Discovery Data Manager failed to read the site control file for site "%1". Because the site database maintains the site control ...

%11Discovery Data Manager failed to read the site control file for site "%1". Because the site database maintains the site control files for this site and all sites beneath it, Discovery Data Manager reads site control files only from the site database.%12

Possible cause: SQL Server problem.
Solution: 
1. Review the immediately preceding status messages from this component about SQL Server errors.
2. Verify that this computer can reach the SQL Server computer.
3. Verify that SQL Server services are running.
4. Verify that the site can access the site database.
5. Verify that the site database, transaction log, and tempdb are not full.
6. Verify that there are at least 50 SQL Server user connections, plus 5 for each Configuration Manager Console.

If the problem persists, check the SQL Server error logs.%0