SELECT   sn.username, m.SID,sn.SERIAL#, m.TYPE,
         DECODE (m.lmode,
                 0, \'None\',
                 1, \'Null\',
                 2, \'Row Share\',
                 3, \'Row Excl.\',
                 4, \'Share\',
                 5, \'S/Row Excl.\',
                 6, \'Exclusive\',
                 lmode, LTRIM (TO_CHAR (lmode, \'990\'))
                ) lmode,
         DECODE (m.request,
                 0, \'None\',
                 1, \'Null\',
                 2, \'Row Share\',
                 3, \'Row Excl.\',
                 4, \'Share\',
                 5, \'S/Row Excl.\',
                 6, \'Exclusive\',
                 request, LTRIM (TO_CHAR (m.request, \'990\'))
                ) request,
         m.id1, m.id2
    FROM v$session sn, v$lock m
   WHERE (sn.SID = m.SID AND m.request != 0)         --存在锁请求，即被阻塞
      OR (    sn.SID = m.SID                         --不存在锁请求，但是锁定的对象被其他会话请求锁定
          AND m.request = 0
          AND lmode != 4
          AND (id1, id2) IN (
                        SELECT s.id1, s.id2
                          FROM v$lock s
                         WHERE request != 0 AND s.id1 = m.id1
                               AND s.id2 = m.id2)
         )
ORDER BY id1, id2, m.request;

通过以上查询知道了sid和 SERIAL#就可以开杀了
   alter system kill session \'sid,SERIAL#\';