by Robert Sample » Thu Jan 21, 2010 6:45 pm
CICS dump data sets are allocated to DFHDMPA and DFHDMPB DD names in the CICS region JCL. I don't recall for sure but I don't think they can be dynamically changed -- only through changing the region JCL (but don't quote me on that). CEMT I DUMPDS will show you whether the A or B data set is active.