Use a DISPLAY DUMP operator command to get the dump mode and options in effect for SVC dumps and SYSABEND, SYSMDUMP, and SYSUDUMP dumps. The system displays the mode and options in message IEE857I.
DISPLAY DUMP,OPTIONS
If the options listed are not the ones desired, have the operator use a CHNGDUMP operator command to change them.
See z/OS MVS System Commands for the DISPLAY for more information about dump modes. See z/OS MVS System Messages, Vol 7 (IEB-IEE) for more information about IEE857I.