I don't know slony that much. I used WAL processing. But since 9.0 I prefer Hot-Streaming replication. This link is a good starting point - besides the documentation. <http://it.toolbox.com/blogs/database-soup/5-minutes-to-binary- replication-41873> A solution for your problem might be a second database on the replicated db- server that is working in normal mode (not hot standby) and is filled up by the replicated database, which works in read-only mode. PG can easily handle multiple clusters that contain 80MB on one "normal" server. Matthias Am Donnerstag, 11. November 2010, um 23:05:06 schrieb Demitri Muna: > Hello, > > I am interested in sharing/replicating data between different databases, > and I'd like to ask if what I'd like to do is possible in postgresql. I > have read a fair amount of documentation and was looking forward to > PostgreSQL 9, but I don't think it will do for me what I want. > > I have an astronomical database at one site, let's call it A. At my own > institution (across the country), I have another database, B. I want to > replicate all of the tables of A into a read-only copy in B, in as close > to real-time as possible. The time isn't a critical factor here - if it's > delayed by even an hour, I'm ok with that. Tables in B will need to JOIN > against tables from A. The total size of A is ~80MB and grows slowly. > > After reading the documentation for PG9's replication, it seems I cannot do > this since it only supports replicating a cluster. It appears that I'd > want to put the tables in B into one schema, the tables from A into > another schema in the same database (let's call it B.a), and replicate the > tables from A into B.a. Is this at all possible? This promises to be a > very powerful tool for us, but I don't know how best to accomplish this. > > Further, I'd like A to be replicated to several institutions. Again, this > is not a real-time operation, but something that doesn't require user > intervention is ideal. > > I tried to run Slony-I last year, but found it to be very frustrating and > never got it to work. (In retrospect, I don't even know if it supports > schema-level replication). > > Any advice would be greatly appreciated! > > Cheers, > Demitri > > Center for Cosmology and Particle Physics > New York University -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
