It can happen to get the following SA78 abends referring to ESPCCHK step of some jobs :
What could be the cause and how to fix it
Release :
Component : ESP WORKLOAD AUTOMATION
The reason for these abends are basically orphaned DIV blocks. Same problem also cause SVC dumps to be partial as well. It is not a dataset size issue. This problem is fixed by the following IBM APAR -
OA63191: HUNG DIV I/O DUE TO ORPHAN RVR WITH OVERLAPPING RANGE