Re: Master to Master Replication and availability

  • From: Stephane Faroult <sfaroult@xxxxxxxxxxxx>
  • To: oracle-l@xxxxxxxxxxxxx
  • Date: Mon, 12 Jul 2004 20:44:14 +0200

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).

SF

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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