@ https://v8doc.sas.com/sashtml/vms/zs-batch.htm
"SAS batch mode is equivalent to OpenVMS batch mode. It is useful for SAS programs that require large amounts of time and memory. In batch mode, you submit a job to an OpenVMS batch queue, and the job awaits execution along with batch jobs that have been submitted by other OpenVMS users. The amount of time before your job executes depends on how many other jobs are in the input queue, on what priority the operating environment has assigned to your job, and how your batch queue(s) is configured."