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Oacore Services Fails With Error: java.lang.NoClassDefFoundError: oracle/classloader/util/InitialLoadersConfiguration After Restoring j2ee Folder Which Was Deleted Accidentally (Doc ID 2854458.1)

Last updated on MAY 02, 2022

Applies to:

Oracle E-Business Suite Technology Stack - Version 12.1.3 to 12.1.3 [Release 12.1]
Information in this document applies to any platform.


Accidentally deleted the folder $IAS_ORACLE_HOME/j2ee and copied it back from the backup. But while attempting to start oacore Services, the following error occurs.

$ start oacore_server(n)

Exception in thread "main" java.lang.NoClassDefFoundError: oracle/classloader/util/InitialLoadersConfiguration
Caused by: java.lang.ClassNotFoundException: oracle.classloader.util.InitialLoadersConfiguration
  at Method)
  at java.lang.ClassLoader.loadClass(
  at sun.misc.Launcher$AppClassLoader.loadClass(
  at java.lang.ClassLoader.loadClass(
  at java.lang.ClassLoader.loadClassInternal(
Could not find the main class: oracle.oc4j.loader.boot.BootStrap. Program will exit.


The folder $IAS_ORACLE_HOME/j2ee was removed accidentally.


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