RE: RHEL 32 bit + Oracle SE One max memory?
- From: "Blanchard, William G" <William.Blanchard@xxxxxxxxxxxxx>
- To: <Chris.Stephens@xxxxxxx>, "William Muriithi" <william.muriithi@xxxxxxxxxxxxxxxxxxx>
- Date: Thu, 16 Dec 2010 15:12:39 -0600
A little bit of the ID 10T syndrome.
WGB
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Stephens, Chris
Sent: Thursday, December 16, 2010 2:07 PM
To: William Muriithi
Cc: ORACLE-L
Subject: RE: RHEL 32 bit + Oracle SE One max memory?
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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