This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
Here is the some of the key things from exception trace:
com.mchange.v2.resourcepool.BasicResourcePool@1587357 - checkinResource( ... ) -- even broken pools should allow checkins without exception. probable resource pool bug.
com.mchange.v2.util.ResourceClosedException: Attempted to use a ThreadPoolAsynchronousRunner in a closed or broken state.