Re: swapping

From: Jeremiah Wilton <jeremiah_at_ora-600.net>
Date: Thu, 6 Jan 2005 11:01:12 -0800 (PST)
Message-ID: <Pine.LNX.4.60.0501061054410.2796@cpq7598>

On Thu, 6 Jan 2005, Mladen Gogala wrote:

> Much of the swap usage is a consequence of dynamic unix buffer
> cache. Free memory is dynamically allocated to the file system
> buffers, but when new process is started, those buffers are saved on
> the swap partition.

This is a great point, and begs the question: Exactly how many buffer caches to you need, and is more always better?

Many people have:

- Oracle buffer cache
- UFS UBC
- Array controller cache with battery backup
- Others?

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Jeremiah Wilton
ORA-600 Consulting
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http://www.ora-600.net



> Chen, Sarah wrote:

>

>> I am encountering high swapping problem on Oracle database 9.2.0.4 with 16G

>> RAM on Sun Sol 2.8 platform.

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Received on Thu Jan 06 2005 - 13:02:06 CST