"Unresponsive EPR: JMSEpr" error when the load is high - Red Hat Customer Portal

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Issue

We defined an ESB service with a jms-listener. It works fine when just invoked once.
But during load tests where a high number of messages are sent to the server, the following error prompts after just a few seconds:

      13:35:37,827 INFO  [ServiceInvoker] Unresponsive EPR: JMSEpr [ PortReference...  ]

We have already increased the JMS connection pool to 100 in $SOA_HOME/jboss-as/server/$CONFIG/deployers/esb.deployer/jbossesb-properties.xml as follows, but it does not seem to help:

      <property name="org.jboss.soa.esb.jms.connectionPool" value="100"/>

What needs to be done to configure SOA-P to handle a higher load?

Environment

Red Hat JBoss SOA Platform (SOA-P)
- 5.x

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