客户的10.2.0.1 RAC for AIX数据库在关闭一个节点时碰到这个错误。
告警日志中信息如下：
Tue Jan 10 21:11:42 2012 Shutting down instance (immediate) License high water mark = 721 Tue Jan 10 21:11:42 2012 Stopping Job queue slave processes Tue Jan 10 21:11:42 2012 Job queue slave processes stopped ALL dispatchers AND shared servers shutdown Tue Jan 10 21:11:52 2012 PMON failed TO acquire latch, see PMON dump PMON failed TO acquire latch, see PMON dump PMON failed TO acquire latch, see PMON dump Tue Jan 10 21:12:04 2012 PMON failed TO acquire latch, see PMON dump PMON failed TO acquire latch, see PMON dump Tue Jan 10 21:12:12 2012 Shutting down instance (abort) License high water mark = 721 Tue Jan 10 21:12:13 2012 Errors IN file /u01/app/oracle/admin/wdyx/udump/wdyx1_ora_1434094.trc: ORA-27300: OS system dependent operation:invalid_process failed WITH STATUS: 0 ORA-27301: OS failure message: Error 0 ORA-27302: failure occurred at: skgpstime3 ORA-27144: attempt TO KILL process failed |
显然SHUTDOWN IMMEDIATE无法正常关闭数据库，必须使用SHUTDOWN ABORT来完成数据库的关闭操作，但是SHUTDOWN ABORT在关闭时引发了ORA-27144错误。
在MOS文档The following Errors are reported during Shutdown Immediate: ORA-27300, ORA-27301, ORA-27302, ORA-27144 [ID 1186504.1]描述了这个问题，Oracle给出的建议是直接忽略这个问题。
文档中出现这个错误的是10.2.0.4版本，但是在出现ORA-27144错误后能正常关闭，而不像当前10.2.0.1版本这样，在SHUTDOWN IMMEDIATE时出现PMON failed to acquire latch信息，而SHUTDOWN ABORT后才出现ORA-27144错误。
看来升级到高版本虽然不能完全的解决这个问题，但是至少可以解决SHUTDOWN IMMEDIATE无法正常关闭的问题。