Re: RHEL 32 bit + Oracle SE One max memory?

From: Jared Still <jkstill_at_gmail.com>
Date: Thu, 16 Dec 2010 15:35:28 -0800
Message-ID: <AANLkTikuhGSAVh-t2AA_979=+f85PJR3CtRcc2vz-iN+_at_mail.gmail.com>

On Thu, Dec 16, 2010 at 12:03 PM, William Muriithi < william.muriithi_at_epicadvertising.com> wrote:

> The other problem is, if there is an exhaustion of lower memory, OOM killer
> will attempt to clear memory and once in a while, that will result to the
> database being the candidate. That can result in data inconsistency and a
> rough night. So why use a 32 bit kernel when the 64 bit kernel has long
> been so stable and reliable? Seriously, I can not think of a single reason
> why it would be preferable to use a 32 bit RHEL5. Unless you really have
> fun fighting unnecessary fires
>
>

This bit from Note 452000.1 may also be helpful:

*The Kernel is out of LowMem (32-bit architectures only)*

"LowFree" in /proc/meminfo is very low, but HighFree is much higher. OOM killer will take action under that situation. *The specific workload may benefit from being run on a 64-bit architectures *or other methods (See Note 452326.1<https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&id=452326.1>) .

Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist Oracle Blog: http://jkstill.blogspot.com Home Page: http://jaredstill.com

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Received on Thu Dec 16 2010 - 17:35:28 CST