You can Query from following views to know what auditing is enable on your system
In 11g there is option like audit/noaudit command to run after setting the parameter values.
For more detail you can also check the doc:Verifying Security Access with Auditing
thanks for your response Dk
but in those views I cannot view anything about AUDIT SESSIONS in the database.
The link describes those views as:
Describes current system privileges being audited across the system and by user
Describes current statement auditing options across the system and by user
and when I query to those views they show me object privileges.
Exists another view to see records for audit session option?