At 12:52 24/09/2008, you wrote:

>I have two similar DBs. If I process one (attach, select, update,
>detach), exit the app, restart, then process the second, everything
>works fine. If I try to process both DBs without exiting and
>restarting, the app hangs in isc_dsql_execute() when attempting the
>update on the second DB (the selects on the second DB work fine). The
>call stack is
>
>NTDLL! 7c90eb94()
>KERNEL32! 7c80a075()
>FBCLIENT! 015165d1()
>ff006aec()
>
>which to me is not very helpful. Is there something I should (or
>shouldn't) be doing in this situation?

If you tell us what the application is trying to do involving simultaneous connections to two databases, perhaps someone can answer that question for you.

>Is there any mechanism within FB that will help me track the problem?

Well, it very much depends on what's causing the problem. Have you looked at the firebird.log at all?

./heLen