I have an Asp.Net MVC 5 website with EntityFramework codefirst approach in a shared hosting plan. It uses the open source WebbsitePanel for control panel and its SQL Server pane
This can also happen when the log file is restricted in size.
Right click database in Object Explorer
Select Properties
Select Files
On the log line, click the ellipsis in the Autogrowth / Maxsize column
Change/verify Maximum File Size is Unlimited.
After chaning to unlimited, database came back to life.