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.
Thanks, Tushar On Tue, May 3, 2011 at 2:49 PM, Simon Riggs <si...@2ndquadrant.com> wrote: > On Tue, May 3, 2011 at 7:31 AM, Sim Zacks <s...@compulab.co.il> wrote: > > > 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. > > -- > Simon Riggs http://www.2ndQuadrant.com/ > PostgreSQL Development, 24x7 Support, Training & Services > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general >
