Question

java.lang.NoClassDefFoundError: happens sporadically on Resin sever start up

This is on Resin 3.0.21
Using Java 1.5 on Linux machine…

I have a servlet defined on the web.xml to load the log4j.properties.
This is thrown when the servlet is trying to load on start up..

log4j-init: init log4j:ERROR Could not instantiate class [org.apache.log4j.DailyRollingFileAppender].
java.lang.ClassNotFoundException: org.apache.log4j.DailyRollingFileAppender [java.lang.NoClassDefFoundError: org/apache/log4j/FileAppender]
at com.caucho.loader.DynamicClassLoader.loadClass(DynamicClassLoader.java:1264)
at com.caucho.loader.DynamicClassLoader.findClass(DynamicClassLoader.java:1149)
at com.caucho.loader.DynamicClassLoader.loadClass(DynamicClassLoader.java:1072)
at com.caucho.loader.DynamicClassLoader.loadClass(DynamicClassLoader.java:1021)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at org.apache.log4j.helpers.Loader.loadClass(Loader.java:160)
at org.apache.log4j.helpers.OptionConverter.instantiateByClassName(OptionConverter.java:309)
at org.apache.log4j.helpers.OptionConverter.instantiateByKey(OptionConverter.java:112)
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:620)

Answer 1

We found out that this usually happens when there is no free disk space on the server