From: | Guillaume Cottenceau <gc(at)mnc(dot)ch> |
---|---|
To: | Vladimir Sitnikov <sitnikov(dot)vladimir(at)gmail(dot)com> |
Cc: | List <pgsql-jdbc(at)postgresql(dot)org> |
Subject: | Re: v2 protocol: is it still used? |
Date: | 2016-08-05 13:53:36 |
Message-ID: | m3oa578gpr.fsf@mnc.ch |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-jdbc |
Vladimir Sitnikov <sitnikov.vladimir 'at' gmail.com> writes:
> Guillaume Cottenceau <gc(at)mnc(dot)ch>:
>
> The only workaround I found back then,
> was to use protocol v2 (IIRC prepared statements are fully client
> side in protocol v2?). I noticed recently though that it's not
> going to be able anymore soon, because the 9.5 backend breaks on
> the driver passing autocommit=true anyways.
>
>
> Workarounds exist for v3 as well: for instance, completely disable usage of
> server-prepared statements.
> Alternatively, we could even implement "use server-prepared statement at most 5
> times" (so the backend never switches to a generic plan).
Thanks for the hints!
> I wonder what would be the best way to handle current protocolVersion=
> 2 installations:
> 1) ignore protocolVersion=2 and just use v3
> 2) throw exception "A connection could not be made using the requested protocol
> 2"
>
> Even though #1 might not be that expected, however I believe it will provide
> smooth migration to never pgjdbc versions without "manual configuration changes
> here and there"
I humbly think #2 is more reliable and clear.
--
Guillaume Cottenceau
From | Date | Subject | |
---|---|---|---|
Next Message | Dave Cramer | 2016-08-08 13:52:00 | Sorry I rejected this by accident |
Previous Message | Vladimir Sitnikov | 2016-08-05 13:41:47 | Re: v2 protocol: is it still used? |