Network Deployment (Distributed operating systems), v8.0 > Administer applications and their environment > Administer Messaging resources > Manage messaging with the default messaging provider > Interoperating with a WebSphere MQ network > Use WebSphere MQ links to connect a bus to a WebSphere MQ network > Administer an existing WebSphere MQ link
Delete a topic mapping on a WebSphere MQ link publish/subscribe broker profile
This describes how you delete a topic mapping on a broker profile on a WebSphere MQ link, which forms part of a publish/subscribe bridge between WAS and WebSphere MQ. Before you start we have to know the bus name, messaging engine name, WebSphere MQ link name and broker profile name on which you intend to delete the topic mapping.
To delete a topic mapping, use the admin console to complete the following steps.
- If you intend to delete all topic mappings before deleting the broker profile or the WebSphere MQ link, you can avoid restarting the application server more than once by following the steps given in Delete a WebSphere MQ link publish/subscribe broker profile.
- Delete a topic mapping is a two-stage operation to ensure both the WAS (base) and the message brokers in the WebSphere MQ network are synchronized once the deletions have taken place:
- Delete the topic mapping (see below).
- When we have deleted the topic mappings, the changes take effect immediately if we have enabled dynamic configuration updates, otherwise restart the application server.
Procedure
- In the navigation pane, click Service integration -> Buses -> bus_name -> [Topology] Messaging engines -> engine_name -> [Additional properties] WebSphere MQ links -> link_name -> [Additional Properties] Publish/subscribe broker profiles -> profile_name -> [Additional Properties] Topic mappings
- Select the check box next to the topic mapping to delete.
- Click Delete.
- Save your changes to the master configuration.
What to do next
Any topic mappings that we have deleted are automatically cleaned up by the publish/subscribe bridge when the application server is restarted.