针对第一版本,在设备口不存在的情况下,给予系统提示,避免出现程序进入死锁.-against the first version of the equipment I did not exist under the circumstances, given system suggest that the entry procedures to avoid deadlock.

用于检查实时监控数据库是否产生死锁问题，并在死锁时显示产生死锁的语句-Real-time monitoring is used to check whether the database deadlock questions and displays deadlock deadlock statement