客户的数据库出现ORA-600错误，错误函数为1265。
数据库版本为10.2.0.4 for Linux，错误信息为：
Fri Aug 26 22:00:11 2011
Errors in file /opt/app/oracle/admin/orcl/udump/orcl1_ora_16655.trc:
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
Fri Aug 26 22:00:13 2011
Errors in file /opt/app/oracletb/admin/orcl/udump/orcl1_ora_16655.trc:
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
Fri Aug 26 22:00:13 2011
Trace dumping is performing id=[cdmp_20110826220013]
Fri Aug 26 22:00:14 2011
Errors in file /opt/app/oracle/admin/orcl/udump/orcl1_ora_16655.trc:
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-06512: at "USER1.P_PRO", line 5
ORA-04088: error during execution of trigger 'USER1.P_PRO'
Fri Aug 26 22:00:15 2011
Errors in file /opt/app/oracle/admin/orcl/udump/orcl1_ora_16655.trc:
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-06512: at "USER1.P_PRO ", line 5
ORA-04088: error during execution of trigger 'USER1.P_PRO'
ORA-06512: at "USER1.U_PRO ", line 25
Fri Aug 26 22:00:17 2011
Errors in file /opt/app/oracle/admin/orcl/udump/orcl1_ora_16655.trc:
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-02067: transaction or savepoint rollback required
Fri Aug 26 22:00:18 2011
Errors in file /opt/app/oracle/admin/orcl/udump/orcl1_ora_16655.trc:
ORA-00600: internal error code, arguments: [17281], [600], [0x2E134EEC0], [], [], [], [], []
ORA-00600: internal error code, arguments: [1265], [0x42180EA78], [], [], [], [], [], []
ORA-02067: transaction or savepoint rollback required
这个错误是ORA-600[1265]错误引发的，随后还出现了ORA-600[17281]、ORA-4088和ORA-2067错误。其中ORA-2067的描述为：
$ oerr ora 2067
02067, 00000, "transaction or savepoint rollback required"
// *Cause: A failure (typically a trigger or stored procedure with multiple
// remote updates) occurred such that the all-or-nothing execution
// of a previous Oracle call cannot be guaranteed.
// *Action: rollback to a previous savepoint or rollback the transaction
// and resubmit.
从这个描述和Oracle的报错信息不难判断，Oracle在通过触发器更新远端表时引发了这个600错误。
根据Oracle的MOS文档Bug 5655419 Distributed transaction hits ORA-600:[1265] or ORA-600:[k2gget: downgrade] in 10.2的描述，这个错误和分布式事务有关，确认影响的版本就是当前环境的10.2.0.4。这个错误的产生一般与窗口维护有关，可以看到问题的发生时刻恰好是22点，从这个时刻开始，Oracle进入维护窗口，进行空间回收统计信息收集等后台工作，显然就是因为窗口的变化导致了这个错误的产生。
Oracle在11.1.0.6中FIXED了这个bug。除了版本升级外，可以考虑将包含分布式事务修改的程序放到远离时间窗口改变时间。