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RE: 9i standby

From: Mark Leith <mark_at_cool-tools.co.uk>
Date: Fri, 13 Jul 2001 12:22:08 -0700
Message-ID: <F001.0034A191.20010713112056@fatcity.com>

No it is not the upgrade of OPS as I understand. They even put OPS down themselves saying that it was sparsely used, and far to complicated to set up.

What RAC does, is essentially link every machine together in to a "cluster", then each physical machine can touch the same database concurrently (probably on a central storage unit). There is no actual "standby" when this is in use, as all machines connected to the cluster work together - but if one of the machines has a hardware failure, the load is simply spread between the remaining machines..

It looks *really* cool stuff, and by *Oracles* stats, beats any other clustered databases in real world situations.

If only I could blag the boss for a ?1,000,000 budget for a bunch of compaq servers >:-)

Mark

-----Original Message-----
Greenfield
Sent: Friday, July 13, 2001 03:51
To: Multiple recipients of list ORACLE-L

Mark, isn't RAC just the upgrade for OPS? Then that would make it a 'standby' for the instance, but not a standby for the database, no?

Am I misunderstanding something?

y

Mark Leith wrote:

> I attended the Oracle 9i opening yesterday at Oracle HQ in the UK, and one
> of the main points they discussed about 9i, was the use of Real
Application
> Clusters (RAC). Of course you have to be running on Compaq hardware at the
> moment, but it takes the need for a standby away, as you essentially just
> plug the standby in to the cluster, and make use of it's computing power,
> instead of having the standby just stood waiting for a failure..
>
> Just a thought..
>
> Mark
>
> -----Original Message-----
> Turner
> Sent: Thursday, July 12, 2001 08:26
> To: Multiple recipients of list ORACLE-L
>
> Anyone know if the standby in 9i can be in readonly mode while the logs
are
> being applied? I've heard about this as being the case and also that this
> isn't
> the case.
>
> Thanks, Dave Turner
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: David Turner
> INET: turner_at_tellme.com
>
>

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Author: Yosi Greenfield
  INET: yosi_at_comhill.com

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Author: Mark Leith
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Received on Fri Jul 13 2001 - 14:22:08 CDT

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