Question & Answer
Question
What should I as an InfoSphere Classic Federation user be aware of when upgrading z/OS to version 1.9?
Cause
Z/OS closed an MVS security issue resulting from applications acquiring CSA in Key 8. At z/OS 1.8 the default was ALLOWUSERKEYCSA(YES) for compatibility, with a default of NO to be set in a later release. z/OS V1R9 now sets the default in DIAGxx member of SYS1.PARMLIB to ALLOWUSERKEYCSA(NO). This resulted in S0C4 or B78 - 5C abend in Classic Servers.
Answer
You need to configure for ALLOWUSERKEYCSA(YES) to run Classic Servers.
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Document Information
Modified date:
16 June 2018
UID
swg21394214