Introduction: Asynchronous beans



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Asynchronous beans and asynchronous scheduling facilities offer performance enhancements for resource-intensive tasks by enabling single tasks to run as multiple tasks.

Asynchronous beans

An asynchronous bean is a Java object or enterprise bean that can be executed asynchronously by a Java EE application, using the Java EE context of the asynchronous bean creator.

Work objects

A work object is a type of asynchronous bean used by application components to run code in parallel or in a different Java EE context.

Asynchronous scopes

An asynchronous scope (AsynchScope object) is a unit of scoping provided for use with asynchronous beans.


An alarm runs Java EE context-aware code at a given time interval. Alarm objects are fine-grained, nonpersistent, transient, and can fire at millisecond intervals.

Subsystem monitors

A subsystem monitor is an object that monitors the health of a remote system. It uses an event source to inform all registered listeners of the health of the system.

Asynchronous scopes: Dynamic message bean scenario

Java EE now supports message-driven beans, but the beans are static. This scenario provides information about how to set up the environment to enable the dynamic message bean.