RE: How windows manage memory: oracle

From: Bellow, Bambi <bbellow_at_chi.navtech.com>
Date: Thu, 04 Dec 2003 13:44:26 -0800
Message-ID: <F001.005D8D00.20031204134426@fatcity.com>

I know I've posted this before, but it's been many years, so here we go again.

NT was supposed to be Windows' answer to VMS. WNT, doesn't stand for anything, so how did they come up with the name?

V+1=W
M+1=N
S+1=T

Just like

I-1=H
B-1=A
M-1=L

Coincidence?
Bambi.

-----Original Message-----
Sent: Thursday, December 04, 2003 2:49 PM To: Multiple recipients of list ORACLE-L

Even though I have never touched VMS myself, I completely agree that it is (was) a great operating system, I've just heard so many good words from respectable sources about it :)

About Windows, probably the initial idea was great but since MS is a marketing driven company, they just left off most of the good pieces in order to release "new" versions sooner...

Tanel.

Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Thursday, December 04, 2003 10:19 PM

> That is utterly disgusting memory management. When I come to think
> of it, there was a guy named David Cutler who was promising that Windows
> will have the same virtual memory system as VMS, with FREELIM,FREEGOAL,
> BORROWLIM, GROWLIM and MPW_ parameters. Working sets are also gone as
> well as the most elaborate privileges system until that time. Authorize
> was a wonderful tool which still leaves anything that either windows or
> Unix can offer in the dust.
> On 12/04/2003 02:54:31 PM, Tanel Poder wrote:
> > > 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).
> >
> > Physical memory and virtual memory overlap in windows.
> >
> > If you have allocated 100M of memory, but only 50M of it is mapped to
> > physical memory (rest is in pagefile), you see 100M and 50M accordingly
in
> > task manager.
> >
> > Also, there is a situation where you can have more physical memory than
> > virtual memory. Im not sure, but it might be doing something with
> > deallocated memory, which is not reclaimed by OS or smth like that.
There is
> > a note about windows nt memory management in metalink, search from there
if
> > want additional information.
> >
> > Tanel.
> >
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.net
> > --
> > Author: Tanel Poder
> > INET: tanel.poder.003_at_mail.ee
> >
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> Mladen Gogala
> Oracle DBA

>
>
>

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> Author: Mladen Gogala
> INET: mladen_at_wangtrading.com

>


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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Tanel Poder
  INET: tanel.poder.003_at_mail.ee

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To REMOVE yourself from this mailing list, send an E-Mail message
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Bellow, Bambi
  INET: bbellow_at_chi.navtech.com

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Received on Thu Dec 04 2003 - 15:44:26 CST