RE: Lost PERFSTAT bridge scripts
- From: Wolfson Larry - lwolfs <lawrence.wolfson@xxxxxxxxxx>
- To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 29 Jul 2004 15:12:29 -0500
Jared I already did but I must have been half asleep(or more) because he
does say
"its impossible to report across a shutdown, but it is possible to reduce
the lost periods of time (10:00 to 10:15 and 10:20 to 11:00 in our example)
by automatically performing snapshots before shutdown and after startup. Its
easily done with BEFORE-SHUTDOWN and AFTER-STARTUP triggers."
I do use a script from Tim Gorman that works very well (below)
Larry
COL NAME FOR A30
/**********************************************************************
* File: sptrends.sql
* Type: SQL*Plus script
* Author: Tim Gorman (SageLogix, Inc.)
* Date: 15-Jul-2003
*
* Description:
* Query to display "trends" for specific statistics captured by
*the STATSPACK package, and display summarized totals daily and
*hourly as a deviation from average. The intent is to find the
*readings with the greatest positive deviation from the average
*value, as these are likely to be "periods of interest" for
*further research...
*
* Modifications:
*********************************************************************/
set echo off feedback off timing off pagesize 200 lines 130 trimout on
trimspool on verify off recsep off
col sort0 noprint
col day heading "Day"
col hr heading "Hour"
col value format 999,999,999,990 heading "Value"
col deviation format a100 heading "Relative Deviation from Average Value"
accept V_NBR_DAYS prompt "How many days of data to examine? "
prompt Some useful database statistics to search upon:
select rpad(' ',4,' ')||name name
from v$statname
where name like '%logical%'
or name like '%physical%'
or name like '%redo%'
or name like '%sort%'
or lower(name) like '%cpu%'
order by 1;
accept V_STATNAME prompt "What statistic? "
col spoolname new_value V_SPOOLNAME noprint
select replace(replace(replace(lower('&&V_STATNAME'),'
','_'),'(',''),')','') spoolname
from dual;
spool sptrends_&&V_SPOOLNAME
clear breaks computes
col value format 999,999,999,990 heading "Value"
prompt
prompt Daily trends for "&&V_STATNAME"...
select sort0,
day,
value,
rpad('*', decode(greatest(round(((value - (avg(value) over ()))/(avg(value)
over ()))*100,-1),0),
0, 0, round(((value - (avg(value) over ()))/(avg(value) over
()))*100,-1))/2,'*') deviation
from (select sort0,
day,
sum(value) value
from (select to_char(ss.snap_time, 'YYYYMMDD') sort0,
to_char(ss.snap_time, 'DD-MON') day,
s.snap_id,
s.name,
nvl(decode(greatest(s.value, nvl(lag(s.value) over (order by s.dbid,
s.instance_number, s.snap_id),0)),
s.value, s.value - lag(s.value) over (order by s.dbid, s.instance_number,
s.snap_id),
s.value), 0) value
from stats$sysstat s,
stats$snapshot ss
where ss.snap_id = s.snap_id
and ss.dbid = s.dbid
and ss.instance_number = s.instance_number
and ss.snap_time between (sysdate - &&V_NBR_DAYS) and sysdate
and s.name = '&&V_STATNAME')
group by sort0,
day)
order by sort0;
clear breaks computes
break on day skip 1 on report
col value format 999,999,990 heading "Value"
prompt
prompt Daily/hourly trends for "&&V_STATNAME"...
select sort0,
day,
hr,
value,
rpad('*', decode(greatest(round(((value - (avg(value) over ()))/(avg(value)
over ()))*100,-1),0),
0, 0, round(((value - (avg(value) over ()))/(avg(value) over
()))*100,-1))/2,'*') deviation
from(select sort0,
day,
hr,
name,
sum(value) value
from (select to_char(ss.snap_time, 'YYYYMMDDHH24') sort0,
to_char(ss.snap_time, 'DD-MON') day,
to_char(ss.snap_time, 'HH24')||':00' hr,
s.snap_id,
s.name,
nvl(decode(greatest(s.value, nvl(lag(s.value) over (order by s.dbid,
s.instance_number, s.snap_id),0)),
s.value, s.value - lag(s.value) over (order by s.dbid, s.instance_number,
s.snap_id),
s.value), 0) value
from stats$sysstat s,
stats$snapshot ss
where ss.snap_id = s.snap_id
and ss.dbid = s.dbid
and ss.instance_number = s.instance_number
and ss.snap_time between (sysdate - &&V_NBR_DAYS) and sysdate
and s.name = '&&V_STATNAME')
group by sort0,
day,
hr,
name)
order by sort0;
spool off
set verify on recsep each
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Jared Still
Sent: Thursday, July 29, 2004 3:04 PM
To: Oracle-L Freelists
Subject: Re: Lost PERFSTAT bridge scripts
On Thu, 2004-07-29 at 11:30, Wolfson Larry - lwolfs wrote:
> Last week I found a link to startup and shutdown triggers that generated
> snaps so Perfstat could keep track of info over a shutdown.
>
Nice idea. Please share when you find it again.
DB bounces mess up my pretty response time charts. :)
Jared
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