13c Agent Failed to Start With Error "java.lang.NoClassDefFoundError: org/apache/log4j/Category"
(Doc ID 2853069.1)
Last updated on JANUARY 17, 2023
Applies to:
Enterprise Manager Base Platform - Version 13.3.0.0.0 and laterInformation in this document applies to any platform.
Symptoms
EM 13.3 Agent failed to start with below error
<agent_base>/agent_13.3.0.0.0/bin/emctl start agent
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/Category
at oracle.sysman.emd.targetIntg.TargetInstaller.<clinit>(TargetInstaller.java:83)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Category
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:312)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 1 more
Oracle Enterprise Manager Cloud Control 13c Release 3
Copyright (c) 1996, 2018 Oracle Corporation. All rights reserved.
Starting agent ...........................................................................................................................failed.
Consult emctl.log and emagent.nohup in: <agent_base>/agent_inst/sysman/log
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/Category
at oracle.sysman.emd.targetIntg.TargetInstaller.<clinit>(TargetInstaller.java:83)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Category
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:312)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 1 more
Oracle Enterprise Manager Cloud Control 13c Release 3
Copyright (c) 1996, 2018 Oracle Corporation. All rights reserved.
Starting agent ...........................................................................................................................failed.
Consult emctl.log and emagent.nohup in: <agent_base>/agent_inst/sysman/log
Changes
Cause
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In this Document
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| Cause |
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