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NoClassDefFoundError: JSP Tag Class Files Not Found (Doc ID 985081.1)

Last updated on MARCH 01, 2019

Applies to:

Oracle Containers for J2EE - Version to [Release AS10gR3]
Information in this document applies to any platform.


A .tag based web application is deployed to OracleAS OC4J with multiple JVMs.

The .tag page is invoked many times. Some invocations provide correct results but some result in an error,

500 Internal Server Error OracleJSP: An error occurred. Consult your application/system administrator for support. Programmers should consider setting the init-param debug_mode to "true" to see the complete exception message.

and the following error is found in the application log file

09/12/14 <TIME> [ecid: <IP>:<PORT>:<ECID>] tagdemo-war-1.0: JspServlet: Sharing required page is not possible: Exception: java.lang.NoClassDefFoundError: _oracle/_jsp/_tag/_dprs/_tagDemo_tag




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