The “14” and “6” in those driver names refer to the JVM they were written for. If you’re still using JDK 1.4 I’d say you have a serious problem and need to upgrade. JDK 1.4 is long past its useful support life. It didn’t even have generics! JDK 6 u21 is the current production standard from Oracle/Sun. I’d recommend switching to it if you haven’t already.