RE: OEL 5.2 Oracle 10g database and swap

From: Mark W. Farnham <mwf_at_rsiz.com>
Date: Wed, 13 May 2009 16:22:02 -0400
Message-ID: <97A45F48A2EB42A48C2191FCEFECFD67_at_rsiz.com>

I cannot understand why they do not tell you to subtract the amount of RAM you plan to use for SGA before you make those calculations.  

Also, disk is cheap, so why would you ever want to have less than about 4 GB of swap (says the guy who used to cobble together a *lot* of .50 g and .75 gig disk drives to make under a dozen 7 GB databases that were called a VLDB.) (Could I please have 10 MB for each SGA sir? Please?)  

Regards,  

mwf  

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From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of kathy duret
Sent: Wednesday, May 13, 2009 3:08 PM
To: oracle-l_at_freelists.org
Subject: OEL 5.2 Oracle 10g database and swap  

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 - 15:22:02 CDT