(1)查看哪个表被锁
select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id;
(2)查看是哪个session引起的
select b.username,b.sid,b.serial#,logon_time from v$locked_object a,v$session b where a.session_id = b.sid order by b.logon_time;
(3)杀掉对应进程
执行命令：alter system kill session '1025,41'; （注意中间的空格的问题）
其中1025为sid,41为serial#.