Re: Extension disappearing act

On Thu, Jun 19, 2025 at 8:09 AM Dominique Devienne <ddevienne(at)gmail(dot)com>
wrote:

> Hi. Little mystery we don't understand. v17.
>
> Create new DB, owned by dedicated new ROLE.
> Create extension (pgcrypto) in our case. Installed in public, owned by
> DB owner role.
> Create schemas and populate them inside the DB.
> This also creates roles associated to those schemas.
> One of the schema is owned by the DB owner (in case that matters).
> Creates functions using pgcrypto, in some of those schemas.
> Drop all schemas (and associated roles), thus pgcrypto-using functins are
> gone.
> Of course, the DB owner role was not dropped. Can't in fact.
> Somehow, the pgcrypto extension has disappeared, as side-effects of the
> drops.
> We did a LIBPQ trace of the command to does all the drops,
>

Suggestion:
1. Turn on statement logging to 'all'. Make sure times are logged
2. Install a trace. this could be as simple as:
select now(), count(*) FILTER (WHERE extname = 'pgcrypto') from
pg_extension ;
\watch
...in psql
3. that should nail the time of the drop. at that time, you can then find
the offending statement

merlin