Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> RE: Timed_statistics, True or False

RE: Timed_statistics, True or False

From: Lyall Barbour <lbarbour_at_stanford.edu>
Date: Tue, 22 Aug 2000 07:28:25 -0700
Message-Id: <10597.115217@fatcity.com>

--=====================_690252130==_.ALT
Content-Type: text/plain; charset="us-ascii"; format=flowed

I believe if you want to set timed_statistics on for everyone, you have to do that through the initialization parameters. But you can set it for your session.

ALTER SESSION SET TIMED_STATISTICS=FALSE; should do the trick.

Good luck,
Lyall Barbour

At 03:07 AM 8/22/00 -0800, you wrote:
>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
> > >
> > >Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> > >San Diego, California -- Public Internet access / Mailing Lists
> > >--------------------------------------------------------------------
> > >To REMOVE yourself from this mailing list, send an E-Mail message
> > >to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> > >the message BODY, include a line containing: UNSUB ORACLE-L
> > >(or the name of mailing list you want to be removed from). You may
> > >also send the HELP command for other information (like subscribing).
> >
> > ________________________________________________________________________
> > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
> >
> > --
> > Author: Rachel Carmichael
> > INET: carmichr_at_hotmail.com
> >
> > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> > San Diego, California -- Public Internet access / Mailing Lists
> > --------------------------------------------------------------------
> > To REMOVE yourself from this mailing list, send an E-Mail message
> > to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> > the message BODY, include a line containing: UNSUB ORACLE-L
> > (or the name of mailing list you want to be removed from). You may
> > also send the HELP command for other information (like subscribing).
>--
>Author: Weerd Kirsten, E.C. de
> INET: Kirsten.deWeerd_at_Oranjewoud.nl
>
>Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
>San Diego, California -- Public Internet access / Mailing Lists
>--------------------------------------------------------------------
>To REMOVE yourself from this mailing list, send an E-Mail message
>to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
>the message BODY, include a line containing: UNSUB ORACLE-L
>(or the name of mailing list you want to be removed from). You may
>also send the HELP command for other information (like subscribing).

--=====================_690252130==_.ALT
Content-Type: text/html; charset="us-ascii"

<html>
I believe if you want to set timed_statistics on for everyone, you have to do that through the initialization parameters.&nbsp; But you can set it for your session.<br>
<br>
ALTER <b>SESSION </b>SET TIMED_STATISTICS=FALSE;<br> <br>
should do the trick.<br>
<br>
Good luck,<br>
Lyall Barbour<br>
<br>
At 03:07 AM 8/22/00 -0800, you wrote:<br> <blockquote type=cite cite>Hi,<br>
<br>
I just did a :<br>
<br>
alter system set timed_statistics = false ;<br> <br>
and got the following error :<br>
<br>
alter system set timed_statistics = false<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *<br>
ERROR at line 1:<br>
ORA-02065: illegal option for ALTER SYSTEM<br> <br>
Running Oracle 7.2.3 on HP-UX 10.20<br>
Is this not a dynamic option ???<br>
<br>
Greets,<br>
<br>
Kirsten<br>
<br>
&gt; -----Original Message-----<br>

&gt; From:<x-tab>&nbsp;</x-tab>Rachel Carmichael
[SMTP:carmichr_at_hotmail.com]<br>
&gt; Sent:<x-tab>&nbsp;</x-tab>Tuesday, August 22, 2000 11:08 AM<br>
&gt; To:<x-tab>&nbsp;&nbsp;&nbsp;</x-tab>Multiple recipients of list ORACLE-L<br>
&gt; Subject:<x-tab>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</x-tab>RE: Timed_statistics, True or False<br>
&gt; <br>
&gt; You lose some statistical information, useful in finding performance and <br>
&gt; other problems. So.... if you turn it off (and you should on HP-UX), and<br>
&gt; you <br>
&gt; have a problem, you would turn it on, wait for the problem to re-occur<br>
&gt; (and <br>
&gt; do bstat/estat and investigation) and turn it off.<br>
&gt; <br>
&gt; So in effect, if you have problems, it will take you somewhat longer
<br>
&gt; (possibly) to resolve them<br>
&gt; <br>
&gt; In your case, I would turn it off.<br>
&gt; <br>
&gt; <br>
&gt; Rachel<br>
&gt; <br>
&gt; <br>
&gt; &gt;From: &quot;Weerd Kirsten, E.C. de&quot;
&lt;Kirsten.deWeerd_at_Oranjewoud.nl&gt;<br>
&gt; &gt;Reply-To: ORACLE-L_at_fatcity.com<br>
&gt; &gt;To: Multiple recipients of list ORACLE-L
&lt;ORACLE-L_at_fatcity.com&gt;<br>
&gt; &gt;Subject: RE: Timed_statistics, True or False<br>
&gt; &gt;Date: Mon, 21 Aug 2000 23:36:38 -0800<br>
&gt; &gt;<br>
&gt; &gt;I'm running Oracle 7.2.3 on HP-UX 10.20 and frankly don't like
the idea<br>
&gt; of <br>
&gt; &gt;a<br>
&gt; &gt;possible performance degradation of 12% because of one parameter
set<br>
&gt; TRUE.<br>
&gt; &gt;<br>
&gt; &gt;But, new as I still am, can anyone tell me : What exqctly do I
loose when<br>
&gt; &gt;turning this timed_statistics to FALSE ???<br>
&gt; &gt;<br>
&gt; &gt;Thanx for the info.<br>
&gt; &gt;<br>
&gt; &gt;Greets,<br>
&gt; &gt;<br>
&gt; &gt;<br>
&gt; &gt;Kirsten<br>
&gt; &gt;<br>
&gt; &gt; &gt; -----Original Message-----<br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; Winnie,<br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; With one notable exception you are right. For some reason,
on HP-UX<br>
&gt; &gt; &gt; systems,<br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; turning on timed_statistics can cause a performance
degradation that<br>
&gt; is<br>
&gt; &gt; &gt; noticeable (I've heard up to 12%)<br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; Rachel<br>
&gt; &gt; &gt;<br>
&gt; &gt;--<br>
&gt; &gt;Author: Weerd Kirsten, E.C. de<br>
&gt; &gt;&nbsp;&nbsp; INET: Kirsten.deWeerd_at_Oranjewoud.nl<br>
&gt; &gt;<br>
&gt; &gt;Fat City Network Services&nbsp;&nbsp;&nbsp; -- (858)
538-5051&nbsp; FAX: (858) 538-5051<br>
&gt; &gt;San Diego, California&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Public Internet access / Mailing Lists<br>
&gt;
&gt;--------------------------------------------------------------------<br>
&gt; &gt;To REMOVE yourself from this mailing list, send an E-Mail
message<br>
&gt; &gt;to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in<br>
&gt; &gt;the message BODY, include a line containing: UNSUB ORACLE-L<br>
&gt; &gt;(or the name of mailing list you want to be removed from).&nbsp; You may<br>
&gt; &gt;also send the HELP command for other information (like subscribing).<br>
&gt; <br>
&gt;
________________________________________________________________________<br>
&gt; Get Your Private, Free E-mail from MSN Hotmail at <a href="http://www.hotmail.com/" eudora="autourl">http://www.hotmail.com</a><br>
&gt; <br>
&gt; -- <br>
&gt; Author: Rachel Carmichael<br>
&gt;&nbsp;&nbsp; INET: carmichr_at_hotmail.com<br>
&gt; <br>
&gt; Fat City Network Services&nbsp;&nbsp;&nbsp; -- (858) 538-5051&nbsp;
FAX: (858) 538-5051<br>
&gt; San Diego, California&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Public Internet access / Mailing Lists<br> &gt;
--------------------------------------------------------------------<br>
&gt; To REMOVE yourself from this mailing list, send an E-Mail message<br>
&gt; to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in<br>
&gt; the message BODY, include a line containing: UNSUB ORACLE-L<br> &gt; (or the name of mailing list you want to be removed from).&nbsp; You may<br>
&gt; also send the HELP command for other information (like subscribing).<br>
-- <br>
Author: Weerd Kirsten, E.C. de<br>
&nbsp; INET: Kirsten.deWeerd_at_Oranjewoud.nl<br> <br>
Fat City Network Services&nbsp;&nbsp;&nbsp; -- (858) 538-5051&nbsp; FAX: (858) 538-5051<br>
San Diego, California&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Public Internet access / Mailing Lists<br>
--------------------------------------------------------------------<br>
To REMOVE yourself from this mailing list, send an E-Mail message<br> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in<br> Received on Tue Aug 22 2000 - 09:28:25 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US