Re: Hugepages question with multiple instances on 1 host

From: Alex Fatkulin <afatkulin_at_gmail.com>
Date: Mon, 29 Apr 2013 10:29:07 -0400
Message-ID: <CAMVw97LRJa+-fR+xsU=ySp-TZyT_gKiNbjm6sy5H6+tEy0QQAA_at_mail.gmail.com>

You sure can,
if you're on 11.2 then you can specify use_large_pages=only for DB1 and use_large_pages=false on DB2.

On previous version it'll be a little bit trickier -- probably the easiest way is to start DB1 _before_ you start DB2 so DB1 can claim all the huge pages leaving DB2 with only regular pages to allocate. That is unless you want to setup two different users and do it via OS limits.

On Mon, Apr 29, 2013 at 10:19 AM, <Christopher.Taylor2_at_parallon.net> wrote:

> I think this is a quick question.
> As I'm going through the hugepages information, I'm trying to figure out
> if you can, or cannot, have multiple instances on 1 host running different
> configurations?
>
> Such as
> DB_1 running hugepages (32GB SGA)
> DB_2 running regular pages (4GB SGA)
>
> It seems that all instances will need to be in hugepages?
>
> Thanks
>
> Chris Taylor
> Oracle DBA
> Parallon IT&S
>
>
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>

-- 
Alex Fatkulin,
http://afatkulin.blogspot.com

Enkitec,
http://www.enkitec.com


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Received on Mon Apr 29 2013 - 16:29:07 CEST