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Home -> Community -> Mailing Lists -> Oracle-L -> Re: How windows manage memory: oracle
Hi Paul,
Thanks for the tip on sysinternals--great stuff!
PB
--- Paul Drake <discgolfdba_at_yahoo.com> wrote:
> Hi.
>
> The 2 GB process limit kicks in well under 2 * 1024 *1024 * 1024.
> its between 1.7 and 1.8 GB.
> I'm quite familiar with hitting it in win32, as large memory support
> was not enabled in every 8.1.7.x patchset. Large memory support sure
> works great in 9.2.0.4.
> W2K3 Server (not Advanced) ships with large memory support.
> In Windows 2000, one needed to acquire Advanced Server edition for
> large memory support.
>
> ways that you know that you hit the process memory limit:
>
> 1. unable to startup instance
> 2. unable to spawn a dedicated server process (in listener.log)
> 3. unable to allocate <n> bytes of memory in the shared pool (in the
> user's error message)
>
> For tracking memory usage by a process (namely, oracle.exe), I'd
> recommend using the sysinternals pslist utility, and log that to an
> OS file. There is the performance logs option in the OS, which gives
> you the benefits of setting a max file size which will be filled in a
> circular fashion.
>
> http://www.sysinternals.com
>
> hth.
>
> Pd
>
>
>
> Yechiel Adar <adar76_at_inter.net.il> wrote:
> I do not see the problem.
> SGA is 970M + PGA (20*40) 800 MB + executables and you got about 2GB
> which
> is the upper limit on NT, unless you used special startup parameter.
>
> Yechiel Adar
> Mehish
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L"
> Sent: Thursday, December 04, 2003 3:24 PM
>
>
> > Hi, friends:
> > Several months ago there is a thread talking about choosing the
> proper
> memory size for windows server running oracle.
> > And today I logon to one of my small oracle on NT and found
> something
> I cannot understand. It is a small application running Oracle
> 817/win2k.
> > SGA is 970M and PGA(maxsize) is 40M. Connection is 20.But from task
> manager, Oracle is using 1005M physical Memory and 1013M virtual
> memory(you
> can view the data from here:
> >
>
http://www.cnoug.org/html/ut/attach/2003/12/04/12516-oramem2-embed.gif).
> >
> >
> >
> > SQL> show sga
> >
> >
> >
> > Total System Global Area 971040796 bytes
> >
> > Fixed Size 75804 bytes
> >
> > Variable Size 299798528 bytes
> >
> > Database Buffers 671088640 bytes
> >
> > Redo Buffers 77824 byte
> >
> > SQL> select count(*) from v$session;
> >
> >
> >
> > COUNT(*)
> >
> > ----------
> >
> > 18
> >
> > SQL> select sum(value) from v$sesstat where statistic#=(select
> statistic#
> from v$statname where name='session pga memory max');
> >
> >
> >
> > SUM(VALUE)
> >
> > ----------
> >
> > 39526196
> >
> > And I looked at another server running SAP/oracle, get similiar
> data:
> >
> > http://www.cnoug.org/html/ut/attach/2003/12/04/12518-sap-embed.gif
> >
> > (780M sga,33 connection and 25M pga).
> >
> >
> >
> > Can someone explain it?
> >
> >
> >
> > Regards
> >
> >
> >
> > Zhu Chao.
> >
> >
> >
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.net
> > --
> > Author: zhu chao
> > INET: chao_ping_at_vip.163.com
> >
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> >
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Yechiel Adar
> INET: adar76_at_inter.net.il
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Paul Baumgartel INET: treegarden_at_yahoo.com 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 Thu Dec 04 2003 - 13:04:32 CST
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