Re: Data Guard 10g: RAC switchover to single instance

From: vick <gmervick_at_gmail.com>
Date: Tue, 28 Oct 2008 18:28:52 -0700 (PDT)
Message-ID: <e92cdf61-9341-44c0-9126-00d3255ff4b5@d31g2000hsg.googlegroups.com>


On Oct 26, 9:15 pm, "Pete's" <empete2..._at_yahoo.com> wrote:
> On Oct 24, 10:11 pm, vick <gmerv..._at_gmail.com> wrote:
>
>
>
> > On Oct 24, 5:03 pm, "Pete's" <empete2..._at_yahoo.com> wrote:
>
> > > On Oct 24, 2:30 pm, vick <gmerv..._at_gmail.com> wrote:
>
> > > > Hi,
> > > > I have a 2-node primary RAC and a single physical standby instance.
>
> > > > If I perform a switchover, I would like to know what's the new
> > > > configuration will be:
>
> > > > 1) single primary instance and single standby instance
>
> > > > or
>
> > > > 2) single primary instance and 2-node standby instance
>
> > > > I think it (2) but I'm not sure.
>
> > > > Thanks.
>
> > > To perform the switchover, you need to shutdown and disable one of the
> > > RAC primary's.  Then perform the switchover to the physical standby.
> > > After the switchover, I have only left one of the former primary RAC
> > > instances running.
>
> > > HTH,
> > > Pete's
>
> > Thanks for your response.
> > When you said "shutdown and disable one of the RAC primary's", do you
> > mean
> > 1) shutdown the instance followed by
> > 2) disable the instance and then
> > 3) shutdown the server?
>
> > Are the following the correct steps when I'm switching back to the 2-
> > node primary RAC?
> > 1) Leaving one of the RAC nodes down, perform the switchover
> > 2) startup the server
> > 3) enable the instance
> > 4) startup the instance
>
> > Thanks again.
>
> Shutdown the instance then disable the instance, you do not need to
> shutdown the server.  For switching back to the RAC cluster, leave
> only one RAC instance running.  Perform the switch back, once
> complete, enable the remaining RAC instance and start it.
>
> BTW, there is a document on technet.oracle.com detailing this
> procedure, in fact, it's detailed for Physical & Logical Standy's.
> Look for MAA(Maximum Availability Architecture, I think) white papers.
>
> HTH,
> Pete's

Thanks. Received on Tue Oct 28 2008 - 20:28:52 CDT

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