Troubleshooting Java Agent on Tomcat server with Felix framework

[Narendra.Chaluchalamala]

When configuring an AppDynamics Java Agent on a Tomcat server with Felix framework, some users ran into the following error message: 

java.lang.NoClassDefFoundError: com/singularity/ee/agent/appagent/entrypoint/bciengine/FastMethodInterceptorDelegatorBoot 
at org.apache.felix.http.base.internal.DispatcherServlet.service(DispatcherServlet.java) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 

This error is due to missing the following configurations which apply to the Felix framework.

1. Navigate to the <Tomcat-install-dir>/webapps/ROOT/WEB-INF/etc/config folder.
2. Edit the file felix-framework.properties
3. Search for the property org.osgi.framework.bootdelegation" property
4. Add com.singularity.* to this property.
   • Example:

   • org.osgi.framework.bootdelegation=sun.*,com.sun.*,com.sun.jndi.ldap,com.yourkit.*,__redirected,com.singularity.*