Re: [GENERAL] Multiple Postgres Instances

Looks like you are running two PSQL server with THE SAME DATA BASE
DIRECTORY!




On Thu, 21 Jan 1999, Jeff Hoffmann wrote:

> Date: Thu, 21 Jan 1999 08:46:56 -0600
> From: Jeff Hoffmann <jeff@remapcorp.com>
> To: David Giffin <david@agent911.com>
> Cc: pgsql-general@hub.org
> Subject: Re: [GENERAL] Multiple Postgres Instances
>
> David Giffin wrote:
> >
> > Hello,
> >
> > I'm trying to run postgres on two different post 5432 and port 5433 with
> > different data directories for each instance:
> >
> > [ -x /usr/local/pgsql/bin/postmaster ] && {
> >         su -l postgres -c '/usr/local/pgsql/bin/postmaster -S -i'
> >         echo -n ' pgsql'
> > }
> >
> > [ -x /usr/local/pgsql/bin/postmaster ] && {
> >         su -l postgres -c '/usr/local/pgsql/bin/postmaster
> > -D/usr/local/pgsql/data_5433 -p5433 -S -i'
> >         echo -n ' pgsql'
> > }
> >
> > But when I do a psql -p 5433 and drop a table it seems to drop in both
> > instances. If anyone has attempted this before I like to hear how it
> > worked.
> >
> > David
>
> just a guess on my part, but i think what you're going to want to do is
> set the PG_DATA environment variable to /usr/local/pgsql/data_5433 in
> your script before you start the second instance.  they screwed around
> with the ability to specify absolute paths to the data directory in
> 6.4.x and didn't document it, so i'm not sure what the truth is about
> it.  i'm not sure if that's what  is causing the problem in _this case_,
> but it has happened with other cases.  (it makes good sense to require
> you to use environment variables in all cases, as far as i'm
> concerned.)  i submitted some doc patches, but apparently they haven't
> shown up yet.
>
> again, this is just a guess, but an educated one.
>
> jeff
>
> jeff@remapcorp.com
>
>

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