1.4 Division of responsibilities

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In order to get the required levels of availability and performance for the sysplex, it is vital that the MVS Systems Programmers have a solid understanding of how System Logger works and the effect of changing Logger and log stream parameters. However, when defining a log stream for an exploiter such as CICS or IMS, information is required that is normally not available to the MVS Systems Programmers.

Similarly, when deciding on the appropriate parameters for a given log stream, it is important to understand the effect that different log stream parameters can have, both on that log stream, and on System Logger in general.

Therefore, we recommend that the MVS Systems Programmers read all the chapters concerning System Logger, including the chapters related to the subsystems (meaning basically to read Chapter 1 through Chapter 8). Equally, we recommend that the Subsystem Systems Programmers read the chapter relating to the subsystem they are managing, for example, the CICS System Programmer should read the CICS chapter, and also the chapters that are dealing with the genaral concepts of the logger environment, such as:

Chapter 2, "System Logger fundamentals" on page 7
Chapter 7, "Logger operations" on page 243
Chapter 8, "System Logger performance and tuning" on page 263
Chapter 9, "Disaster Recovery considerations" on page 293

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