Use this task when you are implementing Enterprise JavaBeans (EJB) applications
that use timers.
About this task
In WebSphere® Application
Server, the EJB Timer Service implements EJB Timers as a new Scheduler
Service task. By default, an internal (or pre-configured) scheduler
instance is used to manage those tasks, and they are persisted to
an Apache Derby database associated with the server process. Creation
and cancellation of Timer objects are transactional and persistent.
That is, if a Timer object is created within a transaction and that
transaction is later rolled back, the Timer object's creation is rolled
back as well. Similar rules apply to the cancellation of a Timer object.
Timer objects also survive across application server shutdowns and
restarts. You can also configure and manage the EJB timer service
for a specific EJB container