All:

My current client is about to apply several microcode changes that are way overdue (about 3 years worth) to bring their 2066 up to level. To make things less comfortable, they are still at the 1.4 version of z/OS (I'm working to get them onto 1.7 and eventually 1.9).

My question is how (if any) do I check whether or not any specific EC/MCL requires a specific level of z/OS or specific PTFs? The field engineer has provided me a list of the ECs/MCLs he expects to add, but provided no reference to any related software requirements.

The client is running a basic sysplex with two LPARs, both at z/OS v1.r4 with toleration PTFs for v1.r7. Many of the MCLs refer to coupling facility fixes, but because we are a basic sysplex, these should not be a concern.

Any hints or suggestions?

Mike Myers
Mentor Services Corporation

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