Weblogic Managed Server Not Started With "java.lang.NoClassDefFoundError" Error (Doc ID 2084437.1)

Last updated on NOVEMBER 05, 2016

Applies to:

Oracle WebLogic Server - Version 12.1.3.0.0 and later
Information in this document applies to any platform.

Symptoms

On : 12.1.3.0.0 version, General component

When attempting to start the server Managed server the following errors occur:

ERROR
-----------------------
1. java.lang.NoClassDefFoundError: weblogic/diagnostics/instrumentation/engine/InstrumentationEngineConfiguration
2. java.lang.IllegalStateException: Unable to perform operation: post construct on weblogic.t3.srvr.PreConfigBootService


Changes

 NA

Cause

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