Running Forms From Forms Builder Shows Blank Page. Java Console Shows: java.lang.ClassNotFound:Exception java.io.IOException (Doc ID 392985.1)

Last updated on NOVEMBER 03, 2016

Applies to:

Oracle Forms - Version 9.0.4.0.19 and later
Information in this document applies to any platform.
Checked relevance 27-May-2008
Checked for relevance on 15-Dec-2010
Checked for relevance on 26-Jun-2012
Checked for relevance on 02-Jan-2014

Symptoms

When running forms (test.fmx) from Forms Builder 9.0.4.0.19, browser displays blank page.
 
Java console shows the following error:
 
java.lang.ClassNotFoundException: class oracle.forms.engine.Main not found
java.io.IOException: Connection failure with 407
at sun.plugin.protocol.jdk12.http.HttpURLConnection.getInputStream(Unknown Source)
java.lang.ClassNotFoundException: java.io.IOException: Connection failure with 407

Changes

Fresh Installation with no modifications done.

Cause

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