/usr/sbin/dms_start_as_replica is in dms-dr 1.0.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/sbin/../share/dms/dr_scripts/dms_start_as_replica
/usr/sbin/../share/dms/dr_scripts/dms_start_as_replica