This course provides a detailed examination of z/OS for systems programmers. Topics include an introduction to computer systems hardware and an exploration of 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.
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
5 days
Mainframe Training Course outline
Introduction to Computer Systems Architecture
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Examine processor architecture and its role in supporting z/OS facilities.
Introduction to storage hierarchy: L1 and L2 cache memories and various architectural enhancements to enable processors to achieve their rated speeds.
Review of processor power ratings and their associated metrics.
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z/OS Architecture
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Interrupt handling and SVC functions
Address space structure
Cross memory services
Logical partitioning (LPAR)
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System Initialization (IPL)
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IPL process details
IPL Program functions
Nuclear Initialization Program
Master Scheduler Initialization
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System Services and Functions
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Role of z/OS Dispatcher
Task management
Resource serialization
Recovery/Termination management
Virtual Lookaside Facility (VLF)
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Storage Management Mechanisms
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Real storage management:
Central and expanded storage usage
Virtual storage management:
Paging/Swapping mechanisms
Auxiliary storage management
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I/O Processing
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Introduction to DASD hardware functions:
CKD, ECKD, and FBA devices
Parallel Access Volumes (PAV)
Volume Affinity
Disk arrays (RAID)
Components of I/O operation:
Introduction to channel command processing
Access method services
Caching mechanisms
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z/OS Exploitation Opportunities
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Dataspaces/Hiperspaces
Access register usage
Batchpipes
Hiperbatch/DLF
Batch LSR
Parallel sysplex
Data buffering
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z/OS Workload Management
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Introduction to WLM Goal mode
Metrics associated with performance objectives
Basic control mechanisms of WLM
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z/OS Enhancements
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64-bit storage addressability
WLM enhancements
Intelligent Resource Director
Workload licensing
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