转自:https://blog.csdn.net/u013015629/article/details/48005763 在PL/SQL中操作数据表时,长时间没反应,并且编辑某个表中数据时,出现“record is locked by another user”等情况,即出现了死锁. 下面,简述解决办法: step1.PL/SQL查看锁: select t2.username, t2.sid, t2.serial#,t2.logon_time from v$locked_object t1,v$…