查看该时间段awr报告，出现高负载现象，造成系统hang住

同时出现cursor mutex S与high version count for an insert into sys.aud$现象

查找oralce的mos文档：

描述如下：

Bug 11936699 Abstract: WAIT TIME OF LIBRARY CACHE LOCK INCREASES DUE TO MANY CHILD CURSORS OF SYS.AUD$

处理方法： 升级11.2.0.3以上，并打相应补丁

Apply patches: 10151017, 9944129, and 10636231 if available for version / platform OR Apply 11.2.0.3 patchset which includes all 3 fixes

ITPub博客

Cursor Mutex S Waits等待事件引发hang