|From:||Gerhard Hintermayer <g_hintermayer(at)magnet(dot)at>|
|To:||Paul Breen <paulb(at)computerpark(dot)co(dot)uk>|
|Subject:||Re: [INTERFACES] Database replication under Postgres|
|Views:||Raw Message | Whole Thread | Download mbox | Resend email|
Paul Breen wrote:
> Hello all, I wonder if anyone could help me.
> I'm currently working on a project where it is essential that we have some
> kind of replication of our production database. I've found a number of
> 'near' solutions (e.g., doing a piped 'COPY IN/OUT' using psql - one
> local and one remote - from a simple shell script) but this doesn't
> 'synchronise' the data, it just piles ALL the data from one database into
> the other.
> I've also looked into setting up rules on a table to NOTIFY me of an
> insert|update|delete and then have a program that queries the difference
> between the two databases and synchronises them accordingly. This is ok to
> a point but is not particularly elegant or efficient. Basically I was
> wondering if anyone knows of a better way of doing it or if someone has
> written a tool for automating replication with Postgres.
> If we were replicating data from one table to another in the SAME DATABASE
> it would be easy to set up a rule such as:
> CREATE RULE itbl1 AS ON INSERT TO tbl1 DO (INSERT INTO tbl2
> Ideally, I suppose what I am after - and I dare say I'm hoping to much -
> is a simple solution that says the same as the above rule but where
> "tbl2" is a table in a remote host's database.
> I would be really grateful to hear from other users' experiences with any
> form of replication/synchronisation under Postgres.
> Thanks in advance.
> Paul M. Breen
> Computer Park Ltd
> Email: pbreen(at)computerpark(dot)co(dot)uk
What I did to keep 2 databases on two different hosts consistent is the
everytime an insert/update is done ,I call pg_exec for both connections to
two different host.
Don't know if that meet's your needs, but syncronising at the point, where
modifications take place, is the easiest approach.
|Next Message||Peter Mount||1999-12-17 08:35:51||RE: [INTERFACES] JDBC: can't connect in NT 4.0 SP 6 (JRE 1.2.2) a s non-Administrator|
|Previous Message||Sam Hokin||1999-12-16 19:35:15||JDBC: can't connect in NT 4.0 SP 6 (JRE 1.2.2) as non-Administrator|