ORA-600[kdsgrp1] – 专业Oracle数据库恢复，或许是您恢复数据的最后机会@phone:17813235971

某集团的ebs系统因磁盘空间不足把redo和undo存放到raid 0之上，而且该库无任何备份。最终悲剧发生了,raid 0异常导致redo undo全部丢失,数据库无法正常启动(我接手之时数据库已经resetlogs过,但是未成功)

Sun Jul 27 11:31:27 2014
SMON: enabling cache recovery
SMON: enabling tx recovery
Sun Jul 27 11:31:27 2014
Database Characterset is ZHS16GBK
Sun Jul 27 11:31:27 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/bdump/prod_smon_454754.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 42 cannot be read at this time
ORA-01110: data file 42: '/prod/oracle/PROD/logdata/undo/undo1.dbf'
Sun Jul 27 11:31:27 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/bdump/prod_smon_454754.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 42 cannot be read at this time
ORA-01110: data file 42: '/prod/oracle/PROD/logdata/undo/undo1.dbf'
Sun Jul 27 11:31:27 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/bdump/prod_smon_454754.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 42 cannot be read at this time
ORA-01110: data file 42: '/prod/oracle/PROD/logdata/undo/undo1.dbf'
Sun Jul 27 11:31:27 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_663670.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 41 cannot be read at this time
ORA-01110: data file 41: '/prod/oracle/PROD/logdata/undo/undo2.dbf'
Error 604 happened during db open, shutting down database
USER: terminating instance due to error 604
Instance terminated by USER, pid = 663670
ORA-1092 signalled during: ALTER DATABASE OPEN...

查询相关文件状态发现,undo表空间文件丢失,被offline处理
df_status
因为以前alert日志被清理,通过这里大概猜测是offline丢失的undo文件,然后resetlogs了数据库,现在处理方式为
使用_corrupted_rollback_segments屏蔽回滚段,然后尝试启动数据库

Tue Jul 29 11:40:39 2014
SMON: enabling cache recovery
SMON: enabling tx recovery
Tue Jul 29 11:40:39 2014
Database Characterset is ZHS16GBK
Tue Jul 29 11:40:39 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/bdump/prod_smon_569378.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number  with name "" too small
Tue Jul 29 11:40:39 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/bdump/prod_smon_569378.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number  with name "" too small
Tue Jul 29 11:40:39 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/bdump/prod_smon_569378.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number  with name "" too small
Tue Jul 29 11:40:39 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_585786.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number  with name "" too small
Error 604 happened during db open, shutting down database
USER: terminating instance due to error 604
Instance terminated by USER, pid = 585786
ORA-1092 signalled during: alter database open...

该错误是由于数据库启动需要找到对应的回滚段,但是由于undo异常导致该回滚段无法找到，因此出现该错误，解决方法是通过修改数据scn，让其不找回滚段,从而屏蔽该错误.数据库启动后,删除undo重新创建新undo

Tue Jul 29 15:59:22 2014
drop tablespace undo2 including contents and datafiles
Tue Jul 29 15:59:23 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_782490.trc:
ORA-01122: database file 41 failed verification check
ORA-01110: data file 41: '/prod/oracle/PROD/logdata/undo/undo2.dbf'
ORA-01565: error in identifying file '/prod/oracle/PROD/logdata/undo/undo2.dbf'
ORA-27037: unable to obtain file status
IBM AIX RISC System/6000 Error: 2: No such file or directory
Additional information: 3
Tue Jul 29 15:59:23 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_782490.trc:
ORA-01259: unable to delete datafile /prod/oracle/PROD/logdata/undo/undo2.dbf
Tue Jul 29 15:59:23 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_782490.trc:
ORA-01122: database file 42 failed verification check
ORA-01110: data file 42: '/prod/oracle/PROD/logdata/undo/undo1.dbf'
ORA-01565: error in identifying file '/prod/oracle/PROD/logdata/undo/undo1.dbf'
ORA-27037: unable to obtain file status
IBM AIX RISC System/6000 Error: 2: No such file or directory
Additional information: 3
ORA-01259: unable to delete datafile /prod/oracle/PROD/logdata/undo/undo2.dbf
Tue Jul 29 15:59:23 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_782490.trc:
ORA-01259: unable to delete datafile /prod/oracle/PROD/logdata/undo/undo1.dbf
Tue Jul 29 15:59:23 2014
Completed: drop tablespace undo2 including contents and datafiles
Tue Jul 29 15:59:56 2014
create undo tablespace undotbs1 datafile '/prod/oracle/PROD/logdata/undo_new01.dbf' size 100M autoextend on next 128M maxsize 30G
Tue Jul 29 15:59:57 2014
Completed: create undo tablespace undotbs1 datafile '/prod/oracle/PROD/logdata/undo_new01.dbf' size 100M autoextend on next 128M maxsize 30G
Tue Jul 29 16:00:03 2014
alter tablespace undotbs1 add datafile '/prod/oracle/PROD/logdata/undo_new02.dbf' size 100M autoextend on next 128M maxsize 30G
Completed: alter tablespace undotbs1 add datafile '/prod/oracle/PROD/logdata/undo_new02.dbf' size 100M autoextend on next 128M maxsize 30G

业务运行过程中,数据库报大量ORA-600 4097,ORA-600 kdsgrp1,ORA-600 kcfrbd_3错误

Tue Jul 29 16:07:03 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_950484.trc:
ORA-00600: internal error code, arguments: [4097], [], [], [], [], [], [], []
Tue Jul 29 16:07:06 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_950484.trc:
ORA-00600: internal error code, arguments: [kdsgrp1], [], [], [], [], [], [], []
Tue Jul 29 16:10:06 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_917702.trc:
ORA-00600: internal error code, arguments: [4097], [], [], [], [], [], [], []
Tue Jul 29 16:10:07 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_917702.trc:
ORA-00600: internal error code, arguments: [kdsgrp1], [], [], [], [], [], [], []
Tue Jul 29 16:12:45 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/bdump/prod_m000_880692.trc:
ORA-00600: internal error code, arguments: [4097], [], [], [], [], [], [], []
Tue Jul 29 16:21:23 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_1040638.trc:
ORA-00600: 内部错误代码, 参数: [kcfrbd_3], [41], [231381], [1], [12800], [12800], [], []
Tue Jul 29 16:21:37 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_1040638.trc:
ORA-00600: 内部错误代码, 参数: [kcfrbd_3], [41], [231381], [1], [12800], [12800], [], []
Tue Jul 29 16:21:56 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_1040638.trc:
ORA-00600: 内部错误代码, 参数: [kcfrbd_3], [41], [231381], [1], [12800], [12800], [], []
Tue Jul 29 16:22:18 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_1040638.trc:
ORA-00600: 内部错误代码, 参数: [kcfrbd_3], [41], [231381], [1], [12800], [12800], [], []
Tue Jul 29 16:22:28 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_1105950.trc:
ORA-00600: 内部错误代码, 参数: [4097], [], [], [], [], [], [], []
Tue Jul 29 16:22:33 2014
Errors in file /prod/oracle/PROD/db/tech_st/10.2.0/admin/PROD_erpserver/udump/prod_ora_1159232.trc:
ORA-00600: 内部错误代码, 参数: [kcfrbd_3], [42], [61235], [1], [12800], [12800], [], []

出现该错误有几个原因和解决方法：
ORA-600 kdsgrp1 是因为相关坏块引起(tab,index,memory,cr block等),结合日志分析对象异常原因,根据具体情况确定对象然后选择合适处理方案(具体参考NOTE:1332252.1)
ORA-600 4097 由于数据库异常关闭然后open,创建回滚段,可能触发bug导致该问题(虽然说在当前版本修复,但是实际处理我确实按照NOTE:1030620.6解决)
ORA-600 kcfrbd_3 有事务的block被访问之后,根据回滚槽信息定位到相关回滚段,而正好新建的回滚段信息又和以前的名字编号一致,从而反馈出来是数据文件大小不够,从而出现该错误(具体参考NOTE:601798.1)
最终该数据库虽然恢复了,抢救了大量数据,但是对于ebs系统来说,丢失redo和undo数据的损失还是巨大的.再次温馨提示:数据库的redo,undo也很重要,数据库的备份更加重要

数据库版本

SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE    10.2.0.4.0      Production
TNS for IBM/AIX RISC System/6000: Version 10.2.0.4.0 - Productio
NLSRTL Version 10.2.0.4.0 - Production

找出报错对象

--方法1
*** SESSION ID:(795.16405) 2012-04-05 09:36:11.958
            row 080095ee.26 continuation at
            file# 32 block# 38382 slot 39 not found
**************************************************
KDSTABN_GET: 0 ..... ntab: 1
curSlot: 39 ..... nrows: 19
**************************************************

SQL> SELECT OWNER, SEGMENT_NAME, SEGMENT_TYPE, TABLESPACE_NAME, A.PARTITION_NAME
  2    FROM DBA_EXTENTS A
  3   WHERE FILE_ID = &amp;amp;FILE_ID
  4     AND &amp;amp;BLOCK_ID BETWEEN BLOCK_ID AND BLOCK_ID + BLOCKS - 1;
Enter value for file_id: 32
old   3:  WHERE FILE_ID = &amp;amp;FILE_ID
new   3:  WHERE FILE_ID = 32
Enter value for block_id: 38382
old   4:    AND &amp;amp;BLOCK_ID BETWEEN BLOCK_ID AND BLOCK_ID + BLOCKS - 1
new   4:    AND 38382 BETWEEN BLOCK_ID AND BLOCK_ID + BLOCKS - 1

OWNER
------------------------------
SEGMENT_NAME
--------------------------------------------------------------------------------
SEGMENT_TYPE       TABLESPACE_NAME                PARTITION_NAME
------------------ ------------------------------ ------------------------------
AHV8
TBL_IVR_LOG
TABLE PARTITION    CSS_PARTITION                  IVR_LOG_2012_MONTH04

--方法2
*** 2012-04-05 09:36:11.965
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [kdsgrp1], [], [], [], [], [], [], []
Current SQL statement for this session:
INSERT INTO TBL_CONTACT_INFO_FAILED_TMP 
select * from TBL_IVR_LOG

SO: 70000017f954f50, type: 4, owner: 70000017f65a840, flag: INIT/-/-/0x00
(session) sid: 795 trans: 70000017464a1e8, creator: 70000017f65a840, flag: (40110041) USR/- BSY/-/-/-/-/-
              DID: 0002-0067-000305BD, short-term DID: 0002-0067-000305BE
              txn branch: 0
              oct: 2, prv: 0, sql: 70000015180ee98, psql: 700000180d67550, user: 49/AHV8
service name: SYS$USERS
O/S info: user: oracle10, term: UNKNOWN, ospid: 12976218, machine: zwq_kfdb2
              program: oracle@zwq_kfdb2 (J002)
last wait for 'db file sequential read' blocking sess=0x0 seq=226 wait_time=17071 seconds since wait started=1
                file#=20, block#=95ee, blocks=1

--方法3
Block header dump:  0x080095ee
 Object id on Block? Y
 seg/obj: 0x11eeb  csc: 0x6f2.848e814  itc: 2  flg: E  typ: 1 - DATA
     brn: 1  bdba: 0x7c09c89 ver: 0x01 opc: 0
     inc: 0  exflg: 0


SQL> select to_number('11eeb','xxxxxxxx') from dual;

TO_NUMBER('11EEB','XXXXXXXX')
-----------------------------
                        73451

SQL> select owner,object_name,subobject_name,object_type from dba_objects where data_object_id='73451';

OWNER
------------------------------
OBJECT_NAME
--------------------------------------------------------------------------------
SUBOBJECT_NAME                 OBJECT_TYPE
------------------------------ -------------------
AHV8
TBL_IVR_LOG
IVR_LOG_2012_MONTH04           TABLE PARTITION

验证是否真的坏块

SQL> select name from v$datafile where file#=32;

NAME
------------------------------------------------------
/dev/rdb1_data27

[zwq_kfdb2:/home/oraeye]dbv file='/dev/rdb1_data27' blocksize=8192

DBVERIFY: Release 10.2.0.4.0 - Production on Fri Apr 13 15:33:10 2012

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

DBVERIFY - Verification starting : FILE = /dev/rdb1_data27
  

DBVERIFY - Verification complete

Total Pages Examined         : 1048448
Total Pages Processed (Data) : 947357
Total Pages Failing   (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing   (Index): 0
Total Pages Processed (Other): 4756
Total Pages Processed (Seg)  : 0
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 96335
Total Pages Marked Corrupt   : 0
Total Pages Influx           : 0
Highest block SCN            : 297329920 (1778.297329920)

SQL> select count(*) from AHV8.TBL_IVR_LOG partition(IVR_LOG_2012_MONTH04);

  COUNT(*)
----------
   8798030

总结：很明显这次出现这个问题，因为内存中出现坏块导致，经过一段时间buffer cache中的坏块内容已经被老化，所以现在不能重现(甚至不用做任何操作)。如果内存中出现了坏块，而且还没有被老化掉，可以刷新data buffer;如果是数据块出现坏块，根据实际情况决定处理

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Tag Archives: ORA-600[kdsgrp1]

某集团ebs数据库redo undo丢失导致悲剧

记录一次ORA-00600[kdsgrp1]分析

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