Deleting a publish/subscribe broker profile

This describes how you delete a broker profile and all topic mappings on a WebSphere® MQ link, which forms a publish/subscribe bridge between WebSphere Application Server and a WebSphere MQ network.

Before you begin

Before you start you need to:

Deleting a broker profile is a three-stage operation to ensure both the WebSphere Application Server and the WebSphere MQ network and its message brokers are synchronized after the deletion:

About this task

To delete a broker profile, use the administrative console to complete the following steps:

Procedure

  1. In the navigation pane, click Service integration > Buses > [Content Pane] bus_name > [Topology] Messaging engines > engine_name > [Additional Properties] WebSphere MQ links > [Content Pane] link_name > [Additional Properties] Publish/subscribe broker profiles > [Content Pane] profile_name.
  2. Remove the subscriptions:
    1. Click the Runtime tab.
    2. Click Subscriptions.
    3. Click Unsubscribe to remove all the subscriptions listed. When an unsubscribe command is sent to the message broker in the WebSphere MQ network, the relevant topic mapping is put into an "in doubt" state until the unsubscribe is confirmed when the topic mapping is deleted. Once the unsubscribe is confirmed the topic mapping is no longer shown in the runtime view. You may need to refresh the runtime view for all subscriptions to be shown as removed.
  3. To delete the broker profile, return to the Publish/subscribe broker profiles page.
  4. Select the check box next to the broker profile you wish to delete.
  5. Click Delete.
  6. Save your changes to the master configuration.
  7. If you plan to delete the WebSphere MQ link do so now.
  8. Restart the application server.

What to do next

If, having unsubscribed the topic mappings on the broker profile, you do not delete the broker profile on the associated WebSphere MQ link, then the subscriptions will be recreated when the server is restarted (because they are still present in the static configuration information for the WebSphere MQ link). These subscriptions are unrelated to the original subscriptions and this may lead to some messages in a publication flow being missing for subscribers on the target side of the bridge. For example, any messages published on an unsubscribed topic between the time the unsubscribe took place and the application server was restarted will not be republished to the target side of the WebSphere MQ link.




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Last updated: Aug 29, 2010 8:25:23 PM CDT
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