RE: Timed_statistics, True or False

From: Jeffery Stevenson <jeff_at_mpv.com>
Date: Tue, 22 Aug 2000 08:26:36 -0500
Message-Id: <10597.115206@fatcity.com>

It is a dynamic option...just not on that version of Oracle.

Jeff S.

-----Original Message-----
From: root_at_fatcity.com [mailto:root_at_fatcity.com]On Behalf Of Weerd Kirsten, E.C. de
Sent: Tuesday, August 22, 2000 6:07 AM
To: Multiple recipients of list ORACLE-L Subject: RE: Timed_statistics, True or False

Hi,

I just did a :

alter system set timed_statistics = false ;

and got the following error :

alter system set timed_statistics = false

                 *

ERROR at line 1:
ORA-02065: illegal option for ALTER SYSTEM

Running Oracle 7.2.3 on HP-UX 10.20
Is this not a dynamic option ???

Greets,

Kirsten

> -----Original Message-----
> From: Rachel Carmichael [SMTP:carmichr_at_hotmail.com]
> Sent: Tuesday, August 22, 2000 11:08 AM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: Timed_statistics, True or False
>
> You lose some statistical information, useful in finding performance and
> other problems. So.... if you turn it off (and you should on HP-UX), and
> you
> have a problem, you would turn it on, wait for the problem to re-occur
> (and
> do bstat/estat and investigation) and turn it off.
>
> So in effect, if you have problems, it will take you somewhat longer
> (possibly) to resolve them
>
> In your case, I would turn it off.
>
>
> Rachel
>
>
> >From: "Weerd Kirsten, E.C. de" <Kirsten.deWeerd_at_Oranjewoud.nl>
> >Reply-To: ORACLE-L_at_fatcity.com
> >To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> >Subject: RE: Timed_statistics, True or False
> >Date: Mon, 21 Aug 2000 23:36:38 -0800
> >
> >I'm running Oracle 7.2.3 on HP-UX 10.20 and frankly don't like the idea
> of
> >a
> >possible performance degradation of 12% because of one parameter set
> TRUE.
> >
> >But, new as I still am, can anyone tell me : What exqctly do I loose when
> >turning this timed_statistics to FALSE ???
> >
> >Thanx for the info.
> >
> >Greets,
> >
> >
> >Kirsten
> >
> > > -----Original Message-----
> > >
> > > Winnie,
> > >
> > > With one notable exception you are right. For some reason, on HP-UX
> > > systems,
> > >
> > > turning on timed_statistics can cause a performance degradation that
> is
> > > noticeable (I've heard up to 12%)
> > >
> > > Rachel
> > >
> >--
> >Author: Weerd Kirsten, E.C. de
> > INET: Kirsten.deWeerd_at_Oranjewoud.nl
> >
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> Author: Rachel Carmichael
> INET: carmichr_at_hotmail.com
>
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--
Author: Weerd Kirsten, E.C. de
  INET: Kirsten.deWeerd_at_Oranjewoud.nl

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Received on Tue Aug 22 2000 - 08:26:36 CDT