Oracle 查询锁表和解锁

select t2.username,t2.sid,t2.serial#,t2.logon_time,t2.OSUSER,t2.PROGRAM,t2.machine,t2.status from
v$locked_object t1,v$session t2 where t1.session_id=t2.sid
order by t2.logon_time;

alter system kill session 'sid, serial#';