Oracle 9.2.0.2 RAC on RedHat 7.2 is "OK", but 7.2 has no support for CFS or
AIO (As I remember - it has been a while. I switched to AS 2.1, still on
raw devices, months ago.). It was in many respects the least problematic
combination, but is, of course, not officially supported.
As far as the docs go, some are very good (RAC Concepts), some are
marginally useful (e.g. RAC Setup and Configuration). Note that the CFS
docs repeatedly mention "watchdog", even though it was discarded in
9.2.0.2 - months before CFS was even available. Other such contradictions
abound... For example, no two docs seem to call the quorum disk the same
thing - some call it that, some say the "cm" disk, some say other things.
To keep things interesting, they sometimes rotate this usage between docs
when a new version comes out. All quite confusing until you adapt by
skimming over the details.
Don't even think about anything prior to 9.2.0.2 on any version of Linux -
unless you actually want to do *A LOT* of jumping through flaming hoops -
tweaking everything in sight, "faking the watchdog" (really - MetaLink even
has detailed directions for "faking it"), diagnosing random node reboots, ad
nauseum. My experience over the last year with RAC on Linux has been
"entertaining", to say the least.
In 9.0.1.1, the Oracle-supplied cluster management software consisted of
oracm (cluster monitor), oranm (network monitor), and watchdogd (daemon to
randomly crash nodes ;-). Nodes spontaneously rebooted for no apparent
reason - and took all the other nodes in the cluster down with them. This
usually occurred at least a few times per week. ("It will be fixed in the
next release".)
In 9.2.0.1 (I think - it might have been 9.0.x), they eliminated oranm. It
was slightly more stable - only spontaneously, randomly, and for no apparent
reason rebooting one node at a time (usually). ("It will be fixed in the
next patchset.")
In 9.2.0.2, they eliminated watchdogd and added a kernel module named
"hangcheck-timer". It became *much* more stable. I figure with the next
release perhaps they will eliminate the last of the Oracle cluster
management software troublemakers - oracm - and RAC will actually become as
stable as it was initially hyped to be in 9.0.1 ;-)
All this was on a complete front-to-back Oracle "certified" configuration
from a major vendor. [In hindsight, I should have been more suspicious when
they used the "c" word so often and so loudly...]
Don Granaman (reluctant OCP)
OraSaurus resurrected
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: Sunday, February 02, 2003 5:23 PM
> Hello everyone, i've been quiet recently, for those of you who know what
> I've been up to class has been great, emergency medicine is really kewl.
>
> Now to the oracle stuff,
>
> We're having new requirements by multiple clients to ask about RAC(not
> necessarily on linux), so a couple of us thought, we'd try to implement
> it on a few linux servers, as an experiment to see how its done, etc.
>
> I'd really not purchase RH advanced Server 2.1 and just try it on rh
> 8.0, is this even possible?, I've got like no experience on the
> clustering side of operating systems.
>
> I've searched the OTN, oracle and RH sites to not much luck.
>
> Anyone tried this on non RH AS 2.1 and just used regular RH 8.0 and if
> so are you willing to share the good/bad and otherwise of your luck with
it?
>
> If there is something I missed in the docs on what I need to do to make
> it happen, point me that way and I'll be glad to read up on it.
>
> thanks, joe
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Joe Testa
> INET: [EMAIL PROTECTED]
>
> Fat City Network Services -- 858-538-5051 http://www.fatcity.com
> San Diego, California -- Mailing list and web hosting services
> ---------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
>
>
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Don Granaman
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
