Installer User Interface Mode Not Supported Unable to load and to prepare the installer in console or silent mode.'

Document ID : KB000071690
Last Modified Date : 22/02/2018
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Issue:
When trying to apply Web Viewer maintenance in console mode using
java -jar CA_OM_WEBVIEWER_12_1_Updt.jar -i console, I get the error:
Installer User Interface Mode Not Supported
Unable to load and to prepare the installer in console or silent mode
Environment:
 Red Hat Enterprise Linux Server release 6.6 (Santiago)
Resolution:
The console mode installation will fail if the DISPLAY environment variable is set.
Execute "unset DISPLAY" before running the installation.