Instance administrators having the APEX Administrator role can set session Timeout for an instance on the Instance Settings, Security page.
3 types of session timeout attributes can be managed by an Oracle APEX Administrator.
Maximum Session Length in Seconds – Default value : 28800 seconds(8 hours) Maximum Session Idle Time in Seconds – Default value : 3600 seconds (1 hour) Session Timeout Warning in Seconds – Default value : 180 seconds (3 minutes)
To configure Session Timeout attributes for an APEX instance:
Sign in to Oracle Application Express Administration Services.
Click Manage Instance.
Under Instance Settings, click Security.
Here change the attributes as per your requirement.