Hi,
 
I'm using weblogic 10, and deployed my application as EAR.
 
EAR
    
 
Caused by: ch.qos.logback.core.util.DynamicClassLoadingException: Failed to instantiate type com.mycompany.CustomeAppender
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassName(OptionHelper.java:45)
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassName(OptionHelper.java:23)
        at      at ch.qos.logback.core.joran.action.AppenderAction.begin(AppenderAction.java:50)
        at      ... 51 common frames omitted
Caused by: java.lang.ClassNotFoundException: com.mycompany.CustomeAppender
        at      at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at      at java.security.AccessController.doPrivileged(Native Method)
        at      at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)