Denodo is not an OAuth authentication provider. You could integrate Denodo with OAuth providers when you publish the REST web service with OAuth2.0 authentication.
While configuring OAuth 2.0 with Validation mode as JWT, you could specify *Issuer and JWKS URL* values with the Issuer and Metadata URI of your OAuth Authorization Server respectively. Once you are done with OAuth configuration changes, restart the Denodo server to propagate the changes.
You could refer to sections, [OAuth Authentication](https://community.denodo.com/docs/html/browse/7.0/vdp/administration/server_administration_-_configuring_the_server/oauth_authentication/oauth_authentication#oauth-authentication), [JWT](https://community.denodo.com/docs/html/browse/7.0/vdp/administration/server_administration_-_configuring_the_server/oauth_authentication/setting-up_the_oauth_authentication_in_the_virtual_dataport_server#jwt) of Virtual DataPort Administration Guide to configure OAuth 2.0.
Hope this helps!