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z/OS Fundamentals
Mainframe Training Overview

This course provides an examination of z/OS for systems programmers, operators and application programmers. Topics include an introduction to the z/series systems hardware and an exploration of z/OS architecture, system services and functions, storage management mechanisms, and I/O processes. In particular the focus will be to explore the operation of the z/OS environment with an objective of understanding its performance and exploitation opportunities.

Mainframe Training Audience

System programmers, operators, and application programmers that need an understanding of the z/OS environment and the subsystems supported.

Workstations will be used to illustrate concepts and provide basic exposure to the elements of the z/OS environment


Mainframe Training Course duration

5 Days

Mainframe Training Course outline

System Basics
  • Examine how data is represented in computers, using binary, hexadecimal, and decimal.
  • Introduction to memory addresses and basic instruction operation
  • Explore the role of the PSW in machine operations
  • Introduce basic computer hardware inventory: CPU, Memory, and I/O devices
Programs
  • Examine basic program structure.
  • Introduction to Linkage Editor functions
  • Illustrate connection between data, JCL and programs
  • Introduction to basic TSO/ISPF and SDSF
History and Overview of z/OS
  • Evolution of operating systems from MVT/MFT to OS/390 and z/OS.
  • Examining LPARs and parallel sysplex configurations.
The IPL Process
  • Review the IPL process
  • Steps in systems initialization
System Services and PARMLIB
  • Interrupts and interrupt handling
  • PARMLIB definitions related to system functions
  • System Address spaces
Storage Management Mechanisms
  • Real storage management:
    • Central and expanded storage usage
  • Virtual storage management:
    • Paging/Swapping mechanisms
  • Auxiliary storage management
Task Management
  • Review of initiator/terminator functions
  • Address spaces and task control
I/O Processing
  • Introduction to DASD hardware functions:
    • CKD, ECKD, and FBA devices
    • Parallel Access Volumes (PAV)
    • Volume Affinity
  • Components of I/O operation:
    • Introduction to channel command processing
  • Access method services
  • Caching mechanisms
Access Methods and Data Bases
  • Data set organization and access methods:
    • Sequential access (SAM)
    • Basic Partitioned Access (BPAM)
    • Basic Direct Access (BDAM)
    • VSAM processing (ESDS, KSDS, RRDS)
  • Introduction to data base processing concepts
Resource Management
  • Examine basic objectives in managing system resources
  • Explore the process of defining objectives
  • Discuss the process WLM uses to make decisions and monitoring requirements
  • Scheduling environments
  • Intelligent Resource Director
System Managed Storage
  • Introduce DFSMS concepts
  • Review SMS components
Introduction to Basic Communication Services
  • Basic networking and configurations
  • TCP/IP overview and function
  • VTAM/SNA overview and function
Introduction to z/OS Subsystems and Services
  • Overview of JES2 operation and function
  • Introduction and overview to CICS and IMS
  • Additional subsystems including:
    • Unix System Services (USS)
    • Security
    • Performance Management Software
    • Diagnostics and Debugging Software

 
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