Unsupported frontend protocol 2.0: server supports 3.0 to 3.0 about p3 HOT 4 CLOSED

Are you sure you are using P3 ? I see no P3 objects in the stack trace.

Also, on my machine I can successfully connect to PostgreSQL 14.

Given the phrasing of the error, it seems the server is configured to be a bit more restrictive than usual.

I will look into this protocol 2 vs 3 situation since I am not really aware of that.

from p3.

OK, I was a bit confused, but P3 (only) supports frontend/backend protocol 3.0 (PostgreSQL version 7.4 [2003] and later).

So I guess you are not using P3Client. You could try to use it directly.

    (P3Client new url: 'psql://user:password@localhost') in: [ :client |
        [ client isWorking ] ensure: [ client close ] ].

Or some variation of that.

from p3.

@svenvc my bad !
I was confused by the projects. I wanted to post this on PgMetadata project that is using P3Client to handle Pharo 10, and I posted it here by mistake.
I confirm that P3Client is working perfectly with Postgres 14.

Sorry for the inconvenience.

from p3.

No problem.

from p3.