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This course and the associated Part 2 course together form the essential core of the z/OS education curriculum for z/OS Systems Programmers. By attending both components attendees will gain an in-depth insight into the fundamental structure of MVS (now z/OS), enabling further study in areas such as debugging, performance, installation and customisation of the operating system.<br>This course concentrates on laying the ground rules of z/OS in terms of architecture, storage management, as well as the major control blocks and how to interpret them. The course also introduces the major components found in z Systems environments.<br><br>This course is also available for one-company, on-site presentations and for live presentation over the Internet, via the Virtual Classroom Environment service.

A good working understanding of the z/OS environment, from a technician's perspective.

describe the architectural principles governing CPU, Storage and I/O
identify the state of a CPU and describe potential problem scenerios
use IPCS and the debugging guides
describe the principles of Virtual Storage
describe the purpose of AMODE and RMODE
describe a page fault and its consequences
set up a flexible paging/swapping subsystem
explain how dataspaces and hiperspaces work
describe how an IPL works
isolate problems during an IPL
explain the concept of authorised programs.

Architecture

The architectural principles of the CPU; PSW, registers; interrupts system states; PSW swapping; multi-processing; central storage; addressing modes; storage keys; parallel & serial channels; pathing; HCD; LCUs; CCWs; I/O operation; SCSW.

MVS Introduction

The functions of the MVS operating systems; components required to prepare MVS for work; creating address spaces; Job Entry Subsystem; initiators; resource control; interrupt handlers and status saving; dispatching work; I/O requests; Workload Manager; execute the work; exit the work from the system.

Control Blocks, Dumps & IPCS

Using IPCS and the debugging handbooks to locate and interpret major MVS control blocks in a dump; finding main control blocks such as PSA, CVT, ASCB, TCB, UCB; main IPCS menus; IPCS FIND command; IPCS subcommands; IPCS labs.

Virtual Storage Concepts

Loading programs; real storage problems; DAT; segments & pages; page stealing & UIC; page faults; demand paging; dispatching address spaces; swapping & paging.

MVS Storage Management

AMODE & RMODE; common storage; private storage; Virtual Storage Manager; subpools; storage keys; RSM; page faults; segment faults; ASM; page data sets; VIO.

Dataspaces and Hiperspaces

Primary & secondary ASC modes; access registers; using dataspaces; VLF; Hiperspaces.

System Initialisation

Sysgen and IPL processes; the function of the LOAD parameter and the LOADxx member of PARMLIB; concepts of authorised programs; the subsystem interface.

Upcoming Trainings

Join our public courses in our New Zealand facilities. Private class trainings will be organized at the location of your preference, according to your schedule.

Classroom / Virtual Classroom

12 August 2024