The frequency at which PMON provides SERVICE_UPDATE information varies according to the workload of the instance.

PMON提供服务更新的频率依据实例负载的不同有所区别。

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For a process failure on Oracle, no human intervention is required, as the Oracle PMON background process will periodically monitor for these aborted processes.

对于Oracle上的进程失败，无需任何人工干预，就像OraclePMON后台进程会定期监视这些异常终止的进程那样。

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For user and server processes, PMON will release the locks held by users, roll back every uncommitted transaction, and release any resources this process is using.

而对于用户和服务器进程，PMON将释放用户持有的锁，回滚每个未提交事件，并释放该进程正在使用的所有资源。

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For user and server processes, PMON will release the locks held by users, roll back every uncommitted transaction, and release any resources this process is using.

而对于用户和服务器进程，PMON将释放用户持有的锁，回滚每个未提交事件，并释放该进程正在使用的所有资源。

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