Re: Revoke "drop database" even for superusers?

Edson Richter wrote:
> I've a bunch of databases that cannot be dropped in any case.
>
> I was wondering if it is possible to revoke "drop database" permission
for all users, in order that
> even superuser, if he wishes to drop a database, he will need first to
"grant drop database" first.
>
> I know there is already a safety that does not allow dropping
databases in use - I just want to make
> even harder.

You cannot play it over permissions, but what about the following trick:

postgres=# CREATE DATABASE persist;
CREATE DATABASE
postgres=# UPDATE pg_database SET datistemplate=TRUE WHERE
datname='persist';
UPDATE 1
postgres=# DROP DATABASE persist;
ERROR:  cannot drop a template database

Yours,
Laurenz Albe