Every time your start the app server it will overwrite the log file. You can change this in server/xxx/conf/jboss-log4j.xml. Check the Log4J docs for what options are available. You can change the Append parameter to tru: <appender name="FILE" class="org.jboss.logging.appender.DailyRollingFileAppender"> | . . . | <param name="Append" value="true"/> | . . . View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4247118#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...