RE: openjms "receiver hang" problem

Hi,

This problem appears in 0.7.6.1 and 0.7.7.alpha using tcp with SQLServer as
database.
Till recently I thought my application was wrong but after changing OS from
Windows2000 to WindowsXP, the problem occurs less frequently.

Setup of my application:
Every client listens to a subject [server] and publishes messages
[subject=client] to the server.  The server listens to a subject [client]
and publishes messages to the clients [subject= server].  I have implemented
a heartbeat mechanism where all application sends a message to himself and
to the server/client [subject=server & client].  After almost two days I
notice that all messages are sending but none of them are delivered.  
To make my application working again, I need to close all connections and
make new connection and sometimes a reboot of the openjms server is required
as well.


-----Original Message-----
From: openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
[mailto:openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of Felipe Palma
Dias
Sent: 05 October 2005 16:03
To: [email protected]
Subject: Re: [openjms-user] openjms "receiver hang" problem

I am with the same problem. 

My code:

connection = getTopicConnection();
session = connection.createTopicSession(false,
Session.CLIENT_ACKNOWLEDGE); // never returned
Topic topic =
(Topic)getContext().lookup(SessionContext.getSession().getTopic());
subscriber = session.createDurableSubscriber(topic,
"xxxx"); 

I am using 0.7.6.1 and rmi connection.

--- Laszlo Schaffer personal
<[email protected]> escreveu:

> Hello
> 
>  
> 
> I found the following problem (with openjms 0.7.6) 
> 
> A server application (ChatServer) runs on a linux
> server. There are four
> queue that are used (two for client communikation
> send,receive). 
> 
> Client app connect to the server with tcps . The
> system runs well but after
> some days if a network error occure (sometimes the
> connection has broken)
> however the clients can establish the connection
> itself the client program
> wait forever in this call (in bold)
> 
>  
> 
>    session = queueConnection.createQueueSession( 
> 
>         false, Session.CLIENT_ACKNOWLEDGE);   // ok
> returned
> 
>    destination = (javax.jms.Queue)
> context.lookup(destinationName);  // ok
> returned
> 
>    receiver = ( (QueueSession)
> session).createReceiver( (javax.jms.Queue)
> destination, selector);   // never returned
> 
>  
> 
> (However there is another server app that runs on
> the same linux machine and
> communicate with the chatserver throug jms without
> problem but the clients
> cannot. it seems there is (memory?) problem with
> just this queue/thread?)
> 
>  
> 
>  
> 
> At first the it was set to use PERSISTENT messages.
> The problem occurs after
> approx every day. Then I increased the heap size of
> the jms server and
> changed the type of messages to NON_PERSISTENT, now
> it has worked fine
> approx 4days after that it come this problem again..
> (Now I am set the
> GarbageCollectorConfig. in the jms config but I am
> not sure this is a real
> solution)
> 
>  
> 
> Any idee?
> 
> saf
> 
> 


Felipe F. Palma Dias - São Paulo/SP
http://www.palmadias.com.br
MSN: palmadias-/E1597aS9LRfJ/[email protected]
Yahoo: palmadias
Mobile: +55 11 99157578


	



	
		
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