Re: Lost replication slots after pg_upgrade.

> On Feb 8, 2022, at 2:08 AM, Julien Rouhaud <rjuju123@gmail.com> wrote:
>
> Because pg_upgrade modifies your primary instance in such a way that a standby
> can't simply keep replicating from it.

Would it work as expected if before pg_upgrade on the standby:

alter subscription my_subscription disable;
alter subscription my_subscription set (slot_name = NONE);

And then after pg_upgrade:

alter subscription my_subscription enable;

I have not tried it yet, but I thought this would be the simplest option.

John DeSoi, Ph.D.