Re: OEL 5.2 Oracle 10g database and swap

From: Karl Arao <karlarao_at_gmail.com>
Date: Thu, 14 May 2009 04:22:24 +0800
Message-ID: <12ee65600905131322x1ffb1aedj5aad9e4814d0e34_at_mail.gmail.com>

In our company we follow some ROT (rule of thumb) when installing..

*RHEL 3* and below (double the size)

*RHEL 4*:

1. if RAM <= 2GB then swap = 2X RAM
2. if RAM > 2GB then

   e.g. 4GB
    (2GB x 2) + 2GB

• 6GB (3x swap partition)

   e.g. 8GB
    (2GB x 2) + 6GB

• 10GB (5x swap partition)

*RHEL 5*:
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Installation_Guide/s2-diskpartrecommend-x86.html

NOTE: LVM distributes its extents across disks... so don't put your SWAP on an LVM

• Karl Arao karlarao.wordpress.com

On Thu, May 14, 2009 at 3:12 AM, <TESTAJ3_at_nationwide.com> wrote:

>
> We did in our pilot and with 64G of ram we just went with 2G of swap, now
> this is not production as we've not got that ironed out yet.
>
> joe
>
> _______________________________________
> Joe Testa, Oracle Certified Professional
> (Work) 614-677-1668
> (Cell) 614-312-6715
>
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>
>
> From: kathy duret <katpopins21_at_yahoo.com> To: oracle-l_at_freelists.org
> Date: 05/13/2009 03:10 PM Subject: OEL 5.2 Oracle 10g database and swap Sent
> by: oracle-l-bounce_at_freelists.org
> ------------------------------
>
>
>
> I had always used the rule of thumb for putting 1.5 swap to RAM on Linux
> Servers
> We are installing OEL 5.2, 10G 3 node RAC cluster with 64G of RAM.
>
> When I looked at the Metalink install doc 421038.1 it says:
>
> Between 1024 MB and 2048 MB 1.5 times the size of RAM Between 2049 MB and
> 8192 MB Equal to the size of RAM More than 8192 MB 0.75 times the size of
> RAM
>
> Has anyone installed this and what are you using.
>
> Have you also used hugepages?
>
> Thanks,
>
> Kathy
>
>
>
>
>

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Received on Wed May 13 2009 - 15:22:24 CDT