On Thu, Sep 7, 2017 at 1:16 AM, Robert Inder <rob...@interactive.co.uk> wrote:
> > > On 6 September 2017 at 20:47, Jeff Janes <jeff.ja...@gmail.com> wrote: > >> >>> Have I misunderstood something? Or is Postgres not actually configured >>> the way I think it is? >>> >> >> The standby will wait for ten minutes to obtain the lock it wishes to >> obtain. In 9.4, if something other than dump of database b was already >> blocking it for 8 minutes before the dump starts, then the dump of database >> b will only have 2 minutes, not 10, before it gets cancelled. >> > > Hmmmm... > You're saying that the time for dumping database b may be spent 8 minutes > waiting on a lock then 2 minutes actually dumping. > No, I'm saying that maybe the replay process was already waiting for something else for 8 minutes before the pg_dump of database b even attempted to start. So it would be cancelled after 2 minutes. Are these database a, database b, etc. different databases in the same postgres instance (CREATE DATABASE A) or are they entirely different postgres instances (initdb -D /opt/database_a)? Your original description of different unix users with different installations made me think the 2nd case is the one, but just want to make sure. Cheers, Jeff