Hmm, it sounds odd that there's an error indicating the value needs to be set. The TCP transport sets defaults if they are not provided.
Can you provide the text of that error message? The URL looks right. However, there is some magic to the linkage of the wireformat that makes it hard to be 100% sure. OpenWire is being used here, correct? Are the stock ActiveMQ libraries in-use? One thing to try -- setup the JMS log4j appender with a minimal ActiveMQ client and see if the problem still exists. -- View this message in context: http://activemq.2283324.n4.nabble.com/log4j-JMS-appender-exception-tp4684090p4684167.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.