The tomcat classes from the previous run remain

Question

I am running an application that uses spring, hibernate, jsf, etc. The application also uses ha-jdbc to make databases available. when the application is deployed for the first time, the application runs smoothly, but when it is not deployed and deployed back, tomcat gives the following error:

The following web applications were stopped (rebooted, not deployed), but their classes from previous launches are still loaded into memory, causing a memory leak (use the profiler to confirm):

I am wondering how to get rid of this problem. any genius?

early.

Answer 1

use a profiler (visualvm will do), take a heap snapshot, find lingering objects, find the link chain and think about why they are still referencing.

or just restart tomcat for each deployment.