Re: single node RAC system?

herta 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

Build a two-node cluster and then shut down one machine.

Suggestions that you use VMWare will result in an unsupported environment.

-- 
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu
(replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org