historical count of user sessions connected
For Oracle 11.x, is there a way to look at how many sessions were connected at some time in the past (e.g., a week ago, or every Sunday at 3:00pm for past 6 weeks, etc.).
I want to know how many sessions were connected, verses how many session were active.
It seems this information should be located somewhere, but where?
I looked at v$active_session_history, but I really don't know what I'm looking at there, and also, it doesn't show inactive connections.