Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
Home -> Community -> Mailing Lists -> Oracle-L -> Re: pga_aggregate_target and a memory leak
A comment I picked up from Tom Kyte's
Masterclass in Copenhagen last week was
that there is an effective limit of 1GB to
P_A_T - and although a single session is
supposed to be allowed 5% of the P_A_T,
you could get about 90MB. So there are
some funny things going on in that area
which still need fixing.
It's a bit tough for big systems, as I've
found that the optimizer seems to be
much smarter about memory user and
access paths when P_A_T and W_S_P
are set.
What's the book about ?
Regards
Jonathan Lewis
http://www.jlcomp.demon.co.uk
The educated person is not the person
who can answer the questions, but the
person who can question the answers -- T. Schick Jr
Next public appearance2:
March 2004 Hotsos Symposium - Keynote
March 2004 Charlotte NC - OUG Tutorial
April 2004 Iceland
One-day tutorials:
http://www.jlcomp.demon.co.uk/tutorial.html
Three-day seminar:
see http://www.jlcomp.demon.co.uk/seminar.html
____UK___February
The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html
> Replies in line...
>
> - Kirti
>
> --- Jared.Still_at_radisys.com wrote:
> > Kirti, you're back!
>
> Thanks. Found some slack time from routine DBA work!
>
> >
> > Must have finished the book. :)
>
> Not yet.. Its tough..
>
>
>
> >
> > Re the PGA problems, what was the value for 'over allocation count' in
> > v$pgastat?
>
> Actually, I never bothered to look at v$pgastat. Should have.. and will,
when we do some more
> testing next week..
>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jonathan Lewis INET: jonathan_at_jlcomp.demon.co.uk Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).Received on Wed Jan 21 2004 - 16:14:27 CST