在数据库的恢复过程中遇到ORA-600 4000错误挺多的，但是在oracle 8i(8.1.7)中遇到此类问题，还是第一次，做个记忆，供参考：
数据库故障起因：因为存储异常，导致当前redo损坏，并_allow_resetlogs_corruption参数尝试打开数据库
Media Recovery Log
kcrrga: Warning. Log sequence in archive filename wrapped
to fix length as indicated by %S in LOG_ARCHIVE_FORMAT.
Old log archive with same name might be overwritten.
ORA-279 signalled during: ALTER DATABASE RECOVER database using backup cont...
Wed Aug 20 23:01:43 2014
ALTER DATABASE RECOVER CANCEL
Media Recovery Cancelled
Completed: ALTER DATABASE RECOVER CANCEL
Wed Aug 20 23:01:50 2014
alter database open resetlogs
RESETLOGS is being done without consistancy checks. This may result
in a corrupted database. The database should be recreated.
RESETLOGS after incomplete recovery UNTIL CHANGE 262618871
Wed Aug 20 23:01:50 2014
Thread 1 opened at log sequence 1
Current log# 3 seq# 1 mem# 0: F:REDO01.LOG
Successful open of redo thread 1.
Wed Aug 20 23:01:50 2014
SMON: enabling cache recovery
Wed Aug 20 23:01:50 2014
Errors in file C:oracleadminYCFDudumpORA00320.TRC:
ORA-00600: ??????????: [4000], [3], [], [], [], [], [], []
SMON: disabling cache recovery
Wed Aug 20 23:01:51 2014
ORA-704 signalled during: alter database open resetlogs
数据库遭遇ORA-600 4000错误，数据库无法打开，分析对应trace日志
Dump file C:oracleadminYCFDudumpORA00320.TRC
Wed Aug 20 23:01:50 2014
ORACLE V8.1.7.0.0 - Production vsnsta=0
vsnsql=e vsnxtr=3
Windows 2000 Version 5.2 Service Pack 2, CPU type 586
Oracle8i Release 8.1.7.0.0 - Production
JServer Release 8.1.7.0.0 - Production
Windows 2000 Version 5.2 Service Pack 2, CPU type 586
Instance name: ycfd
Redo thread mounted by this instance: 1
Oracle process number: 8
Windows thread id: 320, image: ORACLE.EXE
*** SESSION ID:(7.1) 2014-08-20 23:01:50.838
*** 2014-08-20 23:01:50.838
ksedmp: internal or fatal error
ORA-00600: ??????????: [4000], [3], [], [], [], [], [], []
Current SQL statement for this session:
select ctime, mtime, stime from obj$ where obj# = :1
----- Call Stack Trace -----
这里可以看出来，是因为数据库在启动之时需要执行select ctime, mtime, stime from obj$ where obj# = :1语句，但是由于每种原因出现ORA-600 4000导致数据库无法正常启动，继续分析日志
lock header dump: 0x0040003e
Object id on Block? Y
seg/obj: 0x12 csc: 0x00.fb5c5c5 itc: 1 flg: - typ: 1 - DATA
fsl: 0 fnx: 0x0 ver: 0x01
Itl Xid Uba Flag Lck Scn/Fsc
0x01 xid: 0x0003.012.0002ae94 uba: 0x00801f5b.5389.11 --U- 1 fsc 0x0000.0fb5c5c6
SQL> select checkpoint_change# from v$database;
263570122
此处比较明显,通过xid可以知道三号回滚段中对应一个事务出现问题：
1. 该block为file 1 bock 62，object_id为 18（obj$)上有一个事务
2. 该事务的scn为263,570,886>database scn(263570122)导致该故障发生
3. 当数据库访问到file 1 block 62的时候，发现有一个事务，而该事务的scn大于数据库scn，从而出现ORA-600[4000]
解决该问题有几种方法
1. 修改block 62，人工提交该事务
2. 修改数据库scn，让数据库scn大于itl scn
解决block 62 事务问题后出现如下错误
Wed Aug 20 23:03:55 2014
SMON: enabling cache recovery
Wed Aug 20 23:03:55 2014
Dictionary check beginning
Dictionary check complete
Wed Aug 20 23:03:55 2014
SMON: enabling tx recovery
Wed Aug 20 23:03:56 2014
Errors in file C:oracleadminYCFDbdumpycfdSMON.TRC:
ORA-00600: internal error code, arguments: [4193], [21173], [21181], [], [], [], [], []
Recovery of Online Redo Log: Thread 1 Group 1 Seq 2 Reading mem 0
Mem# 0 errs 0: F:REDO03.LOG
SMON: terminating instance due to error 600
Instance terminated by SMON, pid = 2468
数据库出现ORA-600 4193,这个是常见错误,因为redo记录和undo记录不匹配导致,可以直接使用_corrupted_rollback_segments/_offline_rollback_segments屏蔽回滚段跳过
Wed Aug 20 23:08:10 2014
SMON: enabling cache recovery
SMON: enabling tx recovery
SMON: about to recover undo segment 1
SMON: mark undo segment 1 as needs recovery
SMON: about to recover undo segment 2
SMON: mark undo segment 2 as needs recovery
SMON: about to recover undo segment 3
SMON: mark undo segment 3 as needs recovery
SMON: about to recover undo segment 4
SMON: mark undo segment 4 as needs recovery
SMON: about to recover undo segment 5
SMON: mark undo segment 5 as needs recovery
SMON: about to recover undo segment 6
SMON: mark undo segment 6 as needs recovery
SMON: about to recover undo segment 7
SMON: mark undo segment 7 as needs recovery
SMON: about to recover undo segment 1
SMON: mark undo segment 1 as needs recovery
SMON: about to recover undo segment 2
SMON: mark undo segment 2 as needs recovery
SMON: about to recover undo segment 3
SMON: mark undo segment 3 as needs recovery
SMON: about to recover undo segment 4
SMON: mark undo segment 4 as needs recovery
SMON: about to recover undo segment 5
SMON: mark undo segment 5 as needs recovery
SMON: about to recover undo segment 6
SMON: mark undo segment 6 as needs recovery
SMON: about to recover undo segment 7
SMON: mark undo segment 7 as needs recovery
Wed Aug 20 23:08:15 2014
Completed: alter database open
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