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Mainframe Training Overview
This course provides a detailed examination of z/OS for systems programmers. Topics include an introduction to z/OS architecture, system services and functions, storage management mechanisms, and I/O processes. Each section will also explore the associated control block structures associated with the z/OS operations being looked at. In addition, the student will become familiar with using the z/OS Data Areas documentation, and analyzing numerous dumps and trace data to gather information about problems.
Mainframe Training Audience
Experienced systems programmers with a need for a more detailed understanding of z/OS functions. Due to the technical nature of this material, the student should have several years experience in the z/OS environment.
Mainframe Training Course duration
10 days
Mainframe Training Course outline
Introduction to Computer Systems Architecture
- Examine processor architecture and its role in supporting z/OS facilities.
- Introduction to storage hierarchy: L1 - L4 cache memories and various architectural enhancements to enable processors to achieve their rated speeds.
- Review of processor power ratings and their associated metrics.
z/OS Architecture
- Interrupt handling and SVC functions
- PSA, Fixed Storage, and the CVT
- Address space structure
- Cross memory services
System Initialization (IPL)
- IPL process details
- IPL Program functions
- Nuclear Initialization Program
- Master Scheduler Initialization
- Stand-alone dumps
- IPL related problems
System Services and Functions
- Role of z/OS Dispatcher
- Task management
- Dispatcher traces
- Task and Contents Management Control Block relationships
- Task management dump analysis
Storage Management Mechanisms
- Real storage management:
Central and expanded storage usage
- Virtual storage management:
Paging/Swapping mechanisms
- Auxiliary storage management
- Storage traces
- Storage Control Block relationships
- Storage management dump analysis
I/O Processing
- Components of I/O operation:
Introduction to channel command processing
- Access method services
- I/O Tracing
- I/O Control Block relationships
- Data set internals
- I/O and data set dump analysis
z/OS Exploitation Opportunities
- Dataspaces/Hiperspaces: Access register usage
- Component traces
z/OS Workload Management
- Using SMF Type 99 records
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