1、alert日志报错信息：

Corrupt block relative dba: 0x08f3ff01 (file 35, block

3407617)

Bad check value found during buffer read

Data in bad

block:

type: 6 format: 2 rdba: 0x08f3ff01

last change scn: 0x0000.9ec80357

seq: 0x1 flg: 0x06

spare1: 0x0 spare2: 0x0 spare3: 0x0

consistency value

in tail: 0x03570601

check value in block header: 0xbda9

computed block

checksum: 0x66e2

Reread of rdba: 0x08f3ff01 (file 35, block 3407617) found

same corrupted data

Mon Apr 15 11:39:05 2013

Corrupt Block Found

TSN = 37, TSNAME = 0000050346

RFN = 35,

BLK = 3407617, RDBA = 150208257

OBJN = 142282, OBJD = 142282, OBJECT

= R_AGS_E, SUBOBJECT =

SEGMENT OWNER =

0000050346, SEGMENT TYPE = Table

Segment

说明0000050346用户下表R_AGS_E存在坏块。

2、处理方法：

创建一张与R_AGS_E表结构完全一致的表R_AGS_E_N；

重命名R_AGS_E表为R_AGS_E_OLD；

ALTER

TABLE R_AGS_E RENAME TO R_AGS_E_OLD;

重命名R_AGS_E_N为R_AGS_E；

ALTER TABLE

R_AGS_E_N RENAME TO R_AGS_E;

3、怎样挽救R_AGS_E_OLD中的数据：主要参考盖国强的《》

采用exp导出，后imp导入的办法恢复

[oracle@SHLT-PA4-ORACLE

~]$ exp 0000050346/0000050346 file=r_ags_e_old.dmp tables=r_ags_e_old

Export:

Release 10.2.0.1.0 - Production on Tue Apr 16 09:12:11 2013

Copyright (c)

1982, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database

10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the

Partitioning, OLAP and Data Mining options

Export done in ZHS16GBK character

set and AL16UTF16 NCHAR character set

About to export specified tables via

Conventional Path ...

. . exporting table

R_AGS_E_OLD

EXP-00056: ORACLE error 1578 encountered

ORA-01578: ORACLE

data block corrupted (file # 35, block # 3407617)

ORA-01110: data file 35:

'/home/oracle/oracle10g/oradata/0000050346.dbf'

Export terminated

successfully with

warnings.

直接exp导出报错；

我们可以设置内部事件，使exp跳过这些损坏的block

SQL> ALTER

SYSTEM SET EVENTS='10231 trace name context forever,level

10';

系统已更改。

更改完成后，执行exp导出操作

[oracle@SHLT-PA4-ORACLE ~]$ exp

0000050346/0000050346 file=r_ags_e_old.dmp tables=r_ags_e_old

Export: Release

10.2.0.1.0 - Production on Tue Apr 16 09:30:01 2013

Copyright (c) 1982, 2005,

Oracle.  All rights reserved.

Connected to: Oracle Database 10g

Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the

Partitioning, OLAP and Data Mining options

Export done in ZHS16GBK character

set and AL16UTF16 NCHAR character set

About to export specified tables via

Conventional Path ...

. . exporting table                    R_AGS_E_OLD

2757906 rows exported

Export terminated successfully without

warnings.

运气不错，已挽救这么多数据；

下一步在数据库中删除R_AGS_E_OLD，重启imp导入即可。

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