ORA-14452錯誤及解決方法

--找到锁住表的sid和serial#
select sid,serial#
from v$session
where sid=(select sid
              from v$lock  
             where id1= (select object_id
                           from user_objects  
                          where object_name=upper('tablename')));

--删除这个session
alter system kill session 'sid,serial#';
commit;