To prevent a memory leak, the JDBC Driver has been forcibly unregistered

Question

I am getting this message when I run my web application. It runs fine but I get this message during shutdown.

SEVERE: A web application registered the

Answer 1

This is purely driver registration/deregistration issue in mysql`s driver or tomcats webapp-classloader. Copy mysql driver into tomcats lib folder (so its loaded by jvm directly, not by tomcat), and message will be gone. That makes mysql jdbc driver to be unloaded only at JVM shutdown, and noone cares about memory leaks then.