When selected, this setting has different effects depending on the scope of the data page:
Requestor scope – The data page instance that is created when any thread refers to the data page is removed when there are no more threads referring to it.
Node scope – The system checks the Reload if older than fields on the Load Management tab of the data page rule. If the fields are blank, the system uses the value of the dynamic system setting DeclarePages/DefaultIdleTimeSeconds, which is set by default to 86400 seconds, or one day.
Note: Read-only data pages are never passivated. If a requestor or thread is idle and gets passivated, all read-only data pages in that requestor or thread are cleared and reloaded the next time they are referenced, whether or not Clear pages after non-use is selected.