Database Connection Error.

An Error occured connecting to the database engine. Make sure the database engine is set up properly and running.
The appName.properties file has the settings that tell the application which database to connect to.

If the database is up and running and your properties are correct, then make sure your JDBC driver is accessible to the web application by putting it in the web server's class path. There may also be more detailed information on the specific error in the system console for the application server.