According to http://docs.jboss.com/jbpm/v4/devguide/html_single/#d0e2609 anonymous wrote : PVM can use JDK logging (java.util.logging) or log4j. When the first message is logged, PVM logging will make the selection with following procedure: | | 1. If a logging.properties resource is found on the classpath (using the context classloader), then JDK logging will be used and that file will be used to initialize the JDK logging. | 2. If log4j is found on the classpath, then log4j will be used. The check for log4j will be done by checking availability of class org.apache.log4j.LogManager with the context classloader. | 3. If none of the above, JDK logging will be used. The check is *not* done based on log4j.properties but on the presence of org.apache.log4j.LogManager. Keep in mind that this should be in the context classloader path and that in this same path, *no* logging.properties should be present. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4270237#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...