11 Using Timers

You can use timers within all types of EJBs—except stateful session beans. The EJB can set up a timer where OC4J calls the bean either at a specified time, after a specified elapsed time, or at specified intervals. These timers are for use in modeling of application-level processes, not for real-time events.

The following sections describe how to use timers:

• How to Create Timers

• Configuring Regularly Scheduled Timers (Cron Timers)

• How to Retrieve Information About the Timer

• Executing the Timer Within the Scope of a Transaction

• What Does a NoSuchObjectLocalException Mean with Timers?