2 Replies Latest reply: Jan 10, 2014 12:24 AM by user8058501 RSS

Unabl to upgrade Node Manager from WLS 11g to WLS 12g

user8058501 Newbie
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On a given machine, I have WLS 11g running with a domain and a node manager configured.

I have installed software for WLS 12c on the same machine


I wish to upgrade the node manager from WLS 11g to WLS 12c.


I use the documentation from:

Oracle® Fusion Middleware Upgrade Guide for Oracle WebLogic Server 12c Release 1 (12.1.1) E24497-02


1) Both my WLS server and NN and stopped before performing the upgrade.


2) As stated at p 2.6, I have set my environment variables:


My WLS 12c software has been installed at:



export MW_HOME=/u01/oracle/base/product/middleware/wls/wls12c


export CLASSPATH=$CLASSPATH:/u01/oracle/base/product/middleware/wls/wls12c/wlserver_12.1/server/lib/weblogic.jar




export PATH=$PATH:/u01/oracle/base/product/middleware/wls/wls12c/wlserver_12.1/server/bin


I have thus:


oracle@weblogic11g ~]$ echo $CLASSPATH


[oracle@weblogic11g ~]$ echo $MW_HOME


[oracle@weblogic11g ~]$ echo $PATH


[oracle@weblogic11g ~]$


3) Then I start the upgrade using the GUI, as explained p 4.3:


java weblogic.Upgrade -type nodemanager


But then, get the error:


Exception in thread "main" java.lang.ClassFormatError: weblogic.Upgrade (unrecognized class file version)

   at java.lang.VMClassLoader.defineClass(libgcj.so.7rh)

   at java.lang.ClassLoader.defineClass(libgcj.so.7rh)

   at java.security.SecureClassLoader.defineClass(libgcj.so.7rh)

   at java.net.URLClassLoader.findClass(libgcj.so.7rh)

   at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.7rh)

   at java.lang.ClassLoader.loadClass(libgcj.so.7rh)

   at java.lang.ClassLoader.loadClass(libgcj.so.7rh)

   at gnu.java.lang.MainThread.run(libgcj.so.7rh)



It seems that there is a problem with the definition of CLASSPATH.


Can someone explain me what is going wrong with this?


Thanks by advance .

Kind Regards.


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