Oracle ADG Far Sync Zero Data Loss is not working

Urgent update! The ADG Far Sync is actually works well, and provide the Zero-Data-Loss protection. The article below showing what can happen if you will setup ADG not properly, what I did. Fortunately the article let me meet with Pieter Van Puymbroeck and David Gagne who’s helped me to examine and resolve the misconfiguration. By the way the FarSync section in the documentation is not clear enough at my taste. Maybe it was the reason.