Idle session

hello, what is the different between idle session and active session in oracle?
is idle session is treated as an 1 user who is currently connected? or user who is not connected to the db.
because on my session monitor, there's a lot of idle

HI,
idle session
User connected to database but doing nothing then there session is called idle session.
You can limit the idle time for a session. If the time between Oracle calls for a session reaches the idle time limit, then the current transaction is rolled back, the session is aborted, and the resources of the session are returned to the system. The next call receives an error that indicates the user is no longer connected to the instance. This limit is set as a number of elapsed minutes.
active session
user connected to database and doing there session is active.
active and inactive session
A session is ACTIVE when it is making a SQL call to Oracle Database. A session is INACTIVE if it is not making a SQL call to the database.

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