Thanks you all, I started with Bucardo. I installed activeperl 5.12 on my Linux(RHEL5.5) server. Can you please suggest some link which describe the installation steps in details.
> I have heard good things about Bucardo, though I haven't tried it myself > yet. I was warned that it would be risky to have 2 masters that have the > same tables modified in both because of issues such as delayed sync, race > conditions and other such goodies that may corrupt the meaning of the data.
Just to be clear and fair to Bucardo, I would add a few points.
All multi-master replication solutions that use an optimistic mechanism require "conflict resolution" cases and code. This is the same with SQLServer and Oracle etc.. Referring to a well known problem as a race condition seems to introduce doubt and fear into a situation that is well understood. Bucardo does offer hooks for conflict resolution to allow you to program around the issues.
So if I felt that multi-master replication was the right way to go for a solution, Bucardo is a good choice.
Just to add other info: if multi-master replication uses pessimistic coherence, then the coherence mechanism can also be a source of contention and/or cause the need for alternative kinds of conflict resolution.
