Session recycle bug in org.jboss.jms.asf.StdServerSession --------------------------------------------------------- Key: JBAS-3091 URL: http://jira.jboss.com/jira/browse/JBAS-3091 Project: JBoss Application Server Issue Type: Feature Request Security Level: Public(Everyone can see) Components: JMS service Affects Versions: JBossAS-4.0.3 SP1 Reporter: Roland R?z Fix For: JBossAS-4.0.6.CR1 If a JMS provider throws an unchecked Exception out of Session.run(), the method org.jboss.jms.asf.StdServerSession.run() does recycled the Session without making a rollback on the Session before. If the next message on this recycled Session will be commited the older Message which has been already consumed from the Messaging System before when throwing the Exception will be lost. Because of the Exception this older Message has neither been rollbacked nor committed before. To avoid this problem a Session.rollback() needs to be called before recycling it in case of any unchecked Exception. (See code snippet below!) Possible Fix: public void run() { boolean trace = log.isTraceEnabled(); if (trace) log.trace("running..."); try { if (xaSession != null) xaSession.run(); else session.run(); } // To avoid loosing Messages rollback the Session in case of any Exception from the JMS provider catch (Throwable e) { log.error("Exception occured during the Session.run(). Call Session.rollback() before recycling it.", e); try { if (xaSession != null) xaSession.rollback(); else session.rollback(); } catch (JMSException ex) { log.error("Exception occured when calling Session.rollback()", e); } } finally { if (trace) log.trace("recycling..."); recycle(); if (trace) log.trace("finished run"); } }