I'd like to know what is the consequence of disabling ValidationPeriod on a Realm configured for persistent session ?
According to documentation, if you disable the Validation Period, theWeb Agent will always try to validate the session from its cache andonly call Policy Server if the session is not available in its cache.
On one hand, this should result in less calls to Policy Server andSession Store. On the other hand, this might lead to the fact that theWeb Agent still validate the session, even if the session doesn'texist anymore in the Session Store.
Realm Dialog Reference
Be aware of the following:
For persistent sessions, the Idle Timeout must be enabled and setto a value higher than that specified for the Validation Period.
If enabled, determines the period that the Agent caches the resultof a session validation call to the Policy Server. Sessionvalidation calls perform two functions: informing the PolicyServer that a user is still active and checking that the usersession is still valid. Session validation calls inform the PolicyServer that a user is active and confirm that the user session isvalid. If disabled, the agent always tries to validate the sessionfrom its cache and only calls the Policy Server if the session isnot available in its cache.
To specify the validation period, enter values in the Hours,Minutes, and Seconds fields. If you are configuring the system toprovide a Windows user security context, set this value high, forexample, 15-30 minutes.
Note: The Validation Period value must be greater than zero.
Important! The session validation period must be less than the
specified Idle Timeout value.
KB : KB000132523