Re: swapping

  • From: Jeremiah Wilton <jeremiah@xxxxxxxxxxx>
  • To: Oracle-L <oracle-l@xxxxxxxxxxxxx>
  • Date: Thu, 6 Jan 2005 11:01:12 -0800 (PST)

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
- Array controller cache with battery backup
- Others?

Jeremiah Wilton
ORA-600 Consulting
Emergencies - Seminars - Hiring

> Chen, Sarah wrote:
>> I am encountering high swapping problem on Oracle database with 16G
>> RAM on Sun Sol 2.8 platform.

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