When you add (scale out) or remove (scale in) nodes, you must reconfigure the JMS transport URIs in Oracle Service Bus.
jms://cluster_address/connection_factory/UDQ
The invocation resulted in an error: [JMSPool:169803]JNDI lookup of the JMS connection factory weblogic.jms.ConnectionFactory failed: javax.naming.ServiceUnavailableException: slc07pjl-soaqa-2vm-otd-0616-osb-jcs-wls-2 [Root exception is java.net.UnknownHostException: slc07pjl-soaqa-2vm-otd-0616-osb-jcs-wls-2].