There are multiple methods supported for running a repair in Notification Server. The process is as follows:
Repair All Solutions (Full repair).
Repair the solution (individual repair).
Reconfigure the Database.
Note: Reconfiguring the database will reset the default reports, policies etc. If changes have been made to the defaults, these can be exported before the reconfigure then reimported after the reconfigure. As before any modification to an environment, a backup of the Symantec_CMDB is recommended.