Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file When Installing Oracle REST Data Services / APEX Listener

(Doc ID 1636957.1)

Last updated on FEBRUARY 08, 2017

Applies to:

Oracle REST Data Services - Version 2.0 and later
Oracle Application Express (formerly HTML DB) - Version 4.0 and later
Information in this document applies to any platform.


When attempting to run Oracle REST Data Services (ORDS) / the APEX Listener using the commands:

java -jar apex.war    /    java -jar ords.war

The following error is seen:


The JDK version in use is JDK 1.50_24.


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