From Ingres Community Wiki
Luminary's Test Harness Userclass Generator (THUG) helps developers to test their OpenROAD Application Server (AppServer) Service Call Procedures (SCPs) quickly and easily.
THUG provides a list of all of the SCPs available for a specific AppServer application. Each one of these SCPs can be selected for testing and a screen is displayed that includes fields for all of the input and output parameters required to make the call. Values for these parameters can be entered prior to the SCP being run. When run, the SCP is called with these parameter values. The outcome of the SCP and any parameters that are passed back are displayed once the call has completed.