I've had some issues with pg_upgrade and 9.4. For my test systems, as I didn't really have the resources to diagnose
whatwas going on, I just used a pg_dumpall to unload the 9.3.3
instance and then just ran psql to load the output from pg_dumpall.
The more wonderful part of installing different minor versions of postgresql, is that most O/S packages put the
binariesand the default data directories in slightly different
areas, so they can co-exist, just not necessarily run at the same time without specifying different connect ports.
On 2/11/2015 9:27 AM, David F. Skoll wrote:
> On Wed, 11 Feb 2015 09:04:44 +0000
> Greg Clough <greg.clough@cwtdigital.co.uk> wrote:
>
>> Have you investigated the "Replication Slots" feature that's new in
>> 9.4. It sounds like what you want:
> Yes, it is exactly what I want... thanks!
>
> Now to plan the upgrade from 9.1 to 9.4... it's not exactly trivial.
> The database is about 400GB which is large enough to be unwieldy and it
> powers our anti-spam service... that means we can't be down for very
> long. :( Time to re-familiarize myself with pg_upgrade...
>
> Regards,
>
> David.
>
>