recode is locked by another user

1、查看锁 
select t2.username,t2.sid,t2.serial#,t2.logon_time from v$locked_object t1,v$session t2 where t1.session_id=t2.sid ; 
2、Kill 
--alter system kill session 'sid,serial#'; 
alter system kill session '151,14678'