Classnotfoundexception on generating Mobile Business Object

Hi,

I try to generate MBO (SUP 2.1) based on Oracle table, but when I drag one table to mobile application diagram, I always get the following error:

An internal error occurred during: "Generate Mobile Business Object". java.lang.RuntimeException: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver

I already set the classpath for the Oracle ojdbc jar in jdbc driver definition and connection to Oracle is ok. I think, the Eclispe plugin, which generates the MBO, does not know the jar. Any ideas, how can I fix this ?

Thanks,

Thomas