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

You might also point to the current top tpc-c price/performance benchmark
that runs SE-1 with 96gb RAM in the server :)
http://www.tpc.org/results/individual_results/HP/HP_ML350_G6_OEL_TPCC_100816_ES.pdf
-
certainly no license or physical limit there.

On Thu, Dec 16, 2010 at 8:06 PM, Stephens, Chris <Chris.Stephens@xxxxxxx>wrote:

> This is the kind of justification I was looking for. :)
>
> Thanks!
>
> I have no idea why they continue to install 32 bit RHEL on 64 bit hardware.
>
> -----Original Message-----
> From: William Muriithi [mailto:william.muriithi@xxxxxxxxxxxxxxxxxxx]
> Sent: Thursday, December 16, 2010 2:04 PM
> To: Stephens, Chris
> Cc: ORACLE-L
> Subject: Re: RHEL 32 bit + Oracle SE One max memory?
>
>  Stephen
> >
> >
> > Is it worth insisting on 64 bit RHEL given only 8GB of ram?
> >
>
> Definitely yes. If you were running an application that is using less than
> 4 GB, its fine using a 32 bit OS.  However, the moment you have a software
> using more than that, its more efficient using a 64 bit RHEL5.  There will
> be a remap of address in upper memory that will be done from the lower
> memory in 32 bit OS.  That make the system slower and harder to manage.
>
> 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
>
> Or, someone does not want to do a re-installation, but that is not a good
> reason as the effort invested in re-installation is less that the effort
> that will be needed to support the database over the life of that hardware.
>  That or, there is already services running that will be sharing the same
> hardware
>
> > Anyone know how much memory I can allocation to 32bit SE One?  Got a
> link?  I can find the minimums but am having trouble locating the maximums.
> >
> > Thanks!
> > Chris
> >
> >
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> >
> William
>
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-- 
Niall Litchfield
Oracle DBA
http://www.orawin.info

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