1. 查看哪个表被锁
select b.owner, b.object_name, a.session_id, a.locked_mode
  from v$locked_object a, dba_objects b
 where b.object_id = a.object_id;

?

?

2.查看是哪个session引起的
select b.username, b.sid, b.serial#, logon_time
  from v$locked_object a, v$session b
 where a.session_id = b.sid
 order by b.logon_time;

?

?

3.杀掉对应进程
alter system kill session 'SID,SERIAL';

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