"Joshua D. Drake" <jd@commandprompt.com> writes:
>>> Fail in what way. Hang, not connect, or get an error msg?
> Just verified with customer. Once the problem occurs the first time, the
> customer will continually get the same error message for each subsequent
> connection attempt:
> server sent data ("D" message) without prior row description ("T" message)
During the connection attempt? I don't think libpq can report that
message until it tries to do a regular query (might be wrong though).
Is the client using some application that's going to issue a query
immediately on connecting?
It would be useful to turn on log_connections and log_statement (and
perhaps crank log_min_messages all the way up to DEBUG5) to see if we
can get anything in the postmaster log giving a hint what actually
happens here. A TCP sniff of the connection attempt traffic would be
pretty useful too.
regards, tom lane