cursor: pin S wait on X等待事件

本文探讨了 Oracle 数据库中 Mutex 等待事件的问题,该事件发生在请求互斥锁进行与针相关的共享操作(如执行游标)时,但由于另一个会话独占持有互斥锁而无法获得。文章提供了故障排查思路及解决方案。

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A session waits on this event when requesting a mutex for sharable operations related to pins (such as executing a cursor), but the mutex cannot be granted because it is being held exclusively by another session (which is most likely parsing the cursor). This is a replacement for library cache pin waits in prior versions of Oracle. Solutions Solutions for mutex wait problems are very similar to each other. See Analysis of Waits on Mutexes for more information and troubleshooting ideas.
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