If a user browses a queue with large messages in hawtio, an OOM condition can result. For instance, if a queue contains 1000 * 10mb messages and the following definition:

<policyEntry queue="FOO" memoryLimit="2MB" producerFlowControl="false"/>

An exception will occur when browsing the queue in hawtio, shutting down AMQ. Setting the maxBrowsePageSize mitigates the issue, but then the user is only allowed to see a small subset of messages in the queue via the browse operation.