In my experience there are two kinds of CICS installations: Those that take CICS down at night - to run the Batch - and those that don't. There is a loose correlation between what the data manager is and which approach is taken: VSAM-based CICS applications tend to be less 24x7 than DB2 ones, though it's not that clear cut. This post is about how you (really I) might glean how you run CICS...
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cics
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smf30
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