Oracle Application Server Control 10g Returns Error "java.lang.NoClassDefFoundError" or Shows Partially Built Topology Page after Login (Doc ID 423336.1)

Last updated on FEBRUARY 14, 2017

Applies to:

Enterprise Manager for iAS - Version: 10.1.2.0.2 to 10.1.2.3.0
Information in this document applies to any platform.
Checked for relevance on 11-April-2011

Symptoms

Various symptoms can be experienced.
An error has occurred!
IOException in sending Request :: Connection Refused
"An error was encountered while loading page. We were unable to find a target. This probably indicates a stale bookmark, or a configuration problem"
Other AS Console operations and some pages function normally.
emctl start iasconsole
emctl stop iasconsole

http://mymachine.oracle.com:1830/emd/main/
http://mymachine.oracle.com:1810/emd/console/aboutApplication

Cause

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