小技巧：oracle锁表杀进程

 查询锁住进程

SELECT object_name, machine, s.sid, s.serial#  
FROM gv$locked_object l, dba_objects o, gv$session s  
WHERE l.object_id　= o.object_id  
AND l.session_id = s.sid;

解锁语句

alter system kill session 'sid, serial#';  
例子如下：
ALTER system kill session '1222, 31221';