IBM BPM, V8.0.1, All platforms > Troubleshooting and support > Troubleshooting administration tasks and tools > Troubleshooting Common Event Infrastructure > Problems when receiving or querying events

Events not being received by consumers (no error message)

My event source application is successfully submitting events to the emitter, but the events are not received by consumers using the JMS interface.

Cause

This problem can be caused be any of the following conditions:

• Event distribution is not enabled for the event service.

• The events are being filtered out by the emitter.

• The events are being filtered out by the notification helper.

• The event consumer is not specifying the correct event group.

• The JMS connection is not started.

Remedy

The remedy for this problem depends upon the underlying cause.

• 
  To verify that event distribution is enabled for the event service:

  1. In the administrative console, click Service integration > Common Event Infrastructure > Event service > Event services > event_service.

  2. If the Enable event distribution property is not selected, select the check box.

  3. Click OK to save any changes.

• 
  To check the event filter settings for the emitter:

  1. In the administrative console, click Service integration > Common Event Infrastructure > Event emitter factories > emitter_factory > Event filter. (Make sure you are viewing the settings for the emitter factory your event source application is using.)
  2. Check to see whether the filter configuration string excludes the events you are trying to send to consumers. If so, you can either modify the filter configuration string or modify the event data so the events are not filtered out.

  3. Click OK to save any changes.

• 
  To check the event filter settings for the notification helper:

  1. Check your event consumer application to see if an event selector is specified for the notification helper using the NotificationHelper.setEventSelector method.

  2. If an event selector is specified, make sure it does not exclude the event you are trying to receive. (A null event selector passes all events.)

• 
  To check the event group specified by the event consumer:

  1. In the administrative console, click Service integration > Common Event Infrastructure > Event service > Event services > event_service > Event groups. The table shows a list of all event groups defined for the event service.

  2. Select the event group your event consumer subscribes to.

  3. Find the Event selector string property.
  4. Make sure the specified event selector matches the content of the event you are trying to receive. If it does not match, you might want to make one of the following changes:
     • Modify the event selector so the event is included in the event group.
     • Modify the event data so the event matches the event group.
     • Modify your event consumer to subscribe to a different event group that includes the event.

• To start the JMS connection:

  In your event consumer, use the QueueConnection.start() method or the TopicConnection.start() method before attempting to receive events.

Problems when receiving or querying events