If it is not already present, you must add the following entry to the program properties table (PPT), which you can find in SYS1.PARMLIB(SCHEDxx).
PPT PGMNAME(CSQYASCP) /* CSQ - THIS IS REQUIRED FOR WEBSPHERE MQ */ CANCEL /* CAN BE CANCELLED */ KEY(7) /* STORAGE PROTECTION KEY */ SWAP /* PROGRAM IS SWAPPABLE */ NOPRIV /* NOT PRIVILEGED */ DSI /* REQUIRES DATA SET INTEGRITY */ PASS /* NOT ALLOWED TO BYPASS PASS PROT */ SYST /* SYSTEM TASK SO NOT TIMED */ AFF(NONE) /* NO PROCESSOR AFFINITY */ NOPREF /* NO PREFERRED STORAGE FRAMES */
The NOSWAP attribute used in earlier releases of WebSphere MQ is no longer necessary, because the WebSphere MQ queue manager controls swapping itself. However, if you have a heavily-loaded WebSphere MQ network and response time is critical, it might be advantageous to make the WebSphere MQ channel initiator non-swappable, by adding the following further PPT entry, at the risk of impacting the performance of the rest of your z/OS system:
PPT PGMNAME(CSQXJST) /* CSQ - MAKE WEBSPHERE MQ MOVER NON-SWAPPABLE */ CANCEL /* CAN BE CANCELLED */ KEY(8) /* STORAGE PROTECTION KEY */ NOSWAP /* PROGRAM IS NON-SWAPPABLE */
Issue the z/OS command SET SCH= for these changes to take effect.
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