set lines 1000 pages 9999 
column sid format 9999 
column serial for 999999
column status format a15
column username format a10 
column sql_text format a80
column module format a30
col program for a30
col SQL_EXEC_START for a20

  SELECT * FROM
       (SELECT status,inst_id,sid,SESSION_SERIAL# as Serial,username,sql_id,SQL_PLAN_HASH_VALUE,
     MODULE,program,
         TO_CHAR(sql_exec_start,'dd-mon-yyyy hh24:mi:ss') AS sql_exec_start,
         ROUND(elapsed_time/1000000)                      AS "Elapsed (s)",
         ROUND(cpu_time    /1000000)                      AS "CPU (s)",
         substr(sql_text,1,30) sql_text
       FROM gv$sql_monitor where module not like '%emagent%'
       ORDER BY sql_exec_start  desc
       )
     WHERE rownum<=20;