When I was at P&H Mining, we ran a Compaktor job every evening an hour before the heavy batch cycle started. I set up the job to compact everything that had a fragmentation index of over .300. There were volumes that were compakted almost every day, but most volumes were done rarely.

As far as compacting DFHSM level 1 volumes, they were also run using the fragmentation index above.

Eric Bielefeld
Sr. z/OS Systems Programmer
Milwaukee, Wisconsin
414-475-7434
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