Re: Oracle 9i RAC

Pete Sharman <peter.sharman_at_oracle.com> wrote in message news:<al2oie02r30_at_drn.newsguy.com>...
> In article <kBac9.20410$g9.61420_at_newsfeeds.bigpond.com>, "Howard says...
> >

 snip
> >>
> >> On Windows 2000, we are trying to understand that if you are running
> >> Windows 2000 Advanced Server and making Node 1 and Node 2 part of
> >> an OS cluster, where would Oracle's cluster file system be installed?
> >> My understanding is that Oracle's CFS simply alleviates the need for
> >> dealing with raw partitions, but does not replace cluster aware OS
> >> software. Is this correct? So if you have Node 1 and Node 2 both
> >> running Windows 2000 Advanced Server and they are the two nodes in
> >> the window cluster, where is Oracle CFS installed? Can it be on a
> >> third machine that is not one of the nodes, but serves as the crude
> >> shared storage? Any info would help. The pre-install and install docs
> >> don't seem to answer these issues and I can't find anyone who has
> >> more detail info.
> >>
> >
> >As far as I can tell, it's important that the two machines are NOT part of
> >a Windows Cluster. Windows 'clustering' is a bit weird, frankly: what node
> >1 writes to the shared disk isn't seen by node 2, until node 1 blows up. In
> >other words, it's failover clustering, not true clustering with shared
> >access to the shared device.
> >
> >I don't have the doco to hand, but I could have sworn there's an
> >instruction in the Windows installation documents to switch off the
> >Microsoft Clustering service before proceeding with the install.
>
> Depends on what you want to do. RAC will work whether you're using MSCS or not.
> FailSafe on the other hand requires MSCS. From what I understand, FailSafe is
> the active-standby solution, while RAC can be either active-standby or
> active-active, but as I mentioned before, RAC on Windows is not something I've
> played with in great detail so I could be wrong on that.
>
> Pete
> >
> >Point being, it's perfectly possible to RAC two Windows Pro boxes (and use
> >the CFS, even though the installation doco doesn't say that you can do so
> >on that version).
> >
> >When you install the CFS on node 1, incidentally, the relevant software
> >gets automatically copied across to node 2, and a service is started on
> >*both* nodes. So, no -there's no third machine, and it goes on both nodes
> >of the cluster, but *you* only have to physically install it on one.
> >
> >It makes RAC installation a doddle, since you only need a couple of
> >partitions to work with, instead of the bezillion you require with raw
> >devices. You get the opportunity to tell Oracle whether you want the CFS to
> >be used for the ORACLE_HOME, the datafiles, or both... in other words, it
> >makes possible the single installation of Oracle's executables onto the
> >shared drive... each node doesn't have to have it installed separately, and
> >installation time is therefore about halved. Frankly, it's a godsend.
> >

The pre-install configuration notes for windows first starts talking about making the nodes 'cluster-aware' so i assume that implies introducing MS Cluster services prior to install.

> >Regards
> >HJR
> >
> >
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> >>
> >>> HTH. Additions and corrections welcome.
> >>>
> >>> Pete
> >>>
> >>> SELECT standard_disclaimer, witty_remark FROM company_requirements;
> >
>
> HTH. Additions and corrections welcome.
>
> Pete
>
> SELECT standard_disclaimer, witty_remark FROM company_requirements;
Received on Tue Sep 03 2002 - 17:08:19 CDT