查看oracle数据库最近执行了哪些sql语句

SELECT b.sql_text, --content of SQL
       a.machine, --which machine run this code
       a.username,
       a.module,
       -- the method to run this SQL
       c.sofar / totalwork * 100,
       --conplete percent
       c.elapsed_seconds, --run time
       c.time_remaining --remain to run time
  FROM v$session a, v$sqlarea b, v$session_longops c
 WHERE a.sql_hash_value = b.hash_value(+)
   AND a.SID = c.SID(+)
   AND a.serial# = c.serial#(+)
--AND a.sid=139

SELECT  *
    FROM v$sql
   WHERE last_load_time IS NOT NULL
ORDER BY last_load_time DESC

----监控concurrent 正在执行的sql --
SELECT a.sid, a.serial#, b.sql_text
  FROM v$session a, v$sqltext b
 WHERE a.sql_address = b.address
 ORDER BY b.piece