HPO

The HPO system initialization parameter specifies whether you want to use the z/OS® Communications Server authorized path feature of the high performance option (HPO).

HPO={NO|YES}

If you code YES, the CICS® type 6 SVC must be link-edited in your MVS™ nucleus, and defined to MVS in an SVCPARM statement. If the SVC number is not 215 (the default), you must specify the SVC number on the SRBSVC parameter.

If HPO=YES and HPO activation is successful, message DFHSI1600 is issued.

If HPO=YES and HPO activation is unsuccessful, message DFHSI1601 is issued and CICS terminates.

For information about installing the CICS type 6 SVC in your MVS system, and about changing the default number, see Selecting the high-performance option.

Restriction: You cannot specify the HPO parameter in the system console.

Note: To specify HPO in the PARM parameter on an EXEC PGM=DFHSIP statement or in the SYSIN data set, you must define necessary security authorization. See Authorizing use of HPO in PARM parameter on EXEC PGM=DFHSIP statement or in SYSIN data set for more information.