oracle查看是否锁表语句

 select   p.spid,c.object_name,b.session_id,b.oracle_username,b.os_user_name,s.SQL_FULLTEXT, a.MACHINE,a.CLIENT_INFO,a.OSUSER
 from   v$process   p,
 v$session   a,   
 v$locked_object   b,
 v$sql s,
 all_objects   c   where   p.addr=a.paddr   and   a.process=b.process   and   c.object_id=b.object_id   and a.SQL_ID = s.SQL_ID