CA Datacom MUF environment running in z/VSE 6.2 got upgraded from version 11.0 SP5 to 12.0 .
After running for a couple of hours the MUF abended with:
F4 0004 CEE3322C EXECUTION ABNORMALLY TERMINATED WITH USER-ABEND CODE 4093 AND
REASON CODE 0056.
Release : 12.0
Component : CA DATACOM/DB for z/VSE
z/VSE LE/370 default value for LE option ALL31 is not good for the MUF.
CA Datacom 12.0 uses IBM-C and not CA-C anymore.
The z/VSE LE/370 default value for ALL31 is ALL31=((OFF),OVR) and the HEAP Default value is HEAP=((32K,32K,ANYWHERE,KEEP,8K,4K),OVR).
That is not what is needed for the Datacom MUF .
The goal is to run as much as possible in 31 bit memory.
Override the default LE system values by starting the MUF using following PARM:
00243 // EXEC DBMUFPR,SIZE=DBMUFPR,PARM='ALL31(ON),STACK(12K,4K,ANY,KEEP),', X