--- In firebird-support@yahoogroups.com, "robertgilland"
<robert_gilland@b...> wrote:

> >
> > If it is what I think, then it is normally caused by badly

written

> > UDFs. Check the firebird.log, has the server been restarted by

the

> > guardian (assuming SS). The other possibility is hardware fault.
> >
> > Adam
>
> This is the error message we received
> ISC ERROR CODE:335544741 ISC ERROR MESSAGE: connection lost to
> database
>
> This is happenned during processes incurring large amounts of
> inserts/updates. No UDF is involved in these processes.
>

I assume you have checked any triggers that may be fired by these
operations for UDF calls.

Did the firebird.log say anything of interest at that point in time?

Is the process being run locally or is it initiated from a client (as
in could there literally be a connection lost)?

Adam