The Activity tab sits beside the Development tab in the Catalog Navigator. This tab is mostly useful for system administrators, allowing them to track what is happening in a running s-Server. For a SQLstream s-Server instance, you can view information on current sessions, statements, object locks, stream graphs, and stream operators.
Note: Stream-graphs represent one SQL statement running in s-Server, usually either a SELECT or INSERT.
You can also filter those views to see, for example, only statements associated with a particular session, which can be helpful when developing an application.