Pieter van Zyl and Espresso Research Group.
OO7J is a Java version of the original OO7 benchmark (written in C++) from Mike Carey, David DeWitt and Jeff Naughton = Univ Wisconsin-Madison. The original benchmark tested ODBMS performance. This project also includes benchmarking ORM Tools. Currently there are implementations for Hibernate on PostgreSQL and MySQL, db4o and Versant.
User Manual.(LINK)| The code is available on Sourceforge.(LINK)| Access is through SVN directory.(LINK)