Update SYS1.PARMLIB members

To ensure that your changes remain in effect after an IPL, you must update some members of SYS1.PARMLIB

• You need to perform this task once for each z/OS® system where you want to run IBM MQ .
• If you are using queue sharing groups, you must ensure that the settings for IBM MQ are identical on each z/OS system in the sysplex.
• You might need to perform this task when migrating from a previous version.

1. Update member IEFSSNss as described in Define the IBM MQ subsystem to z/OS.
2. Change IEASYSpp so that the following members are used when an IPL is performed:
   • the PROGxx or IEAAPFaa members used in APF authorize the IBM MQ load libraries
   • the LNKLSTkk and LPALSTmm members used in Update the z/OS link list and LPA
   • the SCHEDxx member used in Update the z/OS program properties table
   • the IEFSSNss member used in Define the IBM MQ subsystem to z/OS