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RE: RAC on extended distance clusteres

From: Pete Sharman <>
Date: Wed, 14 Dec 2005 05:20:22 +1100
Message-ID: <20051214052022709.00000003828@psharman-au>

Well, you got me there, it should have been "fell" and I'd never heard of Paddy Martin, so that makes us even! :)

I'm not saying it won't work, it will and we have customers doing it. But to me it's trying to fit a square peg into a round hole. Use a big enough sledgehammer and you can do anything I guess. However, if your data is that important to you that you want to make it highly available, then use the right technology for the right problem. HA is hard enough as it is without doing weird and wonderful things to achieve it. Just using RAC with extended clustering technology does not give you the full gamut of HA that you can get using RAC for machine failover capability and DataGuard for site failover capability.  


"Controlling developers is like herding cats." Kevin Loney, Oracle DBA Handbook  

"Oh no, it's not. It's much harder than that!" Bruce Pihlamae, long-term Oracle DBA

-----Original Message-----
From: [] On Behalf Of Ray Stell Sent: Wednesday, 14 December 2005 4:56 AM To: Pete Sharman
Cc: oracle-l
Subject: Re: RAC on extended distance clusteres

On Wed, Dec 14, 2005 at 04:09:07AM +1100, Pete Sharman wrote:
> It seems people try to use this as a cheap way to provide DR and HA in one foul swoop.

Forgive the non-techie aside, I had never heard the foul ref before, though it is reported to be in common usage. So, what you're saying is that RAC for DR purposes is a "Paddy Martin?"

"All my pretty ones?
Did you say all? O hell-kite! All?
What, all my pretty chickens and their dam At one fell swoop?"

" fell swoop has now been Betty Martined to 'at (orin) one foul swoop because the meaning of fell has largely been lost."


Received on Tue Dec 13 2005 - 12:23:56 CST

Original text of this message