My Oracle Support Banner

WLS: java.lang.IllegalArgumentException: XMLStreamReader may not be null : When Starting APEX Listener on IBM AIX (Doc ID 1375892.1)

Last updated on FEBRUARY 09, 2023

Applies to:

Oracle REST Data Services - Version 1.1.0 and later
Oracle Application Express (APEX) - Version 3.2.1 and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
IBM AIX on POWER Systems (64-bit)
IBM AIX on POWER Systems (32-bit)


When trying to start the APEX Listener which has been deployed in a WebLogic Server the following error is shown.  This is for WLS and Glassfish implementations.

When the APEX Listener was initially deployed, all worked well. The problem started to occur when you stop and start the APEX Listener through the WebLogic Server Console. Note that this issue only occurs when the APEX Listener is deployed on a IBM AIX platform.


APEX Listener on IBM AIX was stopped and started (eg bounced).


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.