt : 1
Total Pages Influx : 0
Total Pages Encrypted : 0
Highest block SCN : 56584995 (0.56584995)
六、关闭内部事件
SQL> alter system set events='10231 trace name context off';
System altered.