This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
The error has most likely nothing to do with the JDBC driver; that's just a message that the web app can't be shut down properly. If you want to avoid it, unregister the driver at shutdown time, possibly through a ServletContextListener.
To learn about the actual problem that prevents the web app from starting up, check the other log files.