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From aphor <>
Subject How to avoid Duplicate delivery and Unmatched acknowledge when failover
Date Thu, 23 Feb 2017 06:57:29 GMT
Hi All,

I'm using activemq-5.14.3, embeded in JBOSS EAP 6.4. it's master-slave(share
database) mode. consumer is Message driven bean(MDB) and transaction is XA 

I got follow two exceptions from log when he comsumer is processing message,
broker failover occur.
1 java.lang.Throwable: Duplicate delivery to ActiveMQSession (cause message
is sent to DLQ)
2 javax.jms.JMSException: Unmatched acknowledge, (the ack is from current

Is there a way to avoid it?  thanks


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