Re: Multiple DATABASES on the same RAC cluster

From: koert54 <nospam_at_nospam.com>
Date: Fri, 16 May 2003 14:13:36 GMT
Message-ID: <km6xa.4719$1u5.450@afrodite.telenet-ops.be>

"Richard Foote" <richard.foote_at_bigpond.com> wrote in message news:l26xa.35564$1s1.515083_at_newsfeeds.bigpond.com...
> "Daniel Morgan" <damorgan_at_exxesolutions.com> wrote in message
> news:3EC462B7.703E339E_at_exxesolutions.com...
> > Jonathan Lewis wrote:
> >
> > > Just one comment in line.
> > >
> > > --
> > > Regards
> > >
> > > Jonathan Lewis
> > > http://www.jlcomp.demon.co.uk
> > >
> > > The educated person is not the person
> > > who can answer the questions, but the
> > > person who can question the answers -- T. Schick Jr
> > >
> > > One-day tutorials:
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> > >
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> > > The Co-operative Oracle Users' FAQ
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> > >
> > > "Howard J. Rogers" <howardjr2000_at_yahoo.com.au> wrote in message
> > > news:_QVwa.35126$1s1.509881_at_newsfeeds.bigpond.com...
> > > >
> > > > > time finding out a good answer to relay to them. They want to
> > > know wether
> > > > > or not they can implement two or more RAC clustered databases on
> > > the same
> > > > > hardware running at the same time.
> > > >
> > > > Yes they can. Is it a good idea to do so? Doubt it.
> > > >
> > >
> > > One possible scenario where this might be sensible.
> > > You have two applications, which are not RAC-compliant -
> > > i.e. no chance of two-node RAC scaling at all.
> > >
> > > For resilience purposes, you set up application A
> > > with node1 its active node and node2 its passive node;
> > > then set up application B so that node 2 is its active
> > > node and node1 its passive node.
> > >
> > > Each application is (close to) running on a dedicated
> > > server system, but with a failover position where both
> > > applications will be running on one server.
> >
> > Brilliant.
> >
> > I have a possible use for this coming up on a project next month. Client
> > is just waiting for some new AIX boxes to arrive and this would be
> > perfect.
> >

>

> Hi Daniel,

>

> Not an expert on RAC by any means.

>
> But couldn't the above also be achieved by having the two clustered
servers
> and using Failsafe (or some such) instead ?

>

> Benefit being saving in mucho $$$$ in Oracle licensing.

>

> Cheers

>

> Richard

>
>

I agree - IBM AIX + HACMP in mutual take-over will be way cheaper in Oracle licenses (you
need hacmp anyway) and heck - willing to bet on it ... will be more stable ! :-) Received on Fri May 16 2003 - 09:13:36 CDT