I disabled and removed the CTM_Postgre.service as it didn't help (and I didn't want too many moving parts left out there).
I did find a post https://superuser.com/questions/1016827/how-do-i-run-a-script-before-everything-else-on-shutdown-with-systemd that I think is getting me closer. I tried RequiresMountsFor=/data00 which starts the script much sooner but unfortunately the postgresql instance is unreachable by the time the script gets there. These are two unique datacenter shutdowns: ctmdist & ctmlinux Oct 11 09:20:00 kccontrolmt01 stop_ctmdist_server.sh[10316]: setenv: Too many arguments. Oct 11 09:20:00 kccontrolmt01 stop_ctmdist_server.sh[10316]: Stopping CONTROL-M application Oct 11 09:20:00 kccontrolmt01 stop_ctmdist_server.sh[10316]: SQL Server is not running. Oct 11 09:20:00 kccontrolmt01 stop_ctmlinux_server.sh[10318]: setenv: Too many arguments. Oct 11 09:20:00 kccontrolmt01 stop_ctmlinux_server.sh[10318]: Stopping CONTROL-M application Oct 11 09:20:00 kccontrolmt01 stop_ctmlinux_server.sh[10318]: SQL Server is not running.
