Audience
This course will benefit anyone involved in the tuning and basic setup of OS/400 systems.
The course is taught using version R520.
Prerequisites
Before attending this course delegates should be able to:
- Start and stop the operating system.
- Start and stop subsystems.
- Manage job, message and output queues.
- Describe security concepts and create user profiles.
Duration
2 days. Hands on.
Course Objectives
This course teaches delegates how to balance the workload of the iSeries system to ensure optimum performance. This invloves managing workloads, measuring system performance and tuning the operating system to meet processing requirements.
Course objectives include:
- Manage jobs by modifying subsystem descriptions, controlling batch jobs and tailoring job descriptions.
- Create unique environments to run jobs.
- Tune the performance of the system using pools/activity levels, execution parameters and system values.
Course Content
Creating subsystems, including:
• Guidelines for pools, work entries and priorities.
• Basic system tuning WRKSYSSTS.
Paging DB/NDB faults, activity levels and dynamic tuner (QPFRADJ).
Transferring to another subsystem, rerouting between pools.
Key system values affecting performance.
Managing storage, batch commands, synchronous and asynchronous I/O processing.
Internal job structure.
Task-dispatcher:
• Active/wait/ineligible states.
• Timeslice.
• PURGE - *YES/*NO.
Performance Advisor for basic tuning.