jdbc & tomcat

So I'm using postgresql 7.2, redhat linux 7.1, jakarta tomcat 4.x, j2sdk
1.4.

I have a jsp that instantiates a bean that creates a Connection and
queries a table called dw_adcosts.

This table is updated nightly with data from another database.  Until
recently, this update was done with a DELETE followed by multiple
INSERTs.  This eventually caused performance problems since I wasn't
doing a VACUUM after the DELETE, so I decided to DROP the table and
re-CREATE it each time (I already had meta-info about the table stored
in an xml document, so re-creating it wasn't a problem).

THIS is the problem:  Since I first dropped the table, my jsp doesn't
work.  I suspect this is not a postgresql problem, but I'm hoping
someone has some ideas anyway.  When I try to access the jsp, the bean's
Connection throws this exception:
java.sql.SQLException: ERROR:  Relation "dw_adcosts" with OID 597084 no
longer exists

I thought perhaps this was something weird with the pgjdbc driver, so I
got the shiniest, newest version.  Restarted Tomcat.  Still get the error.

I can "see" the table just fine using psql.

If I can just get the jsp working again, I think I'll just TRUNCATE the
table from now on...but my problem is that even with restarting tomcat I
get this error.  I know jsp's get compiled, but the bean creates a new
Connection each time its
"getTheOutputThatTheJspNeedsOrSomeSimilarMethodName()" method is called.

Anyone have any thoughts on this?

Thank you,
Steve Linabery