Re: active-pasive cluster in linux

It is true that you can write your onw scripts. I just said the ones which comes with the paper is old fashioned such as running ps -ef | grep pmon to test if instance is alive, we all know that is not reliable.

Thanks

--
LSC


On Mon, Feb 22, 2010 at 4:43 PM, Martin Bach
<development_at_the-playground.de>wrote:



> Hi all,

>

> On 02/22/2010 09:01 AM, LS Cheng wrote:

> > Hi

> >

> [...]

> >

> > Oracle Clusterware works fine but the monitoring scripts are sort of

> > primitive, it also forces you to run ASM.

>

> I have successfully implemented this on a number of systems without

> problems. And I don't want to appear defensive here but why do you think

> that monitoring scripts are sort of primitive? Are you referring to the

> sample code on

>

> http://www.oracle.com/technology/sample_code/products/rac/zip/sifo_action_scripts.zip

> ?

> Those could indeed be improved. However you can always write your own

> scripts to ensure the database is up to your personal test for

> sophistication. All that is needed is a script to take 3 parameters

> (which CRS will pass to it) for checking the resource status, starting

> and stopping the resource.

>

> ASM isn't required but useful and simple to set up-if you like you could

> use OCFS2 (don't know about GFS support for this...).

>

> If you wanted, you could even virtualise this: Steve Shaw has done a

> really good presentation about high availability in the age of austerity

> which uses this concept based on Oracle VM.

>

> I think an active/passive cluster based on CRS it's a really cool and

> cost effective idea (Oracle don't recommend that anymore because they

> can't make any money out of it, with Rac One Node they can!)

>

> >

> > --

> > LSC

> >

> >

> > On Sun, Feb 21, 2010 at 11:21 PM, Juan Cruz Miranda Vigo

> > <jcmiranda_at_oesia.com <mailto:jcmiranda_at_oesia.com>> wrote:

> >

> >     Hi

> >

> >     I need to configure an Oracle database into an active-pasive cluster

> >     in linux.

> >

> [..]

>

> Hope this helps,

>

> Martin

> --

> Martin Bach

> OCM 10g

> http://martincarstenbach.wordpress.com

> http://www.linkedin.com/in/martincarstenbach

>


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