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.