Robin Kåveland Hansen created AMQ-3966:
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Summary: Messages get stuck in queue
Key: AMQ-3966
URL: https://issues.apache.org/jira/browse/AMQ-3966
Project: ActiveMQ
Issue Type: Bug
Components: Broker
Affects Versions: 5.6.0, 5.5.1, 5.5.0
Environment: java version "1.6.0_32"
Java(TM) SE Runtime Environment (build 1.6.0_32-b05)
Java HotSpot(TM) 64-Bit Server VM (build 20.7-b02, mixed mode)
Linux ****** 2.6.18-308.4.1.el5 #1 SMP Tue Apr 17 17:08:00 EDT 2012 x86_64
x86_64 x86_64 GNU/Linux
CentOS release 5.8 (Final)
Kernel \r on an \m
Reporter: Robin Kåveland Hansen
Priority: Critical
The broker is using the jdbc-persistence-adapter and persists to an oracle
database. We have so far been unable to reproduce this issue reliably, but it
appears both in our testing and production environments with some regularity.
The issue we are having is superficially very similar to [this
description|http://activemq.2283324.n4.nabble.com/Messages-stuck-in-queue-td3244342.html].
Retrieving the queue message count with jmx or inspecting the activemq
database with a `SELECT COUNT(*) FROM ACTIVEMQ_MSGS WHERE CONTAINER LIKE
'%DeadLetterQueue%'` results in a number that is larger than the amount of
messages which can actually be retrieved using a QueueBrowser or a
QueueViewMBean. This difference grows over time, as no messages that are sent
to the queue after this problem occurs are retrievable. We have also observed
this problem happening on queues with normal JMS consumers, where the queue
will grow without the consumer receiving any messages.
A broker restart can sometimes resolve this issue. Our current workaround is to
use a program that fetches the rows for the queue from the database, unmarshals
them and sends them to a temporary queue. The queue with the stuck messages
does not work (does not deliver any messages to consumers or browsers) until
after it has been purged.
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