Connection Pooling?

This may be a Postgres JDBC question, but it may also be an
Apache Jakarta/Tomcat question...

I recently moved a few of my pages over from PHP to .jsp and
now I notice that I've got postgres backends sitting around, as
though some of my connections are being pooled or persistant.
As far as I can tell, my scripts are correctly closing the
connections, so they shouldn't be sitting around--does anyone
know if there is some automatic pooling/persistant connecting
happening, either in the JDBC driver or in Tomcat? How would I
turn this off or adjust it down?

--
Adam Haberlach | "Pancakes don't make hardly any juice
adam(at)newsnipple(dot)com | and bacon makes too much."
http://www.newsnipple.com | -- bug-eyed earl
'88 EX500 '00 >^< | http://youlook.org