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Oracle HowTo: How to deal with Ora-600 4193 error

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在解决2662错误之后，经常会出现Ora-00600 4193错误，本文进行了相关的分析。

作者：盖国强来源：eygle.com 2007年10月2日

在解决2662错误之后，经常会出现Ora-00600 4193错误，经常可以在alert文件中看到的错误号类似:

Fri Dec 16 22:37:27 2005
Errors in file /opt/oracle/admin/conner/bdump/conner_smon_22817.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [4193], [1171], [1187], [], [], [], [], []
Fri Dec 16 23:28:40 2005
Errors in file /opt/oracle/admin/conner/bdump/conner_smon_22817.trc:
ORA-00600: internal error code, arguments: [4193], [1171], [1187], [], [], [], [], []

4193错误通常是因为恢复时redo与undo不一致所导致。

Oracle的解释如下:

While backing out an undo record (i.e. at the time of rollback) we found a transaction id mis-match indicating either a corruption in the rollback segment or corruption in an object which the rollback segment is trying to apply undo records on.

This would indicate a corrupted rollback segment.

检查具体的Trace文件，可以发现类似如下错误：

*** 2005-12-16 20:54:53.496
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [4193], [1171], [1187], [], [], [], [], []
Current SQL statement for this session:
UPDATE SMON_SCN_TIME SET SCN_WRP=:1, SCN_BAS=:2, TIME_MP=:3, TIME_DP=:4 
WHERE TIME_MP = :5  AND   THREAD = :6  AND   ROWNUM <= 1

由于是UNDO存在不一致，可以通过重建UNDO表空间来解决:

SQL> create undo tablespace undotbs2 
   2 datafile '/opt/oracle/oradata/conner/undotbs2.dbf' size 10m;

Tablespace created.

SQL> alter system set undo_tablespace=undotbs2 scope=both;

System altered.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area  114365800 bytes
Fixed Size                   451944 bytes
Variable Size              50331648 bytes
Database Buffers           62914560 bytes
Redo Buffers                 667648 bytes
Database mounted.
Database opened.
SQL> show parameter undo

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
undo_management                      string      AUTO
undo_retention                       integer     10800
undo_suppress_errors                 boolean     FALSE
undo_tablespace                      string      UNDOTBS2

SQL> drop tablespace undotbs1 including contents and datafiles;

Tablespace dropped.

至此，Ora-600 4193错误不再出现。

从alert文件中，可以看到自动控制文件备份生效：

Sun Dec 18 22:37:59 2005
drop tablespace undotbs1 including contents and datafiles
Sun Dec 18 22:37:59 2005
Deleted file /opt/oracle/oradata/conner/undotbs01.dbf
Starting control autobackup
Control autobackup written to DISK device
        handle '/opt/oracle/product/9.2.0/dbs/c-3152029224-20051218-01'
Completed: drop tablespace undotbs1 including contents and da

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Oracle HowTo: How to deal with Ora-600 4193 error

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