Oracle 锁表查询及解锁

--锁表查询SQL
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;

--释放SESSION SQL: 
--alter system kill session 'sid, serial#'; 
ALTER system kill session '235, 49711';