Fw: replication

Adam Lang
Systems Engineer
Rutgers Casualty Insurance Company
----- Original Message -----
From: "Adam Lang" <aalang@rutgersinsurance.com>
To: "Stephan Szabo" <sszabo@megazone23.bigpanda.com>
Sent: Thursday, September 21, 2000 1:41 PM
Subject: Re: [GENERAL] replication


> Plus, I don't want to replicate on a per insert/update basis.  I would
like
> to do it as a large batch during off hours.
>
> Adam Lang
> Systems Engineer
> Rutgers Casualty Insurance Company
> ----- Original Message -----
> From: "Stephan Szabo" <sszabo@megazone23.bigpanda.com>
> To: "Daryl Chance" <dchance@valuedata.net>
> Cc: <pgsql-general@postgresql.org>
> Sent: Thursday, September 21, 2000 12:59 PM
> Subject: Re: [GENERAL] replication
>
>
> > On Thu, 21 Sep 2000, Daryl Chance wrote:
> >
> > > Could this possibly be done using triggers?  I'm new to
> > > postgres, but I know on a project I was doing using oracle
> > > the dba could setup triggers to run on the OnInsert() (not
> > > sure what it's actually called in oracle...).  Do maybe
> > > on the "OnInsert" of table foo you could do:
> > >
> > > Insert into foo@remotesite1 ....
> > >
> > > Is this possible in postgres?  I'm looking at using postgres
> > > for the next version of my SW and if replication isn't in,
> > > I'm gonna need something like this :).
> >
> > You could probably write a C trigger that would propogate
> > changes, except that there are still problems.  What do you
> > do when you roll back the transaction?  Currently, there
> > aren't triggers for transaction start and end.  Triggers that
> > do stuff outside the database right now are a bad idea unless
> > you have some other mechanism to determine whether something
> > was really supposed to be done.  It could be done, but isn't
> > trivial.
>