Open Source Document Management System | OpenKM

i need to use openkm with oracle11g, and i also installed the oracle 11g in my localhost. i just modified the file of "openkm.cfg" as this website says:
hibernate.dialect=org.hibernate.dialect.OracleDialect
hibernate.hbm2ddl=create

After doing this, i tried to access the website "localhost:8080/OpenK", but openkm just gave a error message like this:
Class: org.apache.jasper.JasperException
Message: javax.servlet.ServletException: java.lang.ExceptionInInitializerError
Date: ........

Is there someone would tell me the detail steps about How to configure openkm to use oracle(or oracle11g the better), thanks very much!

you can send me email . ( sadwolf0070318@gmail.com )

Oracle is only supported by professional version. Is needed some source code changes to get it running OpenKM by default will not be able to start with Oracle. There're some methods that can not be directly supported by hibernate.

Thanks very much!