Oracle version:Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
os version:Linux x86 64-bit
oracle alert日志报错：
opiodr aborting process unknown ospid (19506) as a result of ORA-1092 Wed Jul 15 16:18:42 2015 ORA-1092 : opitsk aborting process Wed Jul 15 16:18:52 2015 opiodr aborting process unknown ospid (19555) as a result of ORA-1092 Wed Jul 15 16:18:52 2015 ORA-1092 : opitsk aborting process Wed Jul 15 16:18:52 2015 opiodr aborting process unknown ospid (19504) as a result of ORA-1092 Wed Jul 15 16:18:52 2015 ORA-1092 : opitsk aborting process Wed Jul 15 16:19:03 2015 Instance terminated by PMON, pid = 2238
操作系统报错日志：
Jul 15 16:18:27 allwincredit kernel: Out of memory: Kill process 2258 (oracle) score 46 or sacrifice child Jul 15 16:18:27 allwincredit kernel: Killed process 2258, UID 1101, (oracle) total-vm:7431020kB, anon-rss:9700kB, file-rss:1132084kB Jul 15 16:18:27 allwincredit kernel: java invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0 Jul 15 16:18:27 allwincredit kernel: java cpuset=/ mems_allowed=0-2 Jul 15 16:18:27 allwincredit kernel: Pid: 4217, comm: java Not tainted 2.6.32-358.el6.x86_64 #1
Linux下面有个特性叫OOM killer（Out Of Memory killer），这个东西会在系统内存耗尽的情况下跳出来，选择性的干掉一些进程以求释放一些内存。 这次很不幸，干掉了Oracle的进程。
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