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。

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.

youdao

如果锁文件存在，应该在重新启动服务器之前删除它。

If the lock file is present, delete it before restarting the server.

youdao

粗略一看，这好像使用了两次服务器循环，和前面的合作锁代码一样。

At first glance, this seems to take the same two server round-trips as our earlier cooperative locking code.

youdao