查出哪些對象被鎖：
select a.,b. from v$locked_object a,dba_objects b where b.object_id = a.object_id
查出鎖住對象的session ID 和serial#：
select t2.username,t2.sid,t2.serial#,t2.logon_time
from vlockedobjectt1,vsession t2
where t1.session_id=t2.sid order by t2.logon_time
殺死session：
alter system kill session ‘ID,Serial#’