n is either 1 or 0. The default value is 0.
When JournalcspSession is enabled (n = 1), InterSystems IRIS® data platform journals the %cspSession global. Enable this setting if you want the web session global to be replicated onto another machine for failover or if you want a web session to survive an InterSystems IRIS restart. Otherwise, the %cspSession global is mapped to IRISTEMP and not journaled. InterSystems IRIS kills the %cspSession global on system restart or upgrade to a new InterSystems IRIS software version, so that any record of ongoing web sessions is removed.
Changing This Parameter
On the Journal Settings page of the Management Portal (System Administration > Configuration > System Configuration > Journal Settings), select Journal Web session to enable this setting.
Instead of using the Management Portal, you can change JournalcspSession in the Config.Journal class (as described in the class reference) or by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).