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From "Timothy Bish (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQCPP-256) Transaction has not been started exceptions on the broker with parallel transacted sessions
Date Tue, 21 Jul 2009 22:08:33 GMT

    [ https://issues.apache.org/activemq/browse/AMQCPP-256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=52888#action_52888
] 

Timothy Bish commented on AMQCPP-256:
-------------------------------------

A test would definitely help to understand exactly what you are doing when the error occurs.
 

Are you using the default openwire wire format or are you using stomp?  
Have you tried the same code using the latest ActiveMQ 5.3 SNAPSHOT?


> Transaction has not been started exceptions on the broker with parallel transacted sessions
> -------------------------------------------------------------------------------------------
>
>                 Key: AMQCPP-256
>                 URL: https://issues.apache.org/activemq/browse/AMQCPP-256
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>    Affects Versions: 3.0
>         Environment: Ubuntu Jaunty 9.04
>            Reporter: Teemu Torma
>            Assignee: Timothy Bish
>            Priority: Critical
>
> When using parallel transacted sessions and consumers to same queue each sharing the
same connection, the messages are delivered but the broker 5.2 gets exceptions
> javax.jms.JMSException: Transaction 'TX:de411476-d65d-fff7-1e84-be7c9abd80b5:6' has not
been started.
> and some messages are left on the broker even though they were delivered.
> The issue seems to be related to multi-threading, by protecting each receive/commit with
a lock the error does not happen.  I am sorry I don't have a test program ready, but it should
be easy to reproduce by creating multiple transacted session threads with prefetchSize=1 and
consuming messages, commiting after each message.  I have seen this happen both with consumers
and listeners.

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