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RE: MultiMaster Replication

From: Marquez, Chris <cmarquez_at_collegeboard.org>
Date: Tue, 23 Aug 2005 23:00:15 -0400
Message-ID: <B30C2483766F9342B6AEF108833CC84E05BD5F3C@ecogenemld50.Org.Collegeboard.local>


>>1....there needs to be a master definition site.
>>if the communication breaks between 2 sites
>>will we have to change the master definition site.

It is possible to change the "master definition site", but generally this would only be done of the original master definition site is "gone", "dead", "lost"...temporary loss of one multi-master site does not mean re-defining the master definition site...unless you need to do repadmin tasks that must be done for the (down) master definition site.

>>2...replicate sequences

I used local sequence on each side the would *not* collide buy using different START and INCREMENT values.

I liked Oracle Multi Master Replication for *simple* TABLE level replication where most or all transaction happen on one node...more than that and the admin of it (any transaction based replication) becomes painful.

hth

Chris Marquez
Oracle DBA

-----Original Message-----
From: oracle-l-bounce_at_freelists.org on behalf of Fuad Arshad Sent: Sun 8/21/2005 10:19 AM
To: oracle-l_at_freelists.org
Subject: MultiMaster Replication  

I've been reading up on multimaster replication and had a few questions.

  1. After the multimaster replication setup there needs to be a master definition site. if the communication breaks between 2 sites will we have to change the master definition site.
  2. the tables the i'm trying to replicate have sequences that i need to transform to sequences on the other side.

oracle seems to say its possbile but i cant find an example.

If anyone on the list has had experience with multimaster. if they could drop me an email and we could chat a little bit offline that would be really great.  

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Received on Tue Aug 23 2005 - 22:02:31 CDT

Original text of this message

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