I has done some performance analysisis for the HSQL and Derby.
Derby is certainly better in terms of DB sizing, throughput and response time. One big problem with HSQL is that the memory keeps shooting up and runs out of memory over time, on the other hand CPU requirements for the HSQL in my application environment were more stable.

--hemant


On Thu, 17 May 2007 Jean T.Anderson wrote :
>David Van Couvering wrote:
> > I thought you all would like to see this thread.
> >
> > http://www.nabble.com/HSQLDB-or-JavaDB-----tf3768495.html
>
>more re h2:
>
>http://kasparov.skife.org/blog/src/java/h2-aci.html
>
>  -jean
>



2007-1-R-N-0223