Re: There should be a way to use the force flag when restoring databases

HI Gurjeet, that woulld be great, all the cases where a FORCE won't apply
make totally sense (either complex scenarios or permission issues)

> It doesn't terminate if prepared transactions, active logical replication
> slots or subscriptions are present in the target database.
>
This will fail if the current user has no permissions to terminate other
> connections
>

Regards

Missatge de Gurjeet Singh <gurjeet(at)singh(dot)im> del dia dc., 19 de jul. 2023 a
les 19:28:

> On Tue, Jul 18, 2023 at 12:53 AM Joan <aseques(at)gmail(dot)com> wrote:
> >
> > Since posgres 13 there's the option to do a FORCE when dropping a
> database (so it disconnects current users) Documentation here:
> https://www.postgresql.org/docs/current/sql-dropdatabase.html
> >
> > I am currently using dir format for the output
> > pg_dump -d "bdname" -F d -j 4 -v -f /tmp/dir
> >
> > And restoring the database with
> > pg_restore -d postgres -C -c --exit-on-error -F d -j 3 -v /tmp/dir
> >
> > Having an option to add the FORCE option to either the generated dump by
> pg_dump, or in the pg_restore would be very useful when restoring the
> databases to another servers so it would avoid having to do scripting.
> >
> > In my specific case I am using this to refresh periodically a
> development environment with data from production servers for a small
> database (~200M).
>
> Making force-drop a part of pg_dump output may be dangerous, and not
> provide much flexibility at restore time.
>
> Adding a force option to pg_restore feels like providing the right
> tradeoff.
>
> The docs for 'pg_restore --create` say "Create the database before
> restoring into it. If --clean is also specified, drop and recreate the
> target database before connecting to it."
>
> If we provided a force option, it may then additionally say: "If the
> --clean and --force options are specified, DROP DATABASE ... WITH
> FORCE command will be used to drop the database."
>
> Using WITH FORCE is not a guarantee, as the DROP DATABASE docs clarify
> the conditions under which it may fail.
>
> Best regards,
> Gurjeet
> http://Gurje.et
>