When you run the lmreread utility, the license daemon starts any new vendor daemons and signals all pre-existing daemons to reread the license files for changes in feature licensing information. See the lmreread man page for options and usage.
Under the following circumstances, you cannot use lmreread to restart the license daemons (see "Stopping and Restarting the License Daemons"):
If you edit the daemon_options file
If you move your license server from one machine to another
You must be a superuser or a designated user through the adjust_flexlm_owner script (see the adjust_flexlm_owner man page) to use the lmreread utility.