> Does anyone know why this sometimes occurs? What is frustrating is
> that I see nothing in the ibserverlog; nothing. FWIW, I get the
> error VERY rarely, and usually only in high-traffic situations where
> I have 20-23 connections hitting the database from a single
> application. I am currently not using the JayBird connection pool.
> Currently I am just killing the connection so it cannot be used
> again, but it would be nice to know what is happening. TIA.

335544327=invalid request handle

It, most likely, happens only then, when you have prepared some statement,
used it, then some "fatal" error happened, JayBird recycled the connection
(at this point handle is no longer valid) and your application tries to
reuse that prepared statement. This error means only that your prepared
statement is no longer valid and should be re-prepared.

Roman