Whether or not checkpoint/restart is used, abnormal termination causes the system to write a SYSABEND or SYSUDUMP data set if you provide a SYSABEND or SYSUDUMP DD statement. The system uses its own data control block to write the data set, and it opens the data set during abnormal termination processing. You can code or omit the SYSOUT parameter on the SYSABEND or SYSUDUMP DD statement.

When the SYSOUT parameter is coded and automatic restart occurs after abnormal termination, the SYSABEND or SYSUDUMP data set is not printed for step restart. Because the SYSABEND or SYSUDUMP data set is created by the job step, it is deleted during restart.

In all other cases, the SYSABEND or SYSUDUMP data set is printed, whether or not the restart is successful. If a second abnormal termination occurs, a second SYSABEND or SYSUDUMP data set is written. The same rules that apply to the first data sets also apply to the second data set and to all subsequent data sets.