Re: single node RAC system?

On May 26, 1:06 am, hpuxrac <johnbhur..._at_sbcglobal.net> wrote:
> On May 25, 5:12 pm, herta <herta.vandeney..._at_gmail.com> wrote:
>
>
>
> > We are currently setting up our disaster recovery site (DRS).
>
> > For Oracle, we want to use Dataguard to copy our databases to physical
> > standby databases on a single system at the DRS.
> > The single system is quite capable of running the Dataguard load, but
> > should we need to run production at the DSR, it will not suffice. We
> > would therefore like to set up this system as single node cluster, so
> > that we can easily add instances if necessary.
>
> > I tried installing clusterware on a single node, but the start of ONS
> > fails with:
>
> > Start of `ora.l27.ons` on member `l27` failed.
> > CRS-1006: No more members to consider
> > CRS-0215: Could not start resource 'ora.l27.ons'.
>
> > Metalink article 2411114.1 suggests that the set up is possible,
> > though the environment described there differs from ours (we use
> > 64-bit SLES 10, Oracle RAC 10.2.0.3, ASM).
> > It also warns that "this configuration is not certified or supported
> > by Oracle Support Services".
>
> > Has anyone tried setting up a single node cluster? If so, did you get
> > the ONS error? How did you work around it?
> > As to the support status, in theory, we could set up a two node
> > cluster, and then take one node down. How would that differ from a
> > single node cluster configuration?
>
> > Alternative suggestions to achieve our goals are also welcome, of
> > course.
>
> > FWIIW, I opened an SR with Oracle four days ago, but they have yet to
> > respond with something other than "we're looking into it'. A previous
> > posting in ORACLE_DBA_EXPERTS also remained unanswered.
> > I'm sort of pressed for time as the goal is to ship this to the DRS in
> > three
> > weeks time, and just getting a first copy of the physical databases on
> > the storage is going to take a while.
>
> > Kind regards,
>
> > Herta
>
> You "can" but may not want to run a RAC cluster ( 2 node or more ) in
> a single machine using vmware etc.
>
> Jeffrey Hunter over at idevelopment has an article that gives the
> setup instructions.
>
> Howard Rogers has another example of running multiple RAC instances in
> a single node.

Thanks, John.

The databases are too important to run in non-supported environments, so vmware is out. Howard Rogers' article may hold useful clues, but I'm having problems locating it. Would you please post a pointer?

Kind regards,

Herta Received on Tue May 29 2007 - 02:45:09 CDT