set linesize 260
set pagesize 1000
col sid for 99999
col spid for a8
col event for a30
col module for a35
col machine for a15
col username for a10
col holder for a10
col final for a10
col sql_id for a15
col exec_gets for 99999999
col seconds for a5
col object_id for 999999
col param for a30
col sql_text for a6
col PGA_USE for 9999
alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
select a.sid,
       a.username,
       a.machine,
       a.module,
       a.event,
       a.sql_id,
       round(decode(c.executions,0,buffer_gets,buffer_gets/executions)) exec_gets,
       a.ROW_WAIT_OBJ# object_id,
       a.BLOCKING_INSTANCE||'_'||a.blocking_session  holder,
       a.FINAL_BLOCKING_INSTANCE||'_'||a.FINAL_BLOCKING_SESSION final,
       to_char(LAST_CALL_ET) seconds,
       a.p1 || '_' || a.p2 || '_' || a.p3 param,
       b.spid,
       trunc(b.PGA_USED_MEM / 1024 / 1024,2) as PGA_USE,
       substr(c.sql_text,0,6) sql_text
  from v$session a, v$process b,v$sql c
 where a.paddr = b.addr(+)
   and a.status = 'ACTIVE'
   and not (a.type = 'BACKGROUND' and a.state = 'WAITING' and
        a.wait_class = 'Idle')
   and a.sql_id=c.sql_id(+)
   and a.sql_child_number=c.CHILD_NUMBER(+)
   and a.sid='&SID'
 order by a.sql_id, a.machine
/

用这个sql查查看。