OS/390 Structure and Logic - A Practitioner Series Course Offering Copyright © 2000 Mentor Services Corp - 200 White Plains Road - Tarrytown - NY 10591.

Introduction: To be an effective diagnostician or to develop exits to modify the behavior of OS/390, a systems programmer must understand the logic flow of the OS/390 control program and know its internal structure. By knowing the system logic, the programmer becomes more effective at locating system problems and performance bottlenecks. Such knowledge also helps to recognize opportunities to tailor the system to meet an installation's needs. This course introduces the programmer to the control block structure of the OS/390 basic control program. At the same time, it explores the logic flow of the programs that manipulate these control blocks. Functions such as task management, interrupt handling, recovery/termination, lock management, timer supervision, I/O supervision, dispatching, virtual, real, and auxiliary storage management and are all covered in detail. This course prepares the programmer for further internal study of OS/390 subsystems. Audience: This course is intended for systems programmers who maintain, debug, customize, tune or install the OS/390 operating system. Prerequisites: A working knowledge of OS/390 concepts, which can be obtained by attending OS/390 Concepts and Facilities or an equivalent course. Objectives:  On completion of this course, the student should be able to: describe the flow of an I/O operation through the system and identify the control blocks used in each step describe the control blocks used to manage all forms of storage in the system and describe the system functions that act upon them describe the functions and control blocks used to support tasks and address spaces in an MP environment describe the flow of control in the recovery/termination manager and the control blocks it uses to aid in recovery describe the control blocks and functions that make communications between address spaces possible Duration: This course is 5 days long.