What happens if the Data Server process fails?

When the Data Server process fails, it directly impacts the functionality of queries that rely on it. The Data Server is responsible for managing data connections and making data accessible for visualization in Tableau. If this service is not operational, queries that depend on it for data retrieval will not succeed, resulting in failure.

This means that any visualizations or dashboards that require live connections to data sources governed by the Data Server will not display their data properly. Users attempting to interact with such views will likely encounter errors or empty visualizations since the Data Server cannot facilitate the necessary data queries.

By contrast, other options suggest that certain operations or views would continue functioning normally despite the Data Server's failure, which would not be the case. Hence, when the Data Server process is down, the correct understanding is that any queries running through it will fail. This highlights the critical role of the Data Server in ensuring data accessibility for Tableau visualizations.