select o.owner,o.object_name,s.sid,s.serial#,s.USERNAME,s.STATUS,s.machine,s.PROGRAM,'alter system kill session ' || chr(39) || to_char(s.SID) || ',' || to_char( s.SERIAL# ) || chr(39) || ';' as cmd  
from v$locked_object l,dba_objects o ,v$session s  
where l.object_id　=　o.object_id  
  and l.session_id=s.sid   --and s.STATUS = 'ACTIVE'  
union  
  SELECT DISTINCT "SYS"."DBA_DDL_LOCKS"."OWNER",  
         "SYS"."DBA_DDL_LOCKS"."NAME",  
         "SYS"."V_$SESSION"."SID",  
         "SYS"."V_$SESSION"."SERIAL#",  
         "SYS"."V_$SESSION"."USERNAME",  
         "SYS"."V_$SESSION"."STATUS",  
         "SYS"."V_$SESSION"."MACHINE",  
         "SYS"."V_$SESSION"."PROGRAM",'alter system kill session '|| chr(39) || to_char("SYS"."V_$SESSION"."SID") || ',' || to_char( "SYS"."V_$SESSION"."SERIAL#" )  || chr(39) || ';' as cmd  
    FROM "SYS"."DBA_DDL_LOCKS","SYS"."V_$SESSION"  
   WHERE ( "SYS"."DBA_DDL_LOCKS"."SESSION_ID" = "SYS"."V_$SESSION"."SID" )  
       AND    ( SYS."V_$SESSION"."STATUS" = 'ACTIVE' )  
 

所有锁住的表查询出来之后，找到对应的表后的alter 语句，执行了就杀了该表的死锁进程；
该问题的原因：可能存在两个语句同时对该表做更新或删除操作；导致死锁；