A city-council meeting chat pipeline creates a new OCI Streaming stream for live reactions. Operators need the valid retention window, the default, and whether retention can be changed later. Which statement is correct?
Select an answer to reveal the explanation.
Short Explanation
Think of retention as a whiteboard the facilities crew erases on a schedule you pick only when the board is installed—24 to 168 hours, default one day, and you cannot repaint the schedule afterward. After the window, messages are gone whether or not anyone read them. Longer hold or consume-and-delete semantics need another service or a Connector Hub sink—not a hidden Streaming flag.
Full Explanation
When you create an OCI Streaming stream, retention must be between 24 and 168 hours (seven days), with a default of 24 hours. Retention cannot be changed after the stream is created. Once the window elapses, messages are removed regardless of whether consumers read them. Longer retention or delete-on-consume semantics require a different approach (another service or a Connector Hub sink), not an undocumented Streaming option.