Re: SGA question

Hi!

I believe that you can allocate more virtual memory to Oracle than you got physical. Never cared enough to try, though. There's a init.ora parameter LOCK_SGA, if you set it to true, then Oracle tries to hard lock all pages to physical memory, in that case you would probably get error on startup.

Tanel.

• Original Message ----- From: "AK" <oramagic_at_hotmail.com> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Tuesday, July 15, 2003 9:49 PM Subject: Re: SGA question

> If it take only real mem in consideration why would pageing happen at all
?
>
> -ak
>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Tuesday, July 15, 2003 11:19 AM
>
>
> > surely i will not do it. but my question is whether it
> > is possible at all to do it.
> >
> > will oracle when allocating shared memory space take
> > virtual memory into consideration or only real memory
> > into consideration.
> >
> > thanks
> > sai
> >
> > --- AK <oramagic_at_hotmail.com> wrote:
> > > you will end up doing swap/paging .
> > >
> > > -ak
> > >
> > >
> > > ----- Original Message -----
> > > To: "Multiple recipients of list ORACLE-L"
> > > <ORACLE-L_at_fatcity.com>
> > > Sent: Tuesday, July 15, 2003 9:49 AM
> > >
> > >
> > > > hi
> > > >
> > > > is it possible to have a sga bigger than the rela
> > > > memory available?
> > > >
> > > > suppose i have a 1gb ram can i start an instance
> > > with
> > > > sga 2gb. does virtual memeory play a part in this
> > > > memory allocation?
> > > >
> > > > thanks
> > > > sai
> > > > --
> > > > Please see the official ORACLE-L FAQ:
> > > http://www.orafaq.net
> > > > --
> > > > Author: Sai Selvaganesan
> > > > INET: ssaisundar_at_sbcglobal.net
> > > >
> > > > Fat City Network Services -- 858-538-5051
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> >
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: AK
> INET: oramagic_at_hotmail.com
>
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Received on Tue Jul 15 2003 - 15:49:39 CDT