Re: Master to Master Replication and availability

From: Stephane Faroult <sfaroult_at_roughsea.com>
Date: Mon, 12 Jul 2004 20:44:14 +0200
Message-ID: <40F2DBFE.1040906@roughsea.com>

Greg,

One of my customers does, and has had at a time something like 10 or 15 replicated databases, using a 'hub-and-spokes' topology. They weren't using Oracle replication, but some in-house code, not flawless but by-and-large satisfactory for their needs. It isn't 'synchronous' replication proper (to me, the main advantage of replication is the shock-absorbance provided by queues) but near real-time across 3 continents (something like 4/5 seconds for a Paris to Tokyo roundtrip).

Loughmiller, Greg wrote:

>Hey guys,
>
>
>Just curious here.. But "who" out there is using some sense of
>master-to-master replication of an OLTP application using to provide their
>clients a level of availability? So for example, two databases which would
>reside in geographically diverse data centers with synchronous replication
>:-)
>
>
>
>
>
>I'm not a big fan of master-to-master synchronous replication (nor async
>replication) as I believe the complexity and operational overhead would far
>exceed providing a Stand By Database (Data Guard). But I'm looking for some
>feedback/experience from the folks on the mailing list.
>
>
>
>
>
>Thanks in advance!!
>
>
>
>Greg Loughmiller
>
>
>

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Received on Mon Jul 12 2004 - 13:41:55 CDT