How many consumers do you have active? (See JMX). See these FAQ entries... http://activemq.apache.org/i-do-not-receive-messages-in-my-second-consumer.html http://activemq.apache.org/what-is-the-prefetch-limit-for.html
2008/7/11 Yohan Liyanage <[EMAIL PROTECTED]>: > > Hi, > > I tried to use JmsTemplate's receive() method for synchronous consumption of > a Queue, but the method returns 'null', even when there are messages in the > queue. > > The JmsTemplate (with a time out of two seconds) successfully receives first > messages, but after a while, it is not able to consume messages from the > queue, and returns null (timeout), even when there are messages in the Queue > (I checked through JMX). > > Then I tried using RECEIVE_TIMEOUT_INDEFINITE_WAIT, and with that, I was > able to consume about 7,8 messages (out of 50) and again, it fails returning > null. Then I tried out with NO_WAIT and this time, I was only able to > consume first message. It fails returning nulls. > > I tried this with CachingConnectionFactory / SingleConnectionFactory and > also with direct ActiveMQ ConnectionFactory. But the result is same. The > application consumes several messages, and then starts to return null, while > there are messages left in queue. > > I am using Spring 2.5.5 with ActiveMQ 5.1. > > Any suggestions are deeply appreciated. > > Thanks > > PS: I tried this with asynchronous message consumption using MessageListener > and DefaultMessageListenerContainer, and it works as expected without this > issue. > -- > View this message in context: > http://www.nabble.com/Spring-JmsTemplate-receive%28%29-returns-null-with-messages-in-Queue-tp18402053p18402053.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > > -- James ------- http://macstrac.blogspot.com/ Open Source Integration http://fusesource.com/
