Configuring JMS Resources for Clustering and High Availability - Oracle WebLogic Server 12c Advanced Administration - page 139

How it works...
The Consensus option is the migration basis configured for the PROD_Cluster
cluster. It requires the Node Manager to be running, to keep the leasing information
updated in the memory.
The new persistent store, FileStoreMigratable , and the new JMS server,
JMSServerMigratable , were created and targeted to the migratable target, PROD_Server01
(migratable) , which was configured to use Auto-Migrate Exactly-Once Services as
the migration policy. One migratable target from a Managed Server must be elected to be the
primary host of the service.
A JMS module, JMSAppModulePinned , was created with a new subdeployment,
JMSAppSubPinned , targeting JMSServerMigratable . The queue JMSAppPinnedQueue
was created and uses the JMSAppSubPinned subdeployment.
This configuration guarantees JMSAppPinnedQueue is always running in at least one
Managed Server of the cluster, giving preference to run at the PROD_Server01 server.
If PROD_Server01 goes down or crashes, the queue is automatically migrated to another
running instance with no intervention.
Remember that the file store must reside in a shared
storage so that all machines of the cluster can access it.
See also
F Creating the distributed queue destination and the connection factory
Configuring messaging bridge with
source and target distributed destinations
The messaging bridge is used to forward JMS messages from one source queue to another
target queue.
In this recipe, a bridge will be created to forward the JMS messages from the JMSAppQueue
distributed queue to a hypothetic distributed queue with a JNDI name jms.remotequeue ,
hosted by a separate WebLogic domain named REMOTE_DOMAIN . The REMOTE_DOMAIN
domain is configured with a cluster with two Managed Servers instances running at the
addresses t3://remote01.domain.local:9001 and t3://remote02.domain.
local:9002 . A remote connection factory is available under the JNDI name jms.
remoteappcf . Both local and remote queues are distributed destinations.