Oralce Oracle-XEでテーブルにかかったロックを外すには？

SELECT DO.OWNER || '.' || DO.OBJECT_NAME AS OBJECT,
  DECODE(LO.LOCKED_MODE,
     1, 'NULL',
     2, '行共有(SS)',
     3, '行排他(SX)',
     4, '共有(S)',
     5, '共有行排他(SRX)',
     6, '排他(X)',
     '???' ) AS LOCKED_MODE,
  TO_CHAR(L.CTIME / 60,'99990.9') AS MIN,
  LO.ORACLE_USERNAME,
  LO.OS_USER_NAME,
  LO.PROCESS,
  S.SID,
  S.SERIAL#
FROM DBA_OBJECTS DO, V$LOCKED_OBJECT LO, V$LOCK L, V$SESSION S
WHERE DO.OBJECT_ID = LO.OBJECT_ID AND
  LO.SESSION_ID = L.SID AND
  LO.XIDSQN = L.ID2 AND
  LO.PROCESS = S.PROCESS AND
  LO.XIDUSN > 0;

 ALTER SYSTEM KILL SESSION '[SID],[SERIAL#]';

 ALTER SYSTEM KILL SESSION '93,45631';