Re: pg_upgrade failing from 9.3 to 9.4 because "template0" already exists

Matt,

* Matt Landry (lelnet(dot)matt(at)gmail(dot)com) wrote:
> postgres=# select datname, datallowconn from pg_database ;
> datname | datallowconn
> -----------+--------------
> template1 | t
> template0 | t
> postgres | t
> reporting | t
> (4 rows)

Right, as I mentioned, template0 shouldn't have datallowconn as 'true'.
That's why it's being included in the pg_dumpall.

On your test setup, run (as superuser):

update pg_database set datallowconn = false where datname = 'template0';

Then re-run the pg_upgrade.

Thanks!

Stephen