I have not used any tools specific to derby. I have used a generic java profiler to find cpu and memory leak issues. Mostly I have used optimizit, which is not an open source tool. I know others have used the profiler tools that come with the jdk installation. I don't know if there are any open source java profile analysis tools out there, if anyone knows of an open source java profile/memory analysis tools please post the info to the list.
I have profiled Derby with EclipseProfiler (http://sourceforge.net/projects/eclipsecolorer/)
It's actually quite good, and integrated into eclipse.
Steen
