Hello,
How about to use PROC IOMOPERATE to list and stop your SAS sessions avoidind the jobs to fail the execution.
Here some useful links:
http://blogs.sas.com/content/sasdummy/2016/02/15/using-proc-iomoperate/
http://blogs.sas.com/content/sasdummy/2016/02/20/proc-iomoperate-custom-task/
Best Regards
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