The Installation and Deployment manual does not mention it, but the User Reference Manual describes sample job SCKRSAMP(C2RJXUNL) to unload (or dump) CKXLOG logstreams. I agree, that is a set-up task you would expect in the installation manual (or at the very least some mention).
The CARLa program in SCKRCARL(C2RLXUNL) copies records that are 1 day old into an output data set, for example a daily GDG, so an excellent part of your "end of day" processing. The sample in the URM shows how you could use the ALLOC command to reduce the number of records processed.
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Rob van Hoboken
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