Z/OS System Services
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This course presents the structure and control blocks of the z/OS BCP and system services. It prepares the z/OS system programmer to identify potential bottlenecks and performance problems, perform initial error symptom gathering, and identify opportunities and requirements for tailoring a z/OS system.
This course also provides prerequisite information needed for further training in specialized areas such as system measurement, tuning and problem determination. After completing this course, you will be able to:
- Explain the z/OS functions and control blocks necessary to support a task in a multitasking and multiprocessing environment
- Describe the software and hardware functions that allow a program to interact with programs running in other address spaces, use data in other address spaces, and use data in data spaces
- Trace the flow of an I/O operation from the initial request in the application program through the completion of data transfer
- Identify the control blocks that describe the current status of an I/O request
- Describe the functions of the z/OS Virtual, Real, and Auxiliary Storage Managers
- Describe the functions performed by the Recovery Termination Manager and recovery management components to minimize failure impact and enhance error correction
- Select the appropriate IBM publication to provide further technical information (SRLs, Technical Bulletins, Self-study and other z/OS courses)
- Describe the services provided by cross system extended services (XES).
- Identify and explain the purpose of the cache, list, & lock structures.
- Plan the implementation of the global resource serialization STAR environment.
We work with the following best of breed training partners using our bulk buying power to bring you a wider range of dates, locations and prices.
System Introduction (4 topics)
- z/OS Review
- z/OS System Components Review
- Introduction to Control Blocks
- Basics of z/Architecture
Operating Environment Initialization (2 topics)
- System Libraries
- Initial Program Load
Task Management (6 topics)
- Task Dispatching
- Service Request Scheduling
- Program Managing
- Serializing Resources
- Supervisor Calls
- Status Saving on Interrupt
Addressability (3 topics)
- Addressability Review
- Cross Memory Services - Addressability to Two Address Spaces
- Extended Addressability to Multiple Spaces
Input/Output Supervisor (4 topics)
- I/O Definition and Initialization
- I/O Request Flow
- I/O Interrupt Flow
- Error Handling
Storage Management (5 topics)
- Storage Management Review
- A Programmer's Use of Storage
- Paging and Swapping
- Coupling Facility Storage
Recovery Termination Manager (RTM) (5 topics)
- RTM Overview
- Preparing the Environment
- Normal Termination Processing
- Abnormal Termination Processing
- Recovery Management Support
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