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WebLogic Server (WLS) Support Pattern: Investigating Different Classloading Issues (Doc ID 1572862.1)

Last updated on FEBRUARY 27, 2024

Applies to:

Oracle WebLogic Server - Version 8.1 and later
Information in this document applies to any platform.


This document describes different types of classloading exceptions and troubleshoot the most frequent causes of these errors. It covers common scenarios when ClassCastException (CCE), NoClassDefFoundError (NCDFE), ClassNotFoundException (CNFE), NoSuchMethodError (NSME), or UnsatisfiedLinkError (ULE) occur.

Troubleshooting Steps

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In this Document
Troubleshooting Steps
 ClassCastException (CCE), NoClassDefFoundError(NCDFE), ClassNotFoundException (CNFE) or NoSuchMethodError (NSME)
 Why can ClassCastException, NoClassDefFoundError, ClassNotFoundException and NoSuchMethodError occur?
 Possible solutions for ClassCastException, NoClassDefFoundError, ClassNotFoundException, and NoSuchMethodError
 Troubleshooting ClassCastException, NoClassDefFoundError, ClassNotFoundException and NoSuchMethodError
 Why can UnsatisfiedLinkError occur?
 Possible solutions for UnsatisfiedLinkError
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