Hi,
In your server.xml, check that the properties 'logstderr' and 'logstdout' are set to 'true'. The messages will then appear in the errors log file.
<LOG file="<path to errors file>" loglevel="info" logtoconsole="true"
usesyslog="false" createconsole="false" logstderr="true" logstdout="true" logvsid="false"/>
Also, see docs at http://docs.sun.com/source/817-6248/crsrvrx.html
Hope this helps.