查看被锁的表

 SELECT p.spid ,
 decode(locked_mode,0,'None',1,'Null',2,'Row share', 
  3,'Row Exclusive',4,'Share',5,'Share Row Exclusive',6,'Exclusive') lock_type,
  c.object_name ,
  b.session_id ,
  b.oracle_username,
  b.os_user_name,
  b.locked_mode, 
  a.sid,
  a.serial#,
  a.machine,
  a.action,
  to_char(a.logon_time,'yyyy/mm/dd hh24:mi')
  FROM v$process p,
  v$session a ,
  v$locked_object b,
  all_objects c
  WHERE p.addr =a.paddr
AND a.process =b.process
AND c.object_id=b.object_id；