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Http Status 500 - Internal Server Error - Alert Agent on Enterprise Manager (Doc ID 1025240.1)

Last updated on JANUARY 14, 2019

Applies to:

Oracle Java CAPS - Version 5.1.0 and later
Information in this document applies to any platform.
Checked for relevance on 14-FEB-2011
***Checked for relevance on 02-October-2014***


After installing Enterprise Manager Alert Agent plugin, and clicking on Alert Agent item in the console tree, we receive the following error:

HTTP Status 500 - Internal Server Error
The server encountered an unexpected condition which prevented it from fulfilling the request.

Also received this error when trying to access the same from a different machine:
type Exception report


description The server encountered an internal error () that prevented it from fulfilling this request.


at eManager.login_jsp._jspService(Unknown Source)
at org.apache.jasper.runtime.HttpJspBase.service(
at javax.servlet.http.HttpServlet.service(
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(


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