Selecting MPFLSTxx members

You can select a particular MPFLSTxx parmlib member, or a concatenation of MPFLSTxx members (up to 39), in the following ways:
  • Specifying the INIT statement with the MPF keyword in the CONSOLxx parmlib member. CONSOLxx is used at system initialization.
  • Including the SET MPF command in the COMMNDxx parmlib used at system initialization.
  • Issuing the SET MPF command after system initialization.

Two alphanumeric characters are appended to MPFLST to form the name of the MPFLSTxx parmlib member. Multiple members can be specified.

Note: Specify one or more MPFLSTxx parmlib members in either the CONSOLxx member or in the COMMNDxx member. Do not maintain this selection in both members. After initialization, you can issue the SET MPF command to change one or more MPFLSTxx members; however, this change is temporary. At the next IPL, the system uses the MPFLSTxx members specified in the CONSOLxx or COMMNDxx member. See the information about the CONSOLxx and COMMNDxx parmlib members.

If you issue the SET MPF=NO command, the system uses the IBM-supplied defaults for message presentation and for message management. For descriptions of the SET command, see z/OS MVS System Commands.