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

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





      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.