Composite sensors provide a method for implementing trackable fields on messages. Composite sensors enable you to perform the following tasks:

• Monitor incoming and outgoing messages.

• Specify composite sensor details in the search utility of the Flow Instances pages for the SOA Infrastructure, partition, and SOA composite application in Oracle Enterprise Manager Fusion Middleware Control. This action enables you to display details about a particular instance with a composite sensor.

• Publish JMS data computed from incoming and outgoing messages.

• Track composite instances initiated through business event subscriptions.

You define composite sensors on service and reference binding components or on service components that have business event subscriptions in Oracle JDeveloper. This functionality is similar to variable sensors in BPEL processes. During runtime, composite sensor data is persisted in the database.

You can also define composite sensors during runtime in Oracle SOA Composer. Oracle SOA Composer changes are picked up immediately by the runtime, whereas changes made using Oracle JDeveloper require SOA composite application redeployment.

For information about searching for composite sensors in Oracle Enterprise Manager Fusion Middleware Control, see Section "Tracking Business Flow Instances at the SOA Infrastructure or Partition Level" of Administering Oracle SOA Suite and Oracle Business Process Management Suite.