I believe such policies apply to product design and specifications and in case of the Oracle community involves Jive.
There have been similar questions in the Jive support forum, for example:
I wonder why this old thread has been revived again. Perhaps someone responded and then deleted the response? Not me.
Anyway, according to the link you provided:
Quote: The Oracle Accessibility Guidelines are based on the 2017 Revised Section 508 of the Rehabilitation Act of 1973 as amended, and the World Wide Web Consortium's (W3C) Web Content Accessibility Guidelines version 2.0 guidelines at the AA level (WCAG 2.0 AA).
Since this the community site uses Jive 188.8.131.529a91, which you can see checking the page source, and WCAG 2.0 Level A compliance has been achieved in Jive 9.0.2 according to Jive, what do you think the chances are of this version being compliant? What's your point, btw, why do you wonder?
But perhaps you need the site admin to answer - good luck.