This subsection describes how to save and manage the objects that exists for a fixed time period, in the Explicit heap by changing Java programs and not by performing tuning. The Explicit heap is an area for which a garbage collection is not executed. You can use Explicit heap to prevent the movement of objects to the Tenured area and minimize the occurrence of a full garbage collection. You can also use automatic allocation setup file to allocate the object directly in Explicit heap. For details, see 7.10 Explicit heap tuning. On Application Server, the objects related to HTTP session are managed by Explicit heap.