Abstract: One of the major problems confronting the development of on-line, real-time information systems is overall system debugging---the final testing of all the integrated pieces working in concert under load conditions. An indicative analogy can be drawn from a look at similar project schedules (Figure 1), for systems of equal magnitude when one system is a conventional development and the other is on-line, real-time system (OLRT), our analysis will reveal the following:1. Both systems require essentially the same amount of time and effort in the first three (3) phases.2. During unit testing they are also quite similar with OLRT leading slightly.3. In the final phases of integration, acceptance and cutover testing, the OLRT system extends several lengths over a conventional system.