Run the following script in the content database:

SELECT o.[Name] AS 'DatabaseName',
    Instance.[Name] AS 'DatabaseInstance',
    [Server].[Name] AS 'DatabaseServer'
FROM Objects AS o
    INNER JOIN classes c on c.id = o.classid     
    LEFT JOIN Objects AS Instance ON o.ParentId = Instance.Id
    LEFT JOIN [Objects] AS [Server] ON Instance.ParentId = [Server].Id
    WHERE c.Fullname LIKE '%Administration.SPConfigurationDatabase%'
    OR c.Fullname LIKE '%Administration.SPContentDatabase%'
    OR c.Fullname LIKE '%Administration.SharedDatabase%'
    OR c.Fullname LIKE '%Administration.SearchSharedDatabase%'