Logging doesn't work for J2EE App

Question

Hi,
i've defined the following log config as XML in the .ear file of my app:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log-configuration SYSTEM "log-configuration.dtd">
<log-configuration>
     <log-formatters>
          <log-formatter
               name="de.axentiv.hne.format"
               pattern="%l %d %s %m"
               type="TraceFormatter"/>
     </log-formatters>
     <log-destinations>
          <log-destination
               effective-severity="ALL"
               name="de.axentiv.hne"
               pattern="c:\jms.log"
               type="FileLog">
               <formatter-ref
                    name="de.axentiv.hne.format"/>
          </log-destination>
     </log-destinations>
     <log-controllers>
          <log-controller
               minimum-severity="ALL"
               name="de.axentiv.hne">
               <associated-destinations>
                    <destination-ref
                         association-type="LOG"
                         name="de.axentiv.hne"/>
               </associated-destinations>
          </log-controller>
     </log-controllers>
</log-configuration>
I retrieve the logger:
private static final Location loc = Location.getLocation(JmsTestServlet.class);
JmsTestServlet.class resides in the package de.axentiv.hne which corresponds to the log destination defined above.
My logging statement is:
loc.debugT("***> Sending message: Test");
Unfortunately there is no file at c:\jms.log which contains my log statement. Does anybody know what my problem here might be.
Regards in advance and thank's
Heiko

Answer 1

Hi Heiko,
by default the logging api writes to a single trace file (defaultTrace.trc). This is done for performance reasons. At times though (and I would always suggest this on your local J2EE Engine), you want multiple trace files...one for each app.
I did a presentation on how to configure the J2EE Engine to do this. You can see the pdf of this presentation here: https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/using logging and tracing on the sap web as java.pdf
Hope this helps!
Cheers,
Jeff