10.2.0.4 RAC for HP-UX，出现600错误并导致实例崩溃。

数据库错误信息如下：

Thu Oct 29 19:49:19 2009
SMON: enabling cache recovery
Thu Oct 29 19:49:19 2009
LNS: Standby redo logfile selected for thread 2 sequence 48 for destination LOG_ARCHIVE_DEST_2
Thu Oct 29 19:49:19 2009
ARC0: Standby redo logfile selected for thread 2 sequence 47 for destination LOG_ARCHIVE_DEST_2
Thu Oct 29 19:49:20 2009
Successfully onlined Undo Tablespace 1.
Thu Oct 29 19:49:20 2009
SMON: enabling tx recovery
Thu Oct 29 19:49:20 2009
Database Characterset is ZHS16GBK
Opening with internal Resource Manager plan
where NUMA PG = 1, CPUs = 8
replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
QMNC started with pid=37, OS id=10359
Thu Oct 29 19:49:23 2009
Completed: ALTER DATABASE OPEN
Thu Oct 29 20:00:36 2009
Errors in file /u01/app/oracle/admin/orcl3/bdump/orcl32_dbw2_10125.trc:
ORA-00600: internal error code, arguments: [kclfusion_1], [], [], [], [], [], [], []
Thu Oct 29 20:00:37 2009
Trace dumping is performing id=[cdmp_20091029200037]
Thu Oct 29 20:00:37 2009
Errors in file /u01/app/oracle/admin/orcl3/bdump/orcl32_dbw2_10125.trc:
ORA-00600: internal error code, arguments: [kclfusion_1], [], [], [], [], [], [], []
Thu Oct 29 20:00:37 2009
DBW2: terminating instance due to error 471
Thu Oct 29 20:00:37 2009
Errors in file /u01/app/oracle/admin/orcl3/bdump/orcl32_lms0_10115.trc:
ORA-00471: DBWR process terminated with error
Thu Oct 29 20:00:37 2009
Errors in file /u01/app/oracle/admin/orcl3/bdump/orcl32_lms1_10117.trc:
ORA-00471: DBWR process terminated with error
Thu Oct 29 20:00:37 2009
Errors in file /u01/app/oracle/admin/orcl3/bdump/orcl32_lgwr_10129.trc:
ORA-00471: DBWR process terminated with error
Thu Oct 29 20:00:38 2009
Shutting down instance (abort)
License high water mark = 102
Thu Oct 29 20:00:43 2009
Instance terminated by DBW2, pid = 10125
Thu Oct 29 20:00:43 2009
Instance terminated by USER, pid = 14882

对于这个问题，MOS上描述极为简单：Bug 4637902  OERI[kclfusion_1] in RAC。除了说明这个bug影响10.1.0.5、10.2.0.3和10.2.0.4，并在10.2.0.4.1、10.2.0.5和11.1.0.6中被fixed以外，对于错误的描述只有一句话，ORA-600[kclfusion_1]可能发生在RAC环境中。

由于缺少进一步的信息，如果碰到了这个问题，升级或打PSU可能是唯一的选择。