Wily Introscope 9 started with warnings

Hi experts,

After Wily Introscope EM installation I statarted EM with the following command ./EMCtrl.sh start

But after checking IntroscopeEnterpriseManager.log I found the following warnings: Do you have any idea how to correct them?

/usr/sap/ccms/apmintroscope/deploy for new files every 60 seconds

4/17/14 03:56:05.458 PM BRT [INFO] [main] [Manager] Introscope Enterprise Manager started with management module warnings.

log4j:WARN No appenders could be found for logger (com.wily.apm.em.monitor.support.util.TimingThreadPool).

log4j:WARN No appenders could be found for logger (com.wily.apm.em.monitor.support.util.TimingThreadPool).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN Please initialize the log4j system properly.

log4j:WARN No appenders could be found for logger (com.wily.apm.em.monitor.support.util.TimingThreadPool).

log4j:WARN No appenders could be found for logger (com.wily.apm.em.monitor.support.util.TimingThreadPool).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN Please initialize the log4j system properly.

Thanks