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X11 DISPLAY error messages in NI logs while opening a scan (Doc ID 2462544.1)

Last updated on NOVEMBER 23, 2023

Applies to:

Oracle Communications Network Integrity - Version and later
Information in this document applies to any platform.


When using the Network Integrity UI to launch a scan the errors below could be seen in the logs.  When the scans are launched X11 is needed to display the pop-up.  

This solution will work when the following errors logs are seen.

Example 1

javax.servlet.ServletException: java.awt.AWTError: Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable.
at weblogic.servlet.internal.ServletStubImpl.execute(
at weblogic.servlet.internal.TailFilter.doFilter(
at weblogic.servlet.internal.FilterChainImpl.doFilter(

Example 2

<Oct 6, 2022 11:34:55,933 AM AST> <Error> <oracle.adf.model.log.adapteddc.share.SharedDataControl> <BEA-000000> <No key attributes were found for the bean structure definition oracle.communications.integrity.WorkCounts>
<Oct 6, 2022 11:34:55,957 AM AST> <Error> <oracle.adfinternal.controller.application.AdfcExceptionHandler> <ADFC-50018> <ADFc: No exception handler was found for an application exception.
java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(
at java.awt.GraphicsEnvironment.createGE(
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(
at java.awt.image.BufferedImage.createGraphics(
at java.awt.image.BufferedImage.getGraphics(



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