Maybe you have some instances of classes that never die and colapse the
memory . Try using some tool to check the objects of your aplication. I had
a similar problem and used OptimizedIt (www.vmgear.com) a free demo to check
the behavior of the classes and the Tomcat.
To: Tomcat Users List
Subject: Re: Out of Memory Errors. Help!
are you using a database by chance?
most likely culprit is a badly garbage-collected partly-native database
driver. If you are using the JDBC ODBC bridge driver, you're definitely
having problems. If by chance (just guessing at this point
