Re: Voting disk TIE

That's not quite accurate and it's a commonly misunderstood.

See:
http://download-west.oracle.com/docs/cd/B19306_01/install.102/b14203/storage.htm#sthref677

"An absolute majority of voting disks configured (more than half) must be available and responsive at all times for Oracle Clusterware to operate."

In other words: if you have *six voting disks* ... and then there's a network failure that causes a split brain scenario where: *node 1 -> three disks*
*node 2 -> two disks*

Then *both nodes will shutdown*. at least four disks - more than half the configured disks - are required for the cluster to operate (at least according to the documentation).

If this same scenario happens but you've only configured *five *voting disks then *node 1* will survive.

-Jeremy

On 5/10/07, K Gopalakrishnan <kaygopal_at_gmail.com> wrote:
>
> Tricky situation. Cluster group which is hosting the majority of
> votes lowest node number will survive. Other groups will be kicked
> out.
>
>
> --
> Best Regards,
> K Gopalakrishnan
> Co-Author: Oracle Wait Interface, Oracle Press 2004
> http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/
>
> Author: Oracle Database 10g RAC Handbook, Oracle Press 2006
> http://www.amazon.com/gp/product/007146509X/
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>

-- 
Jeremy Schneider
Chicago, IL
http://www.ardentperf.com/category/technical

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