Stream: Large Systems
Time: 14:00 - 14:45
| Ever wondered how logstreams work? Who uses them? How to define them? Tune them? This session targets a wide audience and will start with logstream basics: What is a logstream? The services provided by the MVS Logger. The utilities used to define logstreams and an explanation of the major keywords. What are staging datasets and offload datasets? When are they created and deleted? How do we report on the current logstream definitions? Then we will look at some of the z/OS components that take advantage of the technology like OPERLOG,LOGREC and SMF. We will touch on subsystem use of logstreams like CICS. I will show some operator commands that can assist us in understanding our Logger status. Finally, we will look at a user case in which specifying inappropriate logstream parameters had a severe performance impact. |
Mike has been a mainframe infrastructure professional since 1987. His fields of specialty include architecture, management, system programming, capacity planning, performance tuning,business continuity,auditing and training. Mike is a freelance consultant. His customers include financial institutes, government agencies, software companies,hardware resellers and training institutes.
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