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vg/sp_top_events.sql Normal file
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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
set verify off
set pages 10000
set lines 250
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;