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
