System Description › SMF Logstream Dump Processing › Logstream Dumping Exit Registration

Logstream Dumping Exit Registration

z/OS 1.12 and above (and z/OS 1.9 through 1.11 with maintenance) require that all user exits called by the IBM SMF utility programs IFASMFDP and IFASMFDL be registered. The registration is done with the SMFDLEXIT and SMFDPEXIT parameters in the SMFPRMxx member in PARMLIB.

CA SMF Director makes use of IFASMFDL when running the dump process if SMF logstream recording is being used. To control IFASMFDL, CA SMF Director makes use of the three user exit points in IFASMFDL and requires that the exits be registered.

The three exits are as follows:

SMFDLX1

Used as User Exit 1 in IFASMFDL

SMFDLX2

Used as User Exit 2 in IFASMFDL

SMFDLX3

Used as User Exit 3 in IFASMFDL

To ensure that these exits are allowed to be called by IFASMFDL, the following statement must be in the active SMFPRMxx member in PARMLIB on z/OS systems that have the SMFDLEXIT parameter available:

SMFDLEXIT(USER1(SMFDLX1),USER2(SMFDLX2),USER3(SMFDLX3))

The values in the USER1, USER2, and USER3 subparameters can also contain other exits that may be needed at your site when running IFASMFDL. The only requirement by CA SMF Director is that the names of the exits used in the logstream dump process be present.

CA SMF Director does not require the presence of or changes to the SMFDPEXIT parameter.

For more information on the SMFDLEXIT parameter, including the coding rules, see IBM's MVS Initialization and Tuning Reference guide.