Identify the z/OS system parameters

Some of the tasks involve updating the z/OS® system parameters. You need to know which ones were specified when the system IPL was performed.

• You need to perform this task once for each z/OS system where you want to run IBM MQ .
• You might need to perform this task when migrating from a previous version.

SYS1.PARMLIB(IEASYSpp) contains a list of parameters that point to other members of SYS1.PARMLIB (where pp represents the z/OS system parameter list that was used to perform an IPL of the system).

The entries you need to find are:

For APF authorize the IBM MQ load libraries:

PROG=xx or APF=aa point to the Authorized Program Facility (APF) authorized library list (member PROGxx or IEFAPFaa)

For Update the z/OS link list and LPA:

LNK=kk points to the link list (member LNKLSTkk) LPA=mm points to the LPA list (member LPALSTmm)

For Update the z/OS program properties table:

SCH=xx points to the Program Properties Table (PPT) (member SCHEDxx)

For Define the IBM MQ subsystem to z/OS:

SSN=ss points to the defined subsystem list (member IEFSSNss)