To avoid contention problems between DFSMShsm full-volume dump and DFP scratch, rename, and allocate services, major resource name ADRLOCK and minor resource name NONSPEC are allocated EXClusive when the volume is not known.
Since this process can have an impact on dump performance, you can bypass it by using the following patch:
PATCH .MCVT.+38F X'10' VERIFY(.MCVT.+38F X'00')