Re: sga
Date: Fri, 12 Jun 2009 17:00:40 +0200
Message-ID: <8580d4110906120800p10bb22a3jf34d0a243538168c_at_mail.gmail.com>
My recommendation is that you do not "tune" anything until you know what it is that slows you down and what it is that is slow. Just fixing a ratio may make the ratio fine and your end users unhappy. Mathias
On Fri, Jun 12, 2009 at 4:40 PM, Zelli, Brian <Brian.Zelli_at_roswellpark.org>wrote:
> Yes. This application has the ability to build queries with drop down
> selects and then builds this one huge sql to execute. There are several
> forms that do this so it's not just one but they are complaining most about
> this one form.
>
> If I need to change the library cache, which parameter would that be?
> Again, I haven't really tuned much in 10g. I was a 7 - 9 junkie and it just
> seems like a lot of these parms are hands off.....
>
>
> ciao,
>
> Brian
>
>
>
> *Brian J. Zelli,* Ed.M.
>
> Sr. Database Administrator
>
> Enterprise Application/Systems Integration
>
> Information Technology - Roswell Park Cancer Institute
>
> phone: (716) 845-4460 email: brian.zelli_at_roswellpark.org
>
>
>
> ------------------------------
> *From:* Martin Berger [mailto:martin.a.berger_at_gmail.com]
> *Sent:* Friday, June 12, 2009 10:27 AM
> *To:* Zelli, Brian
> *Cc:* Andrew Kerber; Mathias Magnusson; oracle-l_at_freelists.org
> *Subject:* Re: sga
>
> Brian,
> I read this as 'all the SQLs are unique, and really big' - am I right?
>
> if they are unique, they MUST be hard parsed every time.
> In such a case, it might be worth reducing the Library Cache, to reduce the
> time every process needs to search through it until it does not find a
> preparsed object and parses itselve.
>
> just an idea, totally untested, still without enough understanding of the
> setup.
>
> br
> Martin
>
>
> On Fri, Jun 12, 2009 at 15:37, Zelli, Brian <Brian.Zelli_at_roswellpark.org>wrote:
>
>> The form for the application does build some really crappy dynamic sql, 2
>> pages worth. The vendor said "oh you have to add some indexes" but that
>> doesn't look to be the case. I seem to be leaning toward the cursor issue
>> myself. I'll see what it is set to.
>>
>>
>>
>
>
>
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-- http://www.freelists.org/webpage/oracle-lReceived on Fri Jun 12 2009 - 10:00:40 CDT