"G. van Wieringen" <wieri420(at)planet(dot)nl> writes:
> Is it possible that PQexec or CC3260MT.DLL can not handle queries that begin
> with more than 64 characters?
No; what's considerably more probable is that some part of that code
goes belly-up when trying to process a NOTICE from the backend. By
default libpq tries to print notices on stderr; what will happen in
your environment when it does that?
regards, tom lane