Re: 10g with HACMP (no RAC)?

From: Matthias Hoys <>
Date: Sun, 7 Sep 2008 14:49:19 +0200
Message-ID: <48c3cdcf$0$2863$>

<> wrote in message
> On Sat, 06 Sep 2008 21:14:28 +0100, Palooka <>
> wrote:
>>We are planning to implement Oracle on AIX 5.3 with HACMP but
>>without RAC.
> Why? HACMP only offers server and application failover, it does not
> offer any special facilities for Oracle. So the instances will not
> failover properly.

I have used HACMP in the past with Oracle 8i & 9i on AIX 5.2 (also with EMC SAN). What do you mean with "the instances will not failover properly" ? I never had any problems with it, but of course, you always have downtime (in our case 5-10 minutes) during a failover/failback since the instances have to be stopped and the volume groups/filesystems unmounted on the active host and mounted on the standby host. And, if you already have another instance running on the standby host, you have to make sure the standby host has enough free resources (CPU/memory) for the other instance. But I don't think it's possible to have 100% uptime during a failover with HACMP. Matthias Received on Sun Sep 07 2008 - 07:49:19 CDT

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