Create uniform distributed topics

When configuring uniform distributed topics, WebLogic Server uniformly creates the necessary members on the JMS servers to which a JMS module is targeted. This ensures the consistent configuration of all distributed destination parameters, particularly in regards to weighting, security, persistence, paging, and quotas.

The legacy weighted distributed topic feature is still available for users who prefer to manually fine-tune distributed topic members. However, BEA strongly recommends configuring uniform distributed topics to ensure the consistent configuration and deployment of topic members across a cluster. For more information on creating a weighted distributed topic, see Create weighted distributed topics.

To create a uniform distributed topic:

If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
In the Administration Console, expand Services > Messaging and select JMS Modules.
In the JMS Modules table, click the name of JMS module in which to configure the topic resource.
On the module's Settings page, click the New button in the Summary of Resources table.
On the Create a New JMS System Module Resource page, use the Type drop-down to select Distributed Topic.
Click Next.
On the Distributed Topic Properties page:
1. In Name, enter a name for the uniform distributed topic.
2. In JNDI Name, enter the JNDI name used to look up the uniform distributed topic within the JNDI namespace. Applications use the JNDI Name to look up the distributed topic.
  Note: A distributed topic that does not have a JNDI Name can be referenced by passing the Name of the distributed topic to javax.jms.TopicSession.createTopic().
3. In Load Balancing Policy, specify a policy (Round Robin or Random) for how messages are distributed to the members of this uniform distributed topic.
4. Leave the Allocate Members Uniformly check box enabled in order for WebLogic Server to uniformly create and allocate the members of this uniform distributed topic.
  Note: Once you create a uniform distributed topic, you cannot rename it. Instead, you must delete it and create another one that uses the new name.
Click Next.
On the targeting page:
1. In Subdeployments, select a subdeployment for the uniform distributed topic. If necessary, you can create a new subdeployment by clicking the Create a New Subdeployment button. A subdeployment is a mechanism by which JMS module resources (such as queues, topics, and connection factories) are grouped and targeted to a server resource (such as JMS servers, server instances, or cluster).
  When a SubDeployment is selected, its targeted JMS server, server, or cluster appear as selected in the Targets box.
2. If you are not using subdeployments, in the Targets box, select the JMS server, server, or cluster on which to deploy the uniform distributed topic.
You can also reconfigure deployment targets later if you wish. For more information about targeting uniform distributed topics, refer to Uniform distributed topics - configure targets.
Click Finish.
The new uniform distributed topic is added to the module's Summary of Resources table.
To activate these changes, in the Change Center of the Administration Console, click Activate Changes.
Not all changes take effect immediately—some require a restart (see Use the Change Center).

After you finish

If you want to configure additional parameters for a new uniform distributed topic, including general properties, thresholds and quotas, producer overrides, logging, message delivery failure, and multicast properties, see Configure uniform distributed topics.