javax/jdo/JdoHelper used with servlet

[nitinnitin sharma]

hi everybody..
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JdoHelper.getPersistenceManagerFactory(Property props)
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this method is perfectly working in a application but when I used it with a servlet , an exception is thrown saying --NoClassDefFoundError :javax/jdo/JdoHelper

Thank you very much...

[Eelco den Heijer]

Hi, probably you have to add the jdo.jar to the classpath of the servlet container, or add the jdo.jar in WEB-INF/lib of your web app.

[nisharma sharma]

Thank you very much for this help.
Now I think its accessing the JDOHelper but giving a new exception---
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javax.do.JdoFatalUserException:Invalid driver class oracle.jdbc.driver.OracleDriver: Java.lang.classNotFoundException: oracle.jdbc.driver.OracleDriver---
I used the same code in different application and its working fine there.
I have put classes12.zip in the lib folder.
more help please?
thanks