RE: Oracle Supported RAC Configuration
- From: "Freeman, Donald" <dofreeman@xxxxxxxxxxx>
- To: "Matthew Zito" <mzito@xxxxxxxxxxx>, "Freeman, Donald" <dofreeman@xxxxxxxxxxx>, <kevinc@xxxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 5 Jun 2006 15:39:30 -0400
We only have two nodes. I know that you need a VLAN if you are going to
use more nodes. And, of course the network guys say there is no
evidence of any switch failure at the time of the evictions. I am
having to answer questions on this today....the other guy is off.
-----Original Message-----
From: Matthew Zito [mailto:mzito@xxxxxxxxxxx]
Sent: Monday, June 05, 2006 3:26 PM
To: dofreeman@xxxxxxxxxxx; kevinc@xxxxxxxxxxxxx;
oracle-l@xxxxxxxxxxxxx
Subject: RE: Oracle Supported RAC Configuration
If I may bridge the gap - Donald is referring to the ethernet
switch, Kevin is referring to Fibre Channel. FWIW, oracle doesn't
require a dedicated switch for the interconnect, and in fact, its better
to cable the interconnects into both of your core switches and just
dedicate a VLAN to the interconnect. However, its rarely the network
that actually causes the node evictions, despite Oracle's tendency to
point the finger there. If you're really looking towards that, you
could do a tcpdump of the interconnect interfaces and drop it into
Ethereal and dig into the network packets (or have your network engineer
do it).
Matt
_____
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Freeman, Donald
Sent: Monday, June 05, 2006 3:20 PM
To: kevinc@xxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: RE: Oracle Supported RAC Configuration
Ah...you noticed my imprecise language....I'm the alternate DBA
for this system. I don't normally work on RAC. I'm talking about Node
1 kicking Node 2 out of the cluster.
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin Closson
Sent: Monday, June 05, 2006 2:36 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: Oracle Supported RAC Configuration
You can use a zoned switch. What is an "eviction" in
your terminology?
_____
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Freeman, Donald
Sent: Monday, June 05, 2006 11:26 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Oracle Supported RAC Configuration
We are having an argument with our CoLo facility
over the issue of a dedicated switch for our RAC interconnect. We are
saying it's an Oracle requirement and Oracle does not support any other
configuration. Of course, I can't find any Metalink source for that
requirement. I can't think up any more wild combinations of search
terms that will bring me back any fewer than 10k docs. Does anybody
have any reference for this "requirement?" We are experiencing
periodic evictions from the cluster and wanted to eliminate network
issues from our considerations.
Don Freeman
Database Administrator 1
Bureau of Information Technology
Pennsylvania Department of Health
(717) 703-5782
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