Before you perform the customization tasks in this chapter, there are a number of configuration options that you should consider because they affect the performance and resource requirements of WebSphere MQ for z/OS. These options are discussed in the WebSphere MQ for z/OS Concepts and Planning Guide.
In the description of each task in this section, and in Table 3, we indicate whether:
You should review the tasks when you apply corrective maintenance to WebSphere MQ and when you install a new version or release of WebSphere MQ.
None of the tasks require you to IPL your z/OS system, provided that you use commands to change the various z/OS system parameters, and perform Task 12: Update SYS1.PARMLIB members as suggested.
We strongly recommend that all z/OS systems in a sysplex are set up identically, so that queue managers can be quickly created on any system in an emergency.
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