Hi I think I figure out the problem.
Here is the scenario, 1 Start producers and consumers in server 1. 2 Send requests to first server, everything will be processed. 3 Start producers and consumers in server 2. 4 Send requests to first server, everything will be processed. But if we send requests to second server,the message is processed at CAMEL_ONE_QUEUE and reply is kept on CAMEL_ONE_QUEUE_REP As first server's consumers are also listening to same reply queue, it's processed by that consumers and it is ignoring with invalid correlation id. Here is the log message : WARN 06 Aug 2013 17:47:58,428 org.apache.camel.component.jms.reply.PersistentQueueReplyManager - Reply received for unknown correlationID [Camel-ID-fsschnd12298-2458-1375791411312-0-3]. The message will be ignored: ActiveMQTextMessage {commandId = 167006, responseRequired = false, messageId = ID:FSSCHN61-39193-1375789791590-1:3:93:1:1, originalDestination = null, originalTransactionId = null, producerId = ID:FSSCHN61-39193-1375789791590-1:3:93:1, destination = queue://CAMEL_ONE_QUEUE_REP, transactionId = null, expiration = 0, timestamp = 1375791482060, arrival = 0, brokerInTime = 1375791482061, brokerOutTime = 1375791482061, correlationId = Camel-ID-fsschnd12298-2458-1375791411312-0-3, replyTo = queue://CAMEL_ONE_QUEUE_REP, persistent = true, type = null, priority = 4, groupID = null, groupSequence = 0, targetConsumerId = null, compressed = false, userID = null, content = null, marshalledProperties = org.apache.activemq.util.ByteSequence@783d783d, dataStructure = null, redeliveryCounter = 0, size = 0, properties = {CamelJmsDeliveryMode=2, breadcrumbId=ID-fsschnd12298-2458-1375791411312-0-1}, readOnlyProperties = true, readOnlyBody = true, droppable = false, text = C1123454712345678901210000000201234} Do we have to set prefetch for reply queue also ? If yes how can we set ? ----- Regards kiran Reddy -- View this message in context: http://camel.465427.n5.nabble.com/camel-Activemq-strange-behaviour-tp5736812p5736846.html Sent from the Camel - Users mailing list archive at Nabble.com.