Java version: 1.5.0_01,Sun Microsystems Inc.
Java VM: Java HotSpot(TM) Server VM 1.5.0_01-b08,Sun Microsystems Inc.
OS-System: Fedora Core 1: Linux 2.4.22-1.2199.nptlsmp,i386
App server: Jboss-4.0.3SP1
DB: MySql Server 3.23.58 and (optionally install MySql client too as you can use it to debug from the command-line
MySql JDBC Driver: MySql Connector/J 3.1.12
Also note I do not use any Java IDE (see note on setting classpaths)