set echo on
/*
*
*  Author  : Vishal Gupta
*  Purpose : Display top wait events from STATSPACK
*
*  Syntax  : @file_name 
*
*  Revision History:
*  ===================
*  Date       Author        Description
*  ---------  ------------  -----------------------------------------
*  15-May-07  Vishal Gupta  First Draft
*  
*/
set echo off
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set pages 10000
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TTITLE CENTER "T O P   E V E N T S   T R E N D" -
SKIP 1 CENTER "################################" - 
SKIP 1 CENTER ""

COLUMN snap_time            HEADING "Snap Time"              FORMAT a17
COLUMN E1                   HEADING "1st|Event"                  FORMAT a30
COLUMN E2                   HEADING "2nd|Event"                  FORMAT a30
COLUMN E3                   HEADING "3rd|Event"                  FORMAT a30
COLUMN E4                   HEADING "4th|Event"                  FORMAT a30
COLUMN E5                   HEADING "5th|Event"                  FORMAT a30
COLUMN T1                   HEADING "1st|Time"                  FORMAT 9999  noprint
COLUMN T2                   HEADING "2nd|Time"                  FORMAT 9999  noprint
COLUMN T3                   HEADING "3rd|Time"                  FORMAT 9999  noprint
COLUMN T4                   HEADING "4th|Time"                  FORMAT 9999  noprint
COLUMN T5                   HEADING "5th|Time"                  FORMAT 9999  noprint
COLUMN P1                   HEADING "1st|%age"                  FORMAT a3    
COLUMN P2                   HEADING "2nd|%age"                  FORMAT a3    
COLUMN P3                   HEADING "3rd|%age"                  FORMAT a3    
COLUMN P4                   HEADING "4th|%age"                  FORMAT a3    
COLUMN P5                   HEADING "5th|%age"                  FORMAT a3    


WITH topevents AS
  (SELECT /*+ first_rows */ 
     s.snap_time,
     se.event,
     ROUND((se.time_waited_micro -se2.time_waited_micro) / 1000000) AS
  time_waited_delta,
     dense_rank() over(PARTITION BY s.snap_time
   ORDER BY se.time_waited_micro -se2.time_waited_micro DESC) rank
   FROM stats$system_event se2,
        stats$system_event se,
        stats$snapshot s
   WHERE s.snap_id = se.snap_id
   AND s.dbid = se.dbid
   AND s.instance_number = se.instance_number
--   AND to_char(s.snap_time,    'hh24MI') BETWEEN 0800  AND 0900
   AND se2.snap_id = s.snap_id -1
   AND s.dbid = se2.dbid
   AND s.instance_number = se2.instance_number
   AND se.event = se2.event
   AND se.event NOT IN (select name from v$event_name where wait_class = 'Idle')
)
SELECT TO_CHAR(snap_time,'dd-mm-yy hh24:mi:ss') snap_time,
  MAX(decode(rank,   1,   event)) E1,
  SUM(decode(rank,   1,   time_waited_delta,   0)) T1,
  ROUND(SUM(decode(rank,   1,   time_waited_delta,   0)) /sum(time_waited_delta) *100 ,2)||'%'  P1,
  MAX(decode(rank,   2,   event)) E2,
  SUM(decode(rank,   2,   time_waited_delta,   0)) T2,
  ROUND(SUM(decode(rank,   2,   time_waited_delta,   0)) /sum(time_waited_delta) *100 ,2)||'%'  P2,
  MAX(decode(rank,   3,   event)) E3,
  SUM(decode(rank,   3,   time_waited_delta,   0)) T3,
  ROUND(SUM(decode(rank,   3,   time_waited_delta,   0)) /sum(time_waited_delta) *100 ,2)||'%'  P3,
  MAX(decode(rank,   4,   event)) E4,
  SUM(decode(rank,   4,   time_waited_delta,   0)) T4,
  ROUND(SUM(decode(rank,   4,   time_waited_delta,   0)) /sum(time_waited_delta) *100 ,2)||'%'  P4,
  MAX(decode(rank,   5,   event)) E5,
  SUM(decode(rank,   5,   time_waited_delta,   0)) T5,
  ROUND(SUM(decode(rank,   5,   time_waited_delta,   0)) /sum(time_waited_delta) *100 ,2)||'%'  P5
FROM topevents t1
GROUP BY snap_time
ORDER BY snap_time DESC;