Daniel,

> > As long as the procedure is caling the UDF, it will block, right?
> > Depending on the task the UDF is performing, this may or may
> > not block the server.
>
> Thanks for your quick answers, Martijn.
>
> This looks like a pretty robust setup to me.
> Any objections?

You might want to write this to the Firebird-architect where some
of the Firebird developers hang out... They know the inner workings
of the Firebird engine better than I do :-)

All in all, it sounds much better than I understood from your first
message..

With regards,

Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL
Server
Upscene Productions
http://www.upscene.com