What is the outcome when the Data Server process fails?

The outcome when the Data Server process fails primarily results in queries running through the Data Server process failing. The Data Server in Tableau is responsible for managing connections and data access, so when this process is not functioning correctly, it directly impacts any ongoing queries that depend on it. This means that any visualizations or calculations relying on data sourced through the Data Server cannot be completed, leading to a failure of those specific operations.

While the Data Server's failure does not cause all processes to terminate, nor does it lead to an automatic restart of Tableau Server, it does affect any views or dashboards that rely on data connections managed by the Data Server. This scenario ensures that users experience issues specifically with data retrieval rather than a complete shutdown of the entire Tableau environment, highlighting the critical role that the Data Server plays in maintaining functionality within Tableau Server.