DFHCSVCU

Entry points

DFHCSVCU

Called by

MVS™

Description

The DFHCSVCU utility program dynamically installs the CICS® TYPE 3 SVC, removing the need to IPL the z/OS® system. This utility replaces a single SVC entry in the SVC table with a pointer to the entry point of the supplied module.

Note: You can use the DFHCSVCU utility program only if you have the required authorization.

DFHCSVCU installs TYPE 3 SVCs only, and the module specified on the PARM statement must be loaded into the link pack area (LPA) before the utility is run. You can load the module by using the following MVS console command:

SETPROG LPA,ADD,MODNAME=module,DSNAME=data set

module is the name of the program to be invoked by the new SVC.
data set is the load library that contains the module.

Specify the SVC to be replaced and the module name to be used in the JCL PARM statement for this program:

//SVCUPD EXEC PGM=DFHCSVCU,PARM=('SVCnnn=progname')

nnn is the number of the SVC to be replaced, in the range 200-255.
progname is the program to be invoked by the new SVC. This program must already be loaded into the LPA.

Returns to

MVS