> > > >Hi Chris, > > > >This sounds like a candidate for pg_logical replicating from the > >old to new system. > > Can you point me to a good guide as to how to easily set this up for > one database and would work between pg 9.4 and pg 11.5? > > cheers, > > Chris Hi Chris, Here is on for 9.4 to 10.3: https://hunleyd.github.io/posts/Upgrading-PostgreSQL-from-9.4-to-10.3-with-pglogical/ and another article: https://www.depesz.com/2016/11/08/major-version-upgrading-with-minimal-downtime/ It is a pretty straightforward procedure and really cuts the time needed for an upgrade. Although, as Tom mentioned maybe just bumping your maintenance_work_mem up to 1g or so may make the index create time reasonable. Regards, Ken
