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From "Jeffrey Nguyen (jeffrngu)" <>
Subject Issues changing log4j levels for tomcat web apps
Date Thu, 17 Jun 2010 17:44:31 GMT
Hi Everyone,


This question might be a little off topic, but I thought since it
involved tomcat web apps, I figured someone might know the answer.


I have Liferay EE 5.2.6  running on top of tomcat 6.0.26.   Liferay has
an admin GUI page to allows me to change log level settings for
different packages.  The issue I'm facing is changing the log levels
seems to only take effect on the ROOT web apps.  All the other plugin
web apps do not seem to response to the new log levels.   I checked on
Liferay support forums and found that others are also facing this


Is this really Liferay's specific problem or is it Tomcat issue in


In plain vanilla Tomcat, are the web apps loaded in a WebAppClassLoader
and ROOT web app is loaded by StandardClassLoader?  If so, I assume this
is really just an issue with Tomcat right?  How do I get around this


In a previous project I worked with, we relied on DB change notification
to relay the new log level to all tomcat web apps.  However, I don't
want to consider that solution because it requires design changes and it
has its own set of problem.


Any pointers would be much appreciated!  Thanks in advance!




- Jeffrey Nguyen


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