Re: Revoke Connect Privilege from Database not working

"Ing. Marijo Kristo" <marijo(dot)kristo(at)icloud(dot)com> writes:
>> Removing the connect privilege with the Postgres Superuser and with the
>> Vault Admin user does not work.
>> postgres=# revoke connect on database "disp_db" from
>> "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00";
>> REVOKE

REVOKE is not being as helpful as it could be here, perhaps:
it is failing to tell you that it's a no-op because there
is no such privilege. You never granted connect on disp_db
to that user so you can't revoke it either.

The privilege that exists by default, per [1], is that
database connect privileges are granted to PUBLIC (the
pseudo-group of all users). If that's not what you want,
you have to do

revoke connect on database "disp_db" from public;

and then grant it out again to the users who should have it.

regards, tom lane

[1] https://www.postgresql.org/docs/current/ddl-priv.html