<div class="wiki-content maincontent"><p>Questions relating to long term persistence of messages.</p>

<ul class="childpages-macro"><li><a shape="rect" href="are-messages-read-directly-from-the-journal.xml">Are messages read directly from the journal</a></li><li><a shape="rect" href="does-activemq-support-my-sql-database.xml">Does ActiveMQ support my SQL database</a></li><li><a shape="rect" href="how-does-journaling-work-with-multiple-brokers.xml">How does journaling work with multiple brokers</a></li><li><a shape="rect" href="how-does-the-journal-work.xml">How does the journal work</a></li><li><a shape="rect" href="how-do-i-back-up-kahadb.xml">How do I back-up KahaDB</a></li><li><a shape="rect" href="how-do-i-change-the-message-store-directory-for-an-embedded-broker.xml">How do I change the message store directory for an embedded broker</a></li><li><a shape="rect" href="is-there-a-specified-size-of-the-journal.xml">Is there a specified size of the journal</a></li><li><a shape="rect" href="what-happens-when-the-journal-size-is-exceeded.xml">What happens when the journal size is exceeded</a></li><li><a shape="rect" href="what-is-the-difference-between-persistent-and-non-persistent-delivery.xml">What is the difference between persistent and non-persistent delivery</a></li></ul></div>