If the database is deleted or damaged, you cannot restore it from a backup. You can recover it using the utility lmfdbrecover and then reinstalling the licenses. This utility deletes the license database and any system associated files and recreates the database. It starts the License Management Facility and prompts you to reinstall the licenses.
To recover from a corrupt database:
sh lmfdbrecover
If the deployment license database is damaged, you can recover it using a similar utility aslmdbrecover. See the section Recovering from a Corrupt Database in the chapter Installing and Administering Licenses in your Deployment Licensing Guide