Oracle查询当前连接的用户和执行的SQL

SELECT SE.sid,
       SE.serial#,
       PR.spid,
       SE.status,
       SUBSTR(SE.program, 1, 20) PROG,
       SUBSTR(SE.machine, 1, 30) MACH,
       SQ.sql_text
FROM v$session SE, v$sqlarea SQ, v$process PR
WHERE SE.paddr = PR.ADDR(+)
   AND SE.sql_address = SQ.address(+)
   AND schemaname <> 'SYS'
ORDER BY SE.sid