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EM13c : OMS Fails To Start Error Wth "Oracle Management Server Is Down. Console May Not Be Up" (Doc ID 2995168.1)

Last updated on DECEMBER 28, 2023

Applies to:

Enterprise Manager Base Platform - Version 13.4.0.0.0 and later
Information in this document applies to any platform.

Symptoms

In Enterprise Manager (EM) Cloud Control, OMS fails to start with below error:

$ emctl start oms
Oracle Enterprise Manager Cloud Control 13c Release 4
Copyright (c) 1996, 2020 Oracle Corporation. All rights reserved.
Starting Oracle Management Server...
WebTier Successfully Started
Oracle Management Server is Down. Console may not be up.
Check the following log files:
EM log files: $EM_INSTANCE_BASE/gc_inst/em/EMGC_OMS1/sysman/log/emctl.log, emoms.trc, emoms_pbs.trc
Managed Server log files: $EM_INSTANCE_BASE/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/logs/EMGC_OMS1.out
JVMD Engine is Up
Starting BI Publisher Server ...
BI Publisher Server Already Started
BI Publisher Server is Up

$EM_INSTANCE_BASE/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/logs/EMGC_OMS1.out

<Sep 24, 2023 12:02:09,675 PM EDT> <Error> <Deployer> <BEA-149231> <Unable to set the activation state to true for the application "emgc".
weblogic.application.ModuleException: java.lang.ClassNotFoundException: oracle.javatools.util.Maps$WeakHashMap
at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:140)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:233)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:228)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
Truncated.
Caused By: java.lang.ClassNotFoundException: oracle.javatools.util.Maps$WeakHashMap
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:1029)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:990)
at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:101)
at weblogic.utils.classloaders.GenericClassLoader.doFindClass(GenericClassLoader.java:611)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:543)

Cause

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In this Document
Symptoms
Cause
Solution


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