Before saving, initializing, and reloading the SSdb, you may also want to check the number of old Autodiscovery results that you have. Scheduled discoveries save the results as models which also contributes to the size of the ssModelAttrs.db file.
1. In the Locater view, create a new search for Model Type Name Equal To AdiscResultSet
2. In the Restults, make sure the "Creation Time" column is showing.
3. Delete the older AdiscResulSet models.
4. Save the SSdb, intiailize, and reload it.
Further info is available here:
https://ca-broadcom.wolkenservicedesk.com/external/article?articleId=43994