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[Exadata硬件] 数据库出现坏块，如何处理？

1^#

发表于 2015-5-6 10:32:32 | 查看: 4315| 回复: 5

--alter.log报错
Tue May  5 17:47:44 2015
Hex dump of (file 124, block 8) in trace file /oraclelog/admin/crmdb/udump/crmdb1_ora_659922.trc
Corrupt block relative dba: 0x1f000008 (file 124, block 8)
Bad check value found during backing up datafile
Data in bad block:
type: 30 format: 2 rdba: 0x1f000008
last change scn: 0x0ae8.04e027a0 seq: 0x1 flg: 0x04
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0x27a01e01
check value in block header: 0x28f4
computed block checksum: 0x6a0c
Reread of blocknum=8, file=/dev/rcrmvg2_1_vd2. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg2_1_vd2. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg2_1_vd2. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg2_1_vd2. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg2_1_vd2. found same corrupt data
Hex dump of (file 162, block 8) in trace file /oraclelog/admin/crmdb/udump/crmdb1_ora_659922.trc
Corrupt block relative dba: 0x28800008 (file 162, block 8)
Bad check value found during backing up datafile
Data in bad block:
type: 30 format: 2 rdba: 0x28800008
last change scn: 0x0ae9.57f4a527 seq: 0x1 flg: 0x04
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0xa5271e01
check value in block header: 0x4cbf
computed block checksum: 0x6a0c
Reread of blocknum=8, file=/dev/rcrmvg3_1_vd3. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg3_1_vd3. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg3_1_vd3. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg3_1_vd3. found same corrupt data
Reread of blocknum=8, file=/dev/rcrmvg3_1_vd3. found same corrupt data
Tue May  5 18:01:54 2015
ALTER SYSTEM ARCHIVE LOG

--查看状态
SQL> SELECT a.file_id,a.tablespace_name,a.status,a.online_status
  2 FROM dba_data_files a WHERE a.file_id IN(162,124);

FILE_ID TABLESPACE_NAME             STATUS ONLINE_STATUS
---------- ------------------------------ --------- -------------
   124 TBS_ILCU                      AVAILABLE RECOVER
   162 TBS_DATE_999                AVAILABLE RECOVER

--文件状态为可用，online_status处于待恢复状态

这个错误出现有一段时间了，但是数据处于可用状态。请教各位如何处理？还需要提供什么信息？谢谢各位

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Maclean Liu(刘相兵

2^#

发表于 2015-5-6 10:47:47

坏块未必位于应用用到的表或索引上，或者干脆在游离块上

有备份的情况下 =》少量坏块直接 blockrecover即可
无备份的情况下 =》视乎坏块位于何种对象，对于索引可以rebuild，对于游离块可以覆盖，对于表可以通过特殊event跳过坏块来重建表

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stevehai812

3^#

发表于 2015-5-6 11:16:17

Maclean Liu(刘相兵发表于 2015-5-6 10:47
坏块未必位于应用用到的表或索引上，或者干脆在游离块上

有备份的情况下 =》少量坏块直接 blockrecove ...

crmdb1:{/oraclelog/admin/crmdb/bdump}$crsctl query  css votedisk
0.    0 /dev/rcrmvg1_1_vdl
1.    0 /dev/rcrmvg2_1_vd2
2.    0 /dev/rcrmvg3_1_vd3

竟然将voting disk使用的裸设备加在表空间上，进一步查看添加操作
Wed Apr 13 10:32:45 2011
alter tablespace TBS_CRM_DITF_B add datafile '/dev/rcrmvg3_1_vd3' size 1023m
Wed Apr 13 10:32:49 2011
Completed: alter tablespace TBS_CRM_DITF_B add datafile '/dev/rcrmvg3_1_vd3' size 1023m

刘大，这个有什么风险？如何处理呢？将表空间迁走？

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