ORA-600(kffmXpGet)错误
第一次碰到Exadata上的bug。
数据库环境Exadata V2-2，数据库版本为11.2.0.2，错误信息为：
Wed Apr 25 11:32:35 2012
Errors in file /u01/app/oracle/diag/rdbms/ods/orcl2/trace/orcl2_ora_9495.trc (incident=304808):
ORA-00600: internal error code, arguments: [kffmXpGet], [145], [69784], [], [], [], [], [], [], [], [], []
ORA-03135: connection lost contact
Incident details in: /u01/app/oracle/diag/rdbms/orcl/orcl2/incident/incdir_304808/orcl2_ora_9495_i304808.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
opidcl aborting process tb unknown ospid (9495) as a result of ORA-600
Wed Apr 25 11:32:36 2012
Dumping diagnostic data in directory=[cdmp_20120425113236], requested by (instance=2, sid=9495), summary=[incident=304808].
Wed Apr 25 11:32:36 2012
Sweep [inc][304808]: completed
Sweep [inc2][304808]: completed
Wed Apr 25 11:32:39 2012
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl2/trace/orcl2_pmon_10797.trc (incident=302224):
ORA-00600: internal error code, arguments: [kffmXpGet], [181], [87276], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/oracle/diag/rdbms/orcl/orcl2/incident/incdir_302224/orcl2_pmon_10797_i302224.trc
Dumping diagnostic data in directory=[cdmp_20120425113240], requested by (instance=2, sid=10797 (PMON)), summary=[incident=302224].
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl2/trace/orcl2_pmon_10797.trc:
ORA-00600: internal error code, arguments: [kffmXpGet], [181], [87276], [], [], [], [], [], [], [], [], []
PMON (ospid: 10797): terminating the instance due to error 472
Wed Apr 25 11:32:41 2012
opiodr aborting process unknown ospid (11248) as a result of ORA-1092
Wed Apr 25 11:32:41 2012
opiodr aborting process unknown ospid (1967) as a result of ORA-1092
Wed Apr 25 11:32:42 2012
ORA-1092 : opitsk aborting process
Wed Apr 25 11:32:43 2012
License high water mark = 573
Instance terminated by PMON, pid = 10797
USER (ospid: 8755): terminating the instance
Instance terminated by USER, pid = 8755
由于ORA-600[kffmXpGet]错误的出现，最终出现了ORA-1092的错误，并致使opitsk进程退出，导致数据库实例崩溃。
Oracle在MOS文档Bug 12387467 instance crash by ORA-600 [kffmxpget]中描述了这个问题，确认影响的版本为11.2.0.1、11.2.0.2、11.2.0.3，Oracle在11.2.0.2的Bundle Patch 16 for Exadata以及11.2.0.3 Bundle Patch 5 for Exadata中fixed了这个问题，Oracle计划在11.2.0.4和12.1中彻底Fixed该问题。
这个错误只会发生在Exadata中，因为导致错误的原因和Smart Scan有关。当会话执行Smart Scan操作时使用了Ctrl + C中止该操作，会导致PMON进程出现这个600错误。Oracle建议在执行数据文件的SHRINK操作前，中止并退出所有执行Exadata Smart Scan的会话。