Do it yourself #3. ;)
Got the solution.
Regarding to chapter 10.8.2.1 (Using IBM J9) of http://docs.oracle.com/cd/E12095_01/doc.10303/e12548/cjdbc.htm I downloaded the Oracle database Lite 10g and extracted the jdbcjsr169.jar. I added the jar to my classpath, to be more specific as bootclasspath parameter, to avoid a SecurityException...
peace