<div class="wiki-content maincontent"><h2 id="HowcanIenabledetailedlogging-HowcanIenabledetailedlogging">How can I enable detailed logging</h2>

<p>We use <a shape="rect" class="unresolved" href="#">slf4j</a> which allows the underlying logging implementation to be statically bound at startup.<br clear="none">
By default we ship with log4j but feel free to make your own choice.</p>

<p>If you've got log4j.jar on your classpath you can use a log4j.properties file to configure the logging levels. See the <a shape="rect" class="external-link" href="http://svn.apache.org/repos/asf/activemq/trunk/activemq-core/src/test/resources/log4j.properties">log4j.properties example</a> for the kind of thing you'll need.</p>

<p>e.g. adding the following to your log4j.properties will enable tracing of ActiveMQ code:</p>

<p>in 4.x</p>

<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
<script class="brush: java; gutter: false; theme: Default" type="syntaxhighlighter"><![CDATA[
log4j.logger.org.apache.activemq=INFO
log4j.logger.org.apache.activemq.spring=WARN
]]></script>
</div></div>

<p>in 3.x</p>

<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
<script class="brush: java; gutter: false; theme: Default" type="syntaxhighlighter"><![CDATA[
log4j.logger.org.activemq=TRACE
]]></script>
</div></div>

<h3 id="HowcanIenabledetailedlogging-Gettinghelponlog4j">Getting help on log4j</h3>

<p>If you are new to log4j please see the <a shape="rect" class="external-link" href="http://logging.apache.org/log4j/docs/manual.html">log4j manual</a></p></div>