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标签归档:ORA-600 4000
ORACLE REDO各种异常恢复
redo是oracle数据库比较核心文件,当redo异常之后,数据库无法正常启动,而且有丢失数据的风险,强烈建议条件允许redo多路镜像.redo文件异常的故障可以说是千奇百怪,但是总体上可以分为几类:
数据库归档/非归档模式下inactive redo异常
ORA-00316 ORA-00327
SQL> startup mount ORACLE instance started. Total System Global Area 260046848 bytes Fixed Size 1266896 bytes Variable Size 83888944 bytes Database Buffers 167772160 bytes Redo Buffers 7118848 bytes Database mounted. SQL> alter database open; alter database open * ERROR at line 1: ORA-00316: log 2 of thread 1, type in header is not log file ORA-00312: online log 2 thread 1: '/u01/oracle/oradata/XFF/redo02.log' SQL> col member for a40 SQL> set lines 120 SQL> SELECT thread#, 2 a.sequence#, 3 a.group#, 4 TO_CHAR (first_change#, '9999999999999999') "SCN", 5 a.status, 6 MEMBER 7 FROM v$log a, v$logfile b 8 WHERE a.group# = B.GROUP# 9 ORDER BY a.sequence# DESC; THREAD# SEQUENCE# GROUP# SCN STATUS MEMBER ---------- ---------- ---------- ----------------- ---------------- ----------------------------------- 1 15 3 665697 CURRENT /u01/oracle/oradata/XFF/redo03.log 1 14 2 645619 INACTIVE /u01/oracle/oradata/XFF/redo02.log 1 13 1 625540 INACTIVE /u01/oracle/oradata/XFF/redo01.log SQL> ALTER DATABASE CLEAR LOGFILE GROUP 2; Database altered. SQL> alter database open; alter database open * ERROR at line 1: ORA-00327: log 2 of thread 1, physical size less than needed ORA-00312: online log 2 thread 1: '/u01/oracle/oradata/XFF/redo02.log' SQL> alter database drop logfile group 2; Database altered. SQL> alter database open; Database altered. SQL> alter database add logfile group 2 ('/u01/oracle/oradata/XFF/redo02.log') size 50M reuse; Database altered.
正常关闭数据库current redo异常
ORA-00316 ORA-01623
SQL> alter database open; alter database open * ERROR at line 1: ORA-00316: log 1 of thread 1, type in header is not log file ORA-00312: online log 1 thread 1: '/u01/oracle/oradata/XFF/redo01.log' SQL> SELECT thread#, 2 a.sequence#, 3 a.group#, 4 TO_CHAR (first_change#, '9999999999999999') "SCN", 5 a.status, 6 MEMBER 7 FROM v$log a, v$logfile b 8 WHERE a.group# = B.GROUP# 9 ORDER BY a.sequence# DESC; THREAD# SEQUENCE# GROUP# SCN STATUS MEMBER ---------- ---------- ---------- ----------------- ---------------- ---------------------------------- 1 16 1 685918 CURRENT /u01/oracle/oradata/XFF/redo01.log 1 15 3 665697 INACTIVE /u01/oracle/oradata/XFF/redo03.log 1 0 2 0 UNUSED /u01/oracle/oradata/XFF/redo02.log SQL> ALTER DATABASE CLEAR LOGFILE GROUP 1; ALTER DATABASE CLEAR LOGFILE GROUP 1 * ERROR at line 1: ORA-00316: log 1 of thread 1, type 0 in header is not log file ORA-00312: online log 1 thread 1: '/u01/oracle/oradata/XFF/redo01.log' SQL> ALTER DATABASE drop logfile group 1; ALTER DATABASE drop logfile group 1 * ERROR at line 1: ORA-01623: log 1 is current log for instance XFF (thread 1) - cannot drop ORA-00312: online log 1 thread 1: '/u01/oracle/oradata/XFF/redo01.log' SQL> recover database until cancel; Media recovery complete. SQL> alter database open resetlogs; Database altered.
数据库异常关闭current/active redo异常
ORA-00316 ORA-01624 ORA-01194
SQL> alter database open; alter database open * ERROR at line 1: ORA-00316: log 1 of thread 1, type 0 in header is not log file ORA-00312: online log 1 thread 1: '/u01/oracle/oradata/XFF/redo01.log' SQL> SELECT thread#, 2 a.sequence#, 3 a.group#, 4 TO_CHAR (first_change#, '9999999999999999') "SCN", 5 a.status, 6 MEMBER 7 FROM v$log a, v$logfile b 8 WHERE a.group# = B.GROUP# 9 ORDER BY a.sequence# DESC; THREAD# SEQUENCE# GROUP# SCN STATUS MEMBER ---------- ---------- ---------- ----------------- ---------------- ----------------------------------- 1 8 2 686310 CURRENT /u01/oracle/oradata/XFF/redo02.log 1 7 1 686294 ACTIVE /u01/oracle/oradata/XFF/redo01.log 1 6 3 686289 INACTIVE /u01/oracle/oradata/XFF/redo03.log SQL> ALTER DATABASE CLEAR LOGFILE GROUP 1; ALTER DATABASE CLEAR LOGFILE GROUP 1 * ERROR at line 1: ORA-01624: log 1 needed for crash recovery of instance XFF (thread 1) ORA-00312: online log 1 thread 1: '/u01/oracle/oradata/XFF/redo01.log' SQL> ALTER DATABASE drop logfile group 1; ALTER DATABASE drop logfile group 1 * ERROR at line 1: ORA-01624: log 1 needed for crash recovery of instance XFF (thread 1) ORA-00312: online log 1 thread 1: '/u01/oracle/oradata/XFF/redo01.log' SQL> recover database until cancel ORA-00279: change 686294 generated at 04/20/2013 01:37:16 needed for thread 1 ORA-00289: suggestion : /u01/oracle/oracle/product/10.2.0/db_1/dbs/arch1_7_813202529.dbf ORA-00280: change 686294 for thread 1 is in sequence #7 Specify log: {<RET>=suggested | filename | AUTO | CANCEL} /u01/oracle/oradata/XFF/redo01.log ORA-00308: cannot open archived log '/u01/oracle/oradata/XFF/redo01.log' ORA-27047: unable to read the header block of file Additional information: 2 Specify log: {<RET>=suggested | filename | AUTO | CANCEL} cancel ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: '/u01/oracle/oradata/XFF/system01.dbf' ORA-01112: media recovery not started SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: '/u01/oracle/oradata/XFF/system01.dbf' SQL> alter system set "_allow_resetlogs_corruption"=true scope=spfile; System altered. SQL> shutdown immediate; ORA-01109: database not open Database dismounted. ORACLE instance shut down. SQL> startup mount; ORACLE instance started. Total System Global Area 260046848 bytes Fixed Size 1266896 bytes Variable Size 83888944 bytes Database Buffers 167772160 bytes Redo Buffers 7118848 bytes Database mounted. SQL> recover database until cancel ORA-00279: change 686294 generated at 04/20/2013 01:37:16 needed for thread 1 ORA-00289: suggestion : /u01/oracle/oracle/product/10.2.0/db_1/dbs/arch1_7_813202529.dbf ORA-00280: change 686294 for thread 1 is in sequence #7 Specify log: {<RET>=suggested | filename | AUTO | CANCEL} cancel ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: '/u01/oracle/oradata/XFF/system01.dbf' ORA-01112: media recovery not started SQL> alter database open resetlogs; Database altered.
在这样的情况下,数据库异常关闭,current/active redo异常,通过使用隐含参数可能可以侥幸的恢复数据库,但是也可能导致数据丢失.这里因为是模拟情况,无业务所以在很多较为繁忙的业务系统中,使用隐含参数resetlogs过程中可能还会遇到如下很多常见的错误,进一步增加了恢复难度
current/active redo异常后附带其他错误
ORA-600[2662]
Wed Dec 07 13:02:49 2011 SMON: enabling cache recovery Errors in file d:\app\administrator\diag\rdbms\hzyl\hzyl\trace\hzyl_ora_3388.trc (incident=216664): ORA-00600: 内部错误代码, 参数: [2662], [2], [1153862134], [2], [1153864845], [12582921], [], [] Incident details in: d:\app\administrator\diag\rdbms\hzyl\hzyl\incident\incdir_216664\hzyl_ora_3388_i216664.trc Errors in file d:\app\administrator\diag\rdbms\hzyl\hzyl\trace\hzyl_ora_3388.trc: ORA-00600: 内部错误代码, 参数: [2662], [2], [1153862134], [2], [1153864845], [12582921], [], [] Error 600 happened during db open, shutting down database USER (ospid: 3388): terminating the instance due to error 600
ORA-00600[4000]
Thu Feb 28 19:29:10 2013 SMON: enabling cache recovery Thu Feb 28 19:29:11 2013 Errors in file /u1/PROD/prodora/db/tech_st/10.2.0/admin/PROD_oracle/udump/prod_ora_20989.trc: ORA-00600: internal error code, arguments: [4000], [50], [], [], [], [], [], [] Thu Feb 28 19:29:13 2013 Incremental checkpoint up to RBA [0x1.3.0], current log tail at RBA [0x1.3.0] Thu Feb 28 19:29:13 2013 Errors in file /u1/PROD/prodora/db/tech_st/10.2.0/admin/PROD_oracle/udump/prod_ora_20989.trc: ORA-00704: bootstrap process failure ORA-00704: bootstrap process failure ORA-00600: internal error code, arguments: [4000], [50], [], [], [], [], [], []
ORA-00704 ORA-00604 ORA-01555
Fri May 4 21:04:21 2012 select ctime, mtime, stime from obj$ where obj# = :1 Fri May 4 21:04:21 2012 Errors in file /oracle/admin/standdb/udump/perfdb_ora_1286288.trc: ORA-00704: bootstrap process failure ORA-00704: bootstrap process failure ORA-00604: error occurred at recursive SQL level 1 ORA-01555: snapshot too old: rollback segment number 40 with name "_SYSSMU40$" too small Error 704 happened during db open, shutting down database USER: terminating instance due to error 704 Instance terminated by USER, pid = 1286288 ORA-1092 signalled during: alter database open resetlogs...
current/active redo异常还可能报如下错误
redo文件损坏报错
Started redo scan Errors in file d:\app\administrator\diag\rdbms\hzyl\hzyl\trace\hzyl_ora_2960.trc (incident=214262): ORA-00353: 日志损坏接近块 12014 更改 9743799889 时间 12/05/2011 09:21:11 ORA-00312: 联机日志 3 线程 1: 'R:\ORADATA\HZYL\REDO03.LOG' Incident details in: d:\app\administrator\diag\rdbms\hzyl\hzyl\incident\incdir_214262\hzyl_ora_2960_i214262.trc Aborting crash recovery due to error 368 Errors in file d:\app\administrator\diag\rdbms\hzyl\hzyl\trace\hzyl_ora_2960.trc: ORA-00368: 重做日志块中的校验和错误 ORA-00353: 日志损坏接近块 12014 更改 9743799889 时间 12/05/2011 09:21:11 ORA-00312: 联机日志 3 线程 1: 'R:\ORADATA\HZYL\REDO03.LOG' ORA-368 signalled during: ALTER DATABASE OPEN...
redo文件被其他实例占用报错
Wed May 16 17:03:11 2012 Started redo scan Wed May 16 17:03:11 2012 Errors in file /oracle/admin/odsdb/udump/odsdb1_ora_2040024.trc: ORA-00305: log 14 of thread 1 inconsistent; belongs to another database ORA-00312: online log 14 thread 1: '/dev/rods_redo1_2_2' ORA-00305: log 14 of thread 1 inconsistent; belongs to another database ORA-00312: online log 14 thread 1: '/dev/rods_redo1_2_1' ORA-305 signalled during: ALTER DATABASE OPEN...
存储整体异常
Mon Oct 17 09:35:09 2011 Errors in file /oracle/app/admin/orcl/bdump/orcl2_lgwr_348814.trc: ORA-00340: IO error processing online log 4 of thread 2 ORA-00345: redo log write error block 6732 count 2 ORA-00312: online log 4 thread 2: '/dev/rredo21' ORA-27063: number of bytes read/written is incorrect IBM AIX RISC System/6000 Error: 6: No such device or address Additional information: -1 Additional information: 1024 Mon Oct 17 09:35:09 2011 LGWR: terminating instance due to error 340
存储IO异常
Fri Feb 21 08:44:42 2014 Thread 1 advanced to log sequence 591 (LGWR switch) Current log# 1 seq# 591 mem# 0: J:\ORADATA\ORCL\REDO01.LOG Fri Feb 21 15:31:20 2014 Errors in file c:\oracle\product\10.2.0\admin\orcl\bdump\orcl_lgwr_10312.trc: ORA-00316: log 1 of thread 1, type 286 in header is not log file ORA-00312: online log 1 thread 1: 'J:\ORADATA\ORCL\REDO01.LOG'
使用_disable_logging参数
Sat May 14 23:16:49 2005 Errors in file d:\oracle\admin\rman\bdump\rman_arc0_736.trc: ORA-16038: log 3 sequence# 72 cannot be archived ORA-00354: corrupt redo log block header ORA-00312: online log 3 thread 1: 'D:\ORACLE\ORADATA\RMAN\REDO03.LOG'
如果你在使用这些思路进行恢复遇到突发情况不能自行解决,请联系我们,将为您提供专业数据库技术支持
Phone:17813235971 Q Q:107644445 E-Mail:dba@xifenfei.com
姊妹篇
undo异常总结和恢复思路
ORACLE丢失各种文件导致数据库不能OPEN恢复
发表在 Oracle备份恢复
标签为 ORA-00316, ORA-00327, ORA-01194, ORA-01623, ORA-01624, ORA-600 2662, ORA-600 4000, ORACLE恢复, ORACLE数据库恢复, redo异常
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记录一次ORA-600 4000数据库故障恢复
ORA-600[4000]错误
一朋友数据库因为当前redo丢失,在恢复的过程中启动报ORA-600[4000]错误
SMON: enabling cache recovery Thu May 30 16:24:17 2013 Errors in file /u02/oracle/app/oracle/admin/xifenfei/udump/xifenfei1_ora_1458370.trc: ORA-00600: internal error code, arguments: [4000], [83], [], [], [], [], [], [] Thu May 30 16:24:19 2013 Errors in file /u02/oracle/app/oracle/admin/xifenfei/udump/xifenfei1_ora_1458370.trc: ORA-00704: bootstrap process failure ORA-00704: bootstrap process failure ORA-00600: internal error code, arguments: [4000], [83], [], [], [], [], [], [] Thu May 30 16:24:19 2013 Error 704 happened during db open, shutting down database USER: terminating instance due to error 704 Instance terminated by USER, pid = 1458370 ORA-1092 signalled during: alter database open resetlogs...
分析trace文件
*** 2013-05-30 16:24:17.979 ksedmp: internal or fatal error ORA-00600: internal error code, arguments: [4000], [83], [], [], [], [], [], [] Current SQL statement for this session: select ctime, mtime, stime from obj$ where obj# = :1 --确定是obj$对象异常,通过某种手段找到obj$的objid和dataobjid均为16,对应16进制为12 Block header dump: 0x0040007a Object id on Block? Y seg/obj: 0x12 csc: 0xc1e.a329e76f itc: 1 flg: - typ: 1 - DATA fsl: 0 fnx: 0x0 ver: 0x01 Itl Xid Uba Flag Lck Scn/Fsc 0x01 0x0053.02a.000598bd 0x0d407e46.4f52.2f --U- 1 fsc 0x0000.a329e772
这里比较明显obj$对象在rdba为0040007a的block上,scn为0c1e.a329e76f(13325725984623)且未提交的事务,这样的现象就决定了处理的特殊性(不是因为块延迟清理导致访问undo现象,该现象直接推进scn解决,而该情况不行)
数据文件头scn
SQL> SELECT DISTINCT CHECKPOINT# FROM V$DATAFILE_HEADER; CHECKPOINT_CHANGE# ------------------------- 13324676536960
bbed查看文件头scn
struct kcvfhckp, 160 bytes @484 struct kcvcpscn, 8 bytes @484 ub4 kscnbas @484 0x649c9a80 ub2 kscnwrp @488 0x0c1e
这里看到的文件头scn也是为13324676536960(0c1e.649c9a80)和sql查询结果一致,也就是说数据库中的obj$的某个对象含有事务,且scn大于文件头scn(因为当前redo丢失,无法前滚,所以出现该情况),当数据库访问obj$的时候,为了事务的一致性,就需要访问undo(这里提示为83 回滚段),而undo异常,所以smon进程回滚失败,数据库无法正常启动
使用bbed提交事务
BBED> map File: /oradata/sys/xifenfei/system01.dbf (1) Block: 122 Dba:0x0040007a ------------------------------------------------------------ KTB Data Block (Table/Cluster) struct kcbh, 20 bytes @0 struct ktbbh, 48 bytes @20 struct kdbh, 14 bytes @68 struct kdbt[1], 4 bytes @82 sb2 kdbr[108] @86 ub1 freespace[802] @302 ub1 rowdata[7084] @1104 ub4 tailchk @8188 BBED> p ktbbh struct ktbbh, 48 bytes @20 ub1 ktbbhtyp @20 0x01 (KDDBTDATA) union ktbbhsid, 4 bytes @24 ub4 ktbbhsg1 @24 0x00000012 ub4 ktbbhod1 @24 0x00000012 struct ktbbhcsc, 8 bytes @28 ub4 kscnbas @28 0xa329e76f ub2 kscnwrp @32 0x0c1e b2 ktbbhict @36 1 ub1 ktbbhflg @38 0x02 (NONE) ub1 ktbbhfsl @39 0x00 ub4 ktbbhfnx @40 0x00000000 struct ktbbhitl[0], 24 bytes @44 struct ktbitxid, 8 bytes @44 ub2 kxidusn @44 0x0053 ub2 kxidslt @46 0x002a ub4 kxidsqn @48 0x000598bd struct ktbituba, 8 bytes @52 ub4 kubadba @52 0x0d407e46 ub2 kubaseq @56 0x4f52 ub1 kubarec @58 0x2f ub2 ktbitflg @60 0x2001 (KTBFUPB)<--需要提交 union _ktbitun, 2 bytes @62 b2 _ktbitfsc @62 0 ub2 _ktbitwrp @62 0x0000 ub4 ktbitbas @64 0xa329e772 BBED> set count 32 COUNT 32 BBED> set offset 60 OFFSET 60 BBED> d File: /oradata/sys/xifenfei/system01.dbf (1) Block: 122 Offsets: 60 to 91 Dba:0x0040007a ------------------------------------------------------------------------ 20010000 a329e772 0001006c ffff00ea 040c0368 03680000 006c1f7c 1f3c1efb <32 bytes per line> BBED> m /x 8001 File: /oradata/sys/xifenfei/system01.dbf (1) Block: 122 Offsets: 60 to 91 Dba:0x0040007a ------------------------------------------------------------------------ 80010000 a329e772 0001006c ffff00ea 040c0368 03680000 006c1f7c 1f3c1efb <32 bytes per line> BBED> sum apply Check value for File 1, Block 122: current = 0xafd6, required = 0xafd6
尝试open数据库ORA-600[2662]解决
Thu May 30 21:16:00 2013 Errors in file /u02/oracle/app/oracle/admin/xifenfei/bdump/xifenfei1_smon_819664.trc: ORA-00600: internal error code, arguments:[2662],[3102],[2737532996],[3102],[2745973074],[4194397],[],[] Non-fatal internal error happenned while SMON was doing non-existent object cleanup. SMON encountered 1 out of maximum 100 non-fatal internal errors. Thu May 30 21:16:01 2013 Trace dumping is performing id=[cdmp_20130530211601] Thu May 30 21:16:02 2013 Errors in file /u02/oracle/app/oracle/admin/xifenfei/bdump/xifenfei1_smon_819664.trc: ORA-00600: internal error code, arguments:[2662],[3102],[2737532997],[3102],[2745973074],[4194397],[],[] Thu May 30 21:16:03 2013 Non-fatal internal error happenned while SMON was doing logging scn->time mapping. SMON encountered 2 out of maximum 100 non-fatal internal errors. Thu May 30 21:16:05 2013 Errors in file /u02/oracle/app/oracle/admin/xifenfei/bdump/xifenfei1_smon_819664.trc: ORA-00600: internal error code, arguments:[2662],[3102],[2737532997],[3102],[2745973074],[4194397],[],[] Thu May 30 21:16:08 2013 Errors in file /u02/oracle/app/oracle/admin/xifenfei/bdump/xifenfei1_pmon_958764.trc: ORA-00474: SMON process terminated with error Thu May 30 21:16:08 2013 PMON: terminating instance due to error 474
数据库在open过程中遇到大量ORA-00600[2662],这个是因为数据库中文件头的scn小于访问的数据块scn导致该问题,解决方法推荐scn,如果数据库的scn本身就很大(和时间理论scn较接近),推进过程中可能遇到如下错误,这个时候就需要选择合适的方法/合适的值来推进scn
SQL> startup pfile=/home/oracle/pfile force ORACLE instance started. Total System Global Area 5.5835E+10 bytes Fixed Size 2177056 bytes Variable Size 3.2867E+10 bytes Database Buffers 2.2951E+10 bytes Redo Buffers 14598144 bytes Database mounted. ORA-01052: required destination LOG_ARCHIVE_DUPLEX_DEST is not specified
后面的工作因为没有redo前滚,而且该库故障时有大量事务在跑,现在无法前滚,导致大量的undo回滚段异常,index和data不一致等故障,需要做的就是屏蔽undo seg,重建undo,重建库
通过bbed解决ORA-00600[4000]案例
数据库启动出现ORA-00600[4000]错误
Fri Nov 4 06:50:38 2011 Errors in file /u01/oracle/admin/XFF/udump/xff_ora_7046.trc: ORA-00600: internal error code, arguments: [4000], [5], [], [], [], [], [], [] Fri Nov 4 06:50:40 2011 Errors in file /u01/oracle/admin/XFF/udump/xff_ora_7046.trc: ORA-00704: bootstrap process failure ORA-00704: bootstrap process failure ORA-00600: internal error code, arguments: [4000], [5], [], [], [], [], [], [] Fri Nov 4 06:50:40 2011 Error 704 happened during db open, shutting down database USER: terminating instance due to error 704 Instance terminated by USER, pid = 7046 ORA-1092 signalled during: ALTER DATABASE OPEN...
查看trace文件
*** 2011-11-04 06:50:38.942 ksedmp: internal or fatal error ORA-00600: internal error code, arguments: [4000], [5], [], [], [], [], [], [] Current SQL statement for this session: select ctime, mtime, stime from obj$ where obj# = :1 Block header dump: 0x0040007a Object id on Block? Y seg/obj: 0x12 csc: 0x00.1020770d itc: 1 flg: - typ: 1 - DATA fsl: 0 fnx: 0x0 ver: 0x01 Itl Xid Uba Flag Lck Scn/Fsc 0x01 0x0005.029.0000029a 0x00802381.01f9.03 --U- 1 fsc 0x0000.1020770e
查询trace相关数据对应值
SQL> select DBMS_UTILITY.data_block_address_file (TO_NUMBER ('0040007a','xxxxxxxx')) file_no, 2 DBMS_UTILITY.data_block_address_block (TO_NUMBER ('0040007a','xxxxxxxx')) block_no 3 from dual; FILE_NO BLOCK_NO ---------- ---------- 1 122 SQL> select to_number('1020770e','xxxxxxxxxxx') itl_commit from dual; ITL_COMMIT ---------- 270563086 SQL> select to_number('1020770d','xxxxxxxxxxxx') csc from dual; CSC ---------- 270563085
通过这里的分析,我们可以得出file 1 block 122的内容未提交,可能是导致错误ORA-00600[4000],尝试这手工提交该事务
BBED> set file 1 block 122 FILE# 1 BLOCK# 122 BBED> map File: /u01/oracle/oradata/XFF/system01.dbf (1) Block: 122 Dba:0x0040007a ------------------------------------------------------------ KTB Data Block (Table/Cluster) struct kcbh, 20 bytes @0 struct ktbbh, 48 bytes @20 struct kdbh, 14 bytes @68 struct kdbt[1], 4 bytes @82 sb2 kdbr[108] @86 ub1 freespace[873] @302 ub1 rowdata[7013] @1175 ub4 tailchk @8188 BBED> p ktbbh struct ktbbh, 48 bytes @20 ub1 ktbbhtyp @20 0x01 (KDDBTDATA) union ktbbhsid, 4 bytes @24 ub4 ktbbhsg1 @24 0x00000012 ub4 ktbbhod1 @24 0x00000012 struct ktbbhcsc, 8 bytes @28 ub4 kscnbas @28 0x1020770d ub2 kscnwrp @32 0x0000 sb2 ktbbhict @36 1 ub1 ktbbhflg @38 0x02 (NONE) ub1 ktbbhfsl @39 0x00 ub4 ktbbhfnx @40 0x00000000 struct ktbbhitl[0], 24 bytes @44 struct ktbitxid, 8 bytes @44 ub2 kxidusn @44 0x0005 ub2 kxidslt @46 0x0029 ub4 kxidsqn @48 0x0000029a struct ktbituba, 8 bytes @52 ub4 kubadba @52 0x00802381 ub2 kubaseq @56 0x01f9 ub1 kubarec @58 0x03 ub2 ktbitflg @60 0x2001 (KTBFUPB) union _ktbitun, 2 bytes @62 sb2 _ktbitfsc @62 0 ub2 _ktbitwrp @62 0x0000 ub4 ktbitbas @64 0x1020770e BBED> set count 16 COUNT 16 BBED> m /x 0180 offset 60 File: /u01/oracle/oradata/XFF/system01.dbf (1) Block: 122 Offsets: 60 to 75 Dba:0x0040007a ------------------------------------------------------------------------ 01800000 0e772010 00016c00 ffffea00 <32 bytes per line> BBED> p ktbbh struct ktbbh, 48 bytes @20 ub1 ktbbhtyp @20 0x01 (KDDBTDATA) union ktbbhsid, 4 bytes @24 ub4 ktbbhsg1 @24 0x00000012 ub4 ktbbhod1 @24 0x00000012 struct ktbbhcsc, 8 bytes @28 ub4 kscnbas @28 0x1020770d ub2 kscnwrp @32 0x0000 sb2 ktbbhict @36 1 ub1 ktbbhflg @38 0x02 (NONE) ub1 ktbbhfsl @39 0x00 ub4 ktbbhfnx @40 0x00000000 struct ktbbhitl[0], 24 bytes @44 struct ktbitxid, 8 bytes @44 ub2 kxidusn @44 0x0005 ub2 kxidslt @46 0x0029 ub4 kxidsqn @48 0x0000029a struct ktbituba, 8 bytes @52 ub4 kubadba @52 0x00802381 ub2 kubaseq @56 0x01f9 ub1 kubarec @58 0x03 ub2 ktbitflg @60 0x8001 (KTBFCOM) union _ktbitun, 2 bytes @62 sb2 _ktbitfsc @62 0 ub2 _ktbitwrp @62 0x0000 ub4 ktbitbas @64 0x1020770e BBED> sum apply Check value for File 1, Block 122: current = 0x6902, required = 0x6902
尝试重启库
SQL> startup ORACLE instance started. Total System Global Area 318767104 bytes Fixed Size 1219160 bytes Variable Size 92276136 bytes Database Buffers 218103808 bytes Redo Buffers 7168000 bytes Database mounted. ORA-01092: ORACLE instance terminated. Disconnection forced
查看alert日志
Fri Nov 4 07:42:46 2011 Errors in file /u01/oracle/admin/XFF/udump/xff_ora_7702.trc: ORA-00600: internal error code, arguments: [ktbdchk1: bad dscn], [], [], [], [], [], [], [] Fri Nov 4 07:42:46 2011 Errors in file /u01/oracle/admin/XFF/udump/xff_ora_7702.trc: ORA-00704: bootstrap process failure ORA-00704: bootstrap process failure ORA-00600: internal error code, arguments: [ktbdchk1: bad dscn], [], [], [], [], [], [], [] Fri Nov 4 07:42:46 2011 Error 704 happened during db open, shutting down database USER: terminating instance due to error 704 Instance terminated by USER, pid = 7702 ORA-1092 signalled during: ALTER DATABASE OPEN...
分析trace文件
*** 2011-11-04 07:42:46.273 Recovery of Online Redo Log: Thread 1 Group 1 Seq 40 Reading mem 0 ----- Recovery Hash Table Statistics --------- Hash table buckets = 32768 Longest hash chain = 0 Average hash chain = 0/0 = 0.0 Max compares per lookup = 0 Avg compares per lookup = 0/0 = 0.0 ---------------------------------------------- tkcrrsarc: (WARN) Failed to find ARCH for message (message:0x1) tkcrrpa: (WARN) Failed initial attempt to send ARCH message (message:0x1) [ktbdchk] -- readers_dsz -- bad dscn scn: 0x0000.1020770escn: 0x0000.0021fa09 *** 2011-11-04 07:42:46.530 ksedmp: internal or fatal error ORA-00600: internal error code, arguments: [ktbdchk1: bad dscn], [], [], [], [], [], [], [] Current SQL statement for this session: select ctime, mtime, stime from obj$ where obj# = :1 Block header dump: 0x0040007a Object id on Block? Y seg/obj: 0x12 csc: 0x00.1020770d itc: 1 flg: - typ: 1 - DATA fsl: 0 fnx: 0x0 ver: 0x01 Itl Xid Uba Flag Lck Scn/Fsc 0x01 0x0005.029.0000029a 0x00802381.01f9.03 C--- 0 scn 0x0000.1020770e
根据这个错误提示ktbdchk–>bad dscn,猜测ktbdchk是header scn中的ktbdchk,查找1020770e发现是itl comomit scn,通过bbed查看
BBED> p kcvfhckp.kcvcpscn struct kcvcpscn, 8 bytes @484 ub4 kscnbas @484 0x0021fa09 ub2 kscnwrp @488 0x0000
通过这里可以知道ORA-00600[ktbdchk1: bad dscn]是因为itl comomit scn远大于datafile header scn,从而oracle认为datafile header scn是错误的,从而提示ktbdchk1: bad dscn.尝试bbed修改itl comomit scn
BBED> p ktbbh struct ktbbh, 48 bytes @20 ub1 ktbbhtyp @20 0x01 (KDDBTDATA) union ktbbhsid, 4 bytes @24 ub4 ktbbhsg1 @24 0x00000012 ub4 ktbbhod1 @24 0x00000012 struct ktbbhcsc, 8 bytes @28 ub4 kscnbas @28 0x1020770d ub2 kscnwrp @32 0x0000 sb2 ktbbhict @36 1 ub1 ktbbhflg @38 0x02 (NONE) ub1 ktbbhfsl @39 0x00 ub4 ktbbhfnx @40 0x00000000 struct ktbbhitl[0], 24 bytes @44 struct ktbitxid, 8 bytes @44 ub2 kxidusn @44 0x0005 ub2 kxidslt @46 0x0029 ub4 kxidsqn @48 0x0000029a struct ktbituba, 8 bytes @52 ub4 kubadba @52 0x00802381 ub2 kubaseq @56 0x01f9 ub1 kubarec @58 0x03 ub2 ktbitflg @60 0x8001 (KTBFCOM) union _ktbitun, 2 bytes @62 sb2 _ktbitfsc @62 0 ub2 _ktbitwrp @62 0x0000 ub4 ktbitbas @64 0x1020770e BBED> m /x 09fa2100 offset 64 File: /u01/oracle/oradata/XFF/system01.dbf (1) Block: 122 Offsets: 64 to 79 Dba:0x0040007a ------------------------------------------------------------------------ 09fa2100 00016c00 ffffea00 53046903 <32 bytes per line> BBED> sum apply Check value for File 1, Block 122: current = 0xf404, required = 0xf404
启动数据库
SQL> conn / as sysdba Connected to an idle instance. SQL> startup ORACLE instance started. Total System Global Area 318767104 bytes Fixed Size 1219160 bytes Variable Size 92276136 bytes Database Buffers 218103808 bytes Redo Buffers 7168000 bytes Database mounted. Database opened.