TCJ, which is actually short for TPC-C over JDBC is an easy to use implementation (built in Java) of TPC-C.
TPC-C is an OLTP database benchmark that comes with several divergences.
The TCJ tool is built to simulate an order-entry environment, where different types of transactions (New Order, Payment, Order Status, Delivery, Stock Level) are executed against a database from terminals.
Here are some key features of "TCJ":
· Comes with support for almost any SQL supporting RDBMS with exiting JDBC driver
· TPC-C like (real-usage like) database benchmarking