gtpa2m0bApplication Programming

Functions Performed by the TPF System

The TPF system performs the following functions:

Most operating systems perform all of the preceding functions. The performance differences of each can be attributed in large part to the concepts employed to do each function. It must be assumed in designing a real-time, high-availability system that the user's business needs cannot allow the operating system to be taken down to perform maintenance functions. TPF facilities therefore are designed, and the user's applications must be designed, for database update and maintenance to be performed in real-time and still permit good response time. For the same considerations, should a system failure occur, the restart process is rapid and uncomplicated, making most restarts successful and achievable in seconds.