A couple of things, (1) what are the values for driver, url ? (2) Are you sure the DSN is set up properly?, and (3) are you sure the Oracle ODBC driver is installed?
To help, I need the values indicated in (1), e.g., jdbc.odbc.myOracleDatabase would be a possible value for the JDBC url. For (2) you would need to have registered the DSN myOracleDatabase using Windows ODBC administrator (odbcad32.exe, which is located in C:\WINNT\system32). Finally, Oracle has an ODBC
test tool. I beleive it is installed under start->programs->oracle home (?)->newtork administration
Hope this helps.