web based app using jdbc questions

Hi, 6.0.2CF1 on v5r2

I've created a web based Domino app that relies on webqueryopen Java agents
to fill fields on forms from DB2 on our iSeries box.  The application
allows some basic order status inquiry into a couple pf's & lf's.  I'm
using the AS/400 Toolbox for Java JDBC driver and everything was working
great, response time was great  until...

Two different users inquired on the same order at the same time and things
slowed to a crawl.  It's almost seemed as if one of the user sessions was
waiting for the other to finish the agent before the other would start.
Inquiring on different orders concurrently doesn't have the same effect.

I have not added any code in the agents for multi-threading -- never done
that before actually, don't even know if I need it.  Should I be looking at
making the agents multi-threading, or should I be looking at the
connections, or something else ???

Thanks in advance,
Bob