when compiling the generated files for an Oracle DB, the sample files (guess default ones) are missing. If running hsql first, they get generated. Running on oracle as next does not anything as the generation check omits. Cleaning up brings the whole story back. The solution is to clean, run over oracle, move to temp, clean, run over hsql, copy back the generated oracle and compile. This works, but is probably not what you wanted. Compiling brings the next story - see next post