Non-restartable step

The user can label any steps as non-restartable steps. Restart cannot start at a step that is defined as a non-restartable step, even if the step would otherwise be recoverable. When the Restart Step adjustment facility arrives at a non-restartable step, it continues rolling back to a preceding step.

Defining steps as non-restartable steps can possibly cause the restart to not be performed. For example if the step adjustment reaches the first job step but that step is defined as a non-restartable step, restart cannot be performed.

A step can be defined as a non-restartable step in either of two ways:

• A special DD statement can be placed in the JCL of the job. This impacts restarts of that job only. For more information, see Indicating non-restartable steps: CTRNORST DD.
• An appropriate parameter definition can be placed in the Control-M/Restart PARM library. Depending on which member in the library is used, the parameter can apply to all jobs or only to the relevant job. For more information, see NONRESTARTABLE_STEP parameter and NONRESTARTABLE_PGM parameter.