--鎖表查詢，需要有足夠多的許可權
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; 


--殺死鎖表程序，需要有足夠多的許可權
ALTER system kill session '461, 56865';