Re: 64 node Oracle RAC Cluster (The reality of...)
- From: Niall Litchfield <niall.litchfield@xxxxxxxxx>
- To: gogala@xxxxxxxxxxxxx
- Date: Wed, 22 Jun 2005 09:48:50 +0100
On 6/21/05, Mladen Gogala <gogala@xxxxxxxxxxxxx> wrote:
>
>
> On 06/21/2005 08:17:38 AM, Marquez, Chris wrote:
> > >>thought of seeing eye popping
> > >>number of 'global cache cr requests'
> > >>for a 64 node RAC gives me chills.
> >
> > My thoughts exactly!
> >
> > Chris Marquez
> > Oracle DBA
> >
>
>
> There are two unholy words which Oracle sales people usually avoid when
> talking
> about RAC: functional partitioning. Functional partitioning means that
> each RAC
> node has a separate and specialized function and is mostly dealing with
> one part
> the database. That is still the best way of organizing RAC system.
Actually they do talk about it, its the SERVICE functionality in 10g
allocating specific services (identified by net8 connecion strings or
programatically) to specific nodes and reallocating over time and according
to resource requirements. I bet there's a java demo of it happening
automagically in real time somewhere as well. Its a good feature in
principle, unfortunately I've only ever heard about it from marketing or the
docs. (and I'm not going to try it on our two node cluster to turn it into
an active-passive cluster just for fun). So there you go Oracle marketing do
talk about a good feature, appropriately and with - at least at what my wife
calls "the hand-waving level" - a fair degree of technical nous.
Now I think I'm going to have to have a coffee and a lie down, I'm being
nice to marketing. It'll be developers next.
--
> Niall Litchfield
> Oracle DBA
> http://www.niall.litchfield.dial.pipex.com
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