Re: Voting disk TIE
- From: "Jeremy Paul Schneider" <jeremy.schneider@xxxxxxxxxxxxxx>
- To: kaygopal@xxxxxxxxx
- Date: Thu, 10 May 2007 12:46:19 -0500
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@xxxxxxxxx> 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/
--
//www.freelists.org/webpage/oracle-l
--
Jeremy Schneider
Chicago, IL
http://www.ardentperf.com/category/technical
Other related posts:
