After a CPU hotplug event, the record size for the running operating
system data collection is no longer correct. The appldata_os module tried
to stop the faulty data collection but received an error from the z/VM
diagnose call DIAG 0xDC. Any data collected with the current record size
might be faulty.
User response
Try to restart appldata_os monitoring. For information about stopping
and starting data collections see "Device Drivers, Features, and
Commands". For information about the return codes see the section about
DIAGNOSE Code X'DC' in "z/VM CP Programming Services".