Deactivating a command exit

There are times when you might want to deactivate a command exit routine, perhaps because its function is not required at particular times or because you want to modify the routine. You can deactivate a command exit routine in either of two ways:

• Specify, on the .CMD statement of the appropriate MPFLSTxx member, the name of a command exit that does not exist in SYS1.LINKLIB, such as ‘USEREXIT(NONE)’. Enter the SET MPF=xx command to refresh the MPFLSTxx member.

  This action effectively deactivates any command exits that were enabled during the prior MPFLSTxx activation. The system issues an informational message that can be ignored in this case.

• Enter the SET MPF=NO command to disable all active MPFLSTxx members. Remove the exit name from the .CMD statement of the appropriate MPFLSTxx member and enter the SET MPF=xx command to resume MPF processing.
  : Entering the SET MPF=NO command causes all installation-specified MPF options to be deactivated. IBM-supplied defaults are used until the installation re-activates its MPFLSTxx members.