oracle删除锁表

以dba登陆
1.查看哪个表被锁:
  select b.owner,b.object_name,l.session_id,l.locked_mode
  from v$locked_object l, dba_objects b
  where b.object_id=l.object_id;
2.查看被锁表的sid 和serial# :
  select t2.username,t2.sid,t2.serial#,t2.logon_time
  from v$locked_object t1,v$session t2
  where t1.session_id=t2.sid order by t2.logon_time;
3.执行下面的语句:
  alter system kill session 'sid,serial#';