For this recipe, we will use the composition defined in the Defining composite sensors and Adding a composite sensor recipes.

First, you will have to initiate the BPEL process:

By selecting the Sensor Values tab, you will notice that the fault sensor was fired. By checking the details of the fault sensor, you can see that, the problem occurred because of the dates. If we also had the Oracle BAM server instance running, you could configure the composite sensors to provide data for BAM. This will enable us to monitor the BPEL process through a BAM solution.

The sensors are evaluated as the composite is executed. The value of the sensor depends on the criteria we set as the condition. You can monitor the input or output messages on the composite. Furthermore, you can monitor variables, activities, or faults in the BPEL processes. Depending on what sensor action you define, the evaluated values of sensors can be sent to different locations (please read the Sensor action section in the Defining composite sensors recipe).

The evaluated values of composite sensors that have the database sensor action defined are stored into the database. The name of the table is COMPOSITE_SENSOR_VALUE and it is defined in the DEV_SOAINFRA schema. We can query the sensor values by composite_instance_id or by the sensor name:

select * from DEV_SOAINFRA.COMPOSITE_SENSOR_VALUE where SENSOR_NAME = 'HotelSensor';