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

Last updated on NOVEMBER 05, 2016

Applies to:

Oracle Containers for J2EE - Version: 10.1.3.0.0 to 10.1.3.5.0 - Release: AS10gR3 to AS10gR3
Information in this document applies to any platform.
***Checked for relevance on 21-Aug-2011***

Symptoms

.tag based web application is deployed to OracleAS 10.1.3.3 OC4J with multiple JVMs.

the .tag page is invoked many times. Some invocations provide correct result; the other result on the 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 16:16:27.765 [ecid: 10.73.1.88:70427:1260803787759:192,0] tagdemo-war-1.0: JspServlet: Sharing required page is not possible: Exception: java.lang.NoClassDefFoundError: _oracle/_jsp/_tag/_dprs/_tagDemo_tag


Cause

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