SMF header and SMF product section

The SMF header describes the system creating the output. The SMF product section identifies the subsystem to which the statistics data relates, which, in the case of CICS® statistics, is the CICS region, the TS data sharing server, the CFDT server, or the named counter sequence number server.

Both the SMF header and the SMF product section can be mapped by the DSECT STSMFDS, which you can generate using the DFHSTSMF macro as follows:

STSMFDS DFHSTSMF PREFIX=SMF

The label ‘STSMFDS' is the default DSECT name, and SMF is the default PREFIX value, so you could also generate the DSECT by coding DFHSTSMF.

The STSMFDS DSECT has the format shown in Figure 1.

Figure 1. Format of the SMF header and product section for statistics records

*        START THE SMF HEADER
*
STSMFDS  DSECT
SMFSTLEN DS    XL2           RECORD LENGTH
SMFSTSEQ DS    XL2           SEGMENT DESCRIPTOR
SMFSTFLG DS    X             OPERATING SYSTEM INDICATOR (see note 1)
SMFSTRTY DC    X'6E'         RECORD TYPE 110 FOR CICS
SMFSTTME DS    XL4           TIME RECORD MOVED TO SMF
SMFSTDTE DS    XL4           DATE RECORD MOVED TO SMF
SMFSTSID DS    XL4           SYSTEM IDENTIFICATION
SMFSTSSI DS    CL4'CICS'     SUBSYSTEM IDENTIFICATION
SMFSTSTY DS    XL2           RECORD SUBTYPE X'0002' FOR STATISTICS
*                                                   (see note 4)
SMFSTTRN DS    XL2           NUMBER OF TRIPLETS
         DS    XL2           RESERVED
SMFSTAPS DS    XL4           OFFSET TO PRODUCT SECTION
SMFSTLPS DS    XL2           LENGTH OF PRODUCT SECTION
SMFSTNPS DS    XL2           NUMBER OF PRODUCT SECTIONS
SMFSTASS DS    XL4           OFFSET TO DATA SECTION
SMFSTASL DS    XL2           LENGTH OF DATA SECTION
SMFSTASN DS    XL2           NUMBER OF DATA SECTIONS
*
*        THIS CONCLUDES THE SMF HEADER
*
*        START THE SMF PRODUCT SECTION
*
SMFSTRVN DS    XL2           RECORD VERSION
SMFSTPRN DS    CL8           PRODUCT NAME (GENERIC APPLID)
SMFSTSPN DS    CL8           PRODUCT NAME (SPECIFIC APPLID)
SMFSTMFL DS    XL2           RECORD MAINTENANCE INDICATOR
         DS    XL2           RESERVED
         DS    XL2           RESERVED
SMFSTDTK DS    XL4           DOMAIN TOKEN
SMFSTDID DS    CL2           DOMAIN ID
SMFSTRQT DS    CL3           USS/EOD/REQ/INT STATISTICS TYPE
SMFSTICD DS    CL3           YES IF INCOMPLETE DATA RECORDED
SMFSTDAT DS    CL8           COLLECTION DATE MMDDYYYY
SMFSTCLT DS    CL6           COLLECTION TIME HHMMSS
SMFSTINT DS    CL6           INTERVAL HHMMSS. See note 3.
SMFSTINO DS    XL4           INTERVAL NUMBER. See note 3.
SMFSTRTK DS    XL8           REQUEST TOKEN
SMFSTLRT DS    CL6           LAST RESET TIME HHMMSS
SMFSTCST DS    XL8           CICS START TIME
SMFSTJBN DS    CL8           JOBNAME
SMFSTRSD DS    XL4           JOB DATE
SMFSTRST DS    XL4           JOB TIME
SMFSTUIF DS    CL8           USER IDENTIFICATION
SMFSTPDN DS    CL8           OPERATING SYSTEM PRODUCT LEVEL
*
*        THIS CONCLUDES THE SMF PRODUCT SECTION

Note:

CICS sets only the subsystem-related bits of the operating system indicator flag byte in the SMF header (SMFSTFLG). SMF sets the remainder of the byte according to the operating system level and other factors. For an explanation of the setting of the other bits, refer to the z/OS MVS System Management Facilities (SMF) manual.
The copy book DFHSMFDS is also provided and can be used to map the SMF header and the SMF product sections of all six subtypes of SMF 110 records written by CICS journaling, CICS monitoring, and CICS statistics.
Fields SMFSTINT and SMFSTINO are only relevant if SMFSTRQT is ‘INT'. Otherwise both values should be ignored.
For TS data sharing, the record subtype is X'0003' and certain fields are not set or are used in a different way. SMFSTPRN and SMFSTSPN contain the server prefix (DFHXQ) and the pool name.
For coupling facility data table (CFDT) servers, the record subtype is X'0004' and certain fields are not set or are used in a different way. SMFSTPRN and SMFSTSPN contain the server prefix (DFHCF) and the coupling facility data table pool name.
For named counter sequence number servers, the record subtype is X'0005' and certain fields are not set or are used in a different way. SMFSTPRN and SMFSTSPN contain the server prefix (DFHNC) and the pool name.

dfha3c00332.html | Timestamp icon

Last updated: Thursday, 27 June 2019