I'm using 5.8.0 Mark On 5/13/2013 8:29 PM, ceposta [via ActiveMQ] wrote: No, it's probably the same cost. But the cost is in establishing the underlying connection, not in creating the session. It just happens that if you haven't started the connection by the time you try to create the session, creating the session will set up the underlying connection data structures before creating a session. Which would explain what you were seeing. I would also be curious to understand why starting the connection before creating the session would get messages delivered. What version are you using?
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