Hi Jason ,
There is still one problem that I am facing.

My jars are logging using log4j. I have added the classpath to its
properties
file in the webapplication.classpath and PARENT_CLASSLOADER ,
however it is not able to access to log4j.properties and I get the error

No appender could be found. Any suggestions ?

The webapp that is using BIRT api uses log4j too.