Enabling trace logging for the UMC log files on version 6.9.1 or older
Go to the path:
C:\Program Files (x86)\Symantec\Data Center Security Server\Server\tomcat\symapps\umc\umcservices\WEB-INF\classes\log4j.xml
In line 23 locate:
Change this from INFO to TRACE.
Once this is done, restart the DCS Services. The umclog.log file will start logging with trace enabled.
When finished, please revert the changes back to what they were and restart services.