Which dashboard tile displays the number of databases currently affected by problems?

The dashboard tile that displays the number of databases currently affected by problems is indeed related to database monitoring and health. The Database health tile provides specific insights into the state of the databases being monitored, including any ongoing issues or performance problems. This tile aggregates data and presents a clear overview of the current health status of the databases in the environment, indicating how many are experiencing issues.

In contrast, the other tiles serve different purposes: the HTTP monitor typically focuses on web service performance and response times; the data center service health tile provides an overview of the health of services within a data center rather than specific databases; while Smartscape visualizes how different components in the application architecture interact, presenting a holistic view of relationships rather than specific metrics on database health. Therefore, the Database health tile is the appropriate choice for tracking the number of databases affected by problems.