SYSMDUMP dump

A data set containing the output of a SYSMDUMP has a summary dump for the failing program, plus some system data for the failing task. SYSMDUMP dumps are the only ABEND dumps that you can format with the Interactive Problem Control System (IPCS).

zDMF writes comprehensive system diagnostic information to the data sets defined by the SYSMDUMP DD statement. For timely analysis and diagnosis, all zDMF server-started tasks should be created with the capability to write dump output to a Generation Data Group (GDG) data set, as shown below:

//SYSMDUMP DD DSN=&DHLQ..&VER..&SYSNAME..SYSMDUMP(+1),
//            DISP=(MOD,CATLG,CATLG),
//            DCB=(LRECL=4160,RECFM=FBS),DSORG=PS,
//            UNIT=SYSALLDA,SPACE=(CYL,(500,500),RLSE)

HLQ.IBM.HGZD341.SGZDSAMP contains a member that is named 'DEF@GDG' for use in defining the SYSMDUMP data set GDG base. Alternative methods exist for administering the SYSMDUMP data set. For an example of the zDMF Server JCL, see Running zDMF in a shared storage environment. A sample is also available in HLQ.IBM.HGZD341.SGZDSAMP.(GZDZPROC).