thanks for all the help, but i am not able to get this working correctly. The code is like this: public void start(){ try{ ConnectionFactory factory = getTemplate().getConnectionFactory(); con = factory.createConnection(); con.start(); session =con.createSession(false,Session.AUTO_ACKNOWLEDGE); MessageConsumer consumer = session.createConsumer(getTemplate().getDefaultDestination()); while(true){ Message m = consumer.receive(); handleMessage(m); } } catch(JMSException jms){ jms.printStackTrace(); } } Could there be anything i am missing? I have also tried to run with session_createConsumer(true,Session.SESSION_TRANSACTED). In my method handleMessage i then tried to do session.comit(), but still no resolution to this problem. On Mon, Dec 1, 2008 at 4:59 PM, James Strachan wrote: > 2008/12/1 Lars Eirik Rønning : > > hm, I think i only run session.comit(). > > If you are using transacted sessions then use the SESSION_TRANSACTED > ack mode rather than CLIENT_ACKNOWLEDGED > > > > What is the method i need to run to acknowledge().. > > > > On Mon, Dec 1, 2008 at 4:36 PM, Gabe Westmaas > > wrote: > > > >> And does your client acknowledge after it receives it? If not, it will > >> read the message again later since the broker thinks it wasn't received. > >> > >> -----Original Message----- > >> From: "Lars Eirik Rønning" > >> Sent: Monday, December 1, 2008 10:05am > >> To: users@activemq.apache.org > >> Subject: Re: Message is sendt more than once > >> > >> Hi i am using the following :session > >> =con.createSession(true,Session.CLIENT_ACKNOWLEDGE); > >> > >> On Mon, Dec 1, 2008 at 2:42 PM, Gabe Westmaas > >> wrote: > >> > >> > Could be an acknowledgment issue, what type of acknowledge (client, > auto, > >> > dups ok, transaction) are you using? > >> > > >> > -----Original Message----- > >> > From: "Lars Eirik Rønning" > >> > Sent: Monday, December 1, 2008 8:16am > >> > To: users@activemq.apache.org > >> > Subject: Message is sendt more than once > >> > > >> > Hi. > >> > I have some business logic which process xml from a que served by > >> activemq. > >> > I use receive() to get the xml from the que. > >> > When i run my business logic without the que only one instance of the > xml > >> > is > >> > receveived, where as when asking to get messages from the que it sends > >> the > >> > same message twice. > >> > at the moment i have set prefect to 1 so only one message should > arrive > >> at > >> > a > >> > time. This is done via spring. > >> > > >> > The weird thing is that when i stop my consumer and watch the > webconsole > >> > with the que it says only 1 message is wating to be delivered.When i > >> > activate my consumer , the xml is sendt twice.. > >> > > >> > Hope you can help me with this. > >> > I run activemq 5.1.0 > >> > > >> > > >> > > >> > >> > >> > > > > > > -- > James > ------- > http://macstrac.blogspot.com/ > > Open Source Integration > http://fusesource.com/ >