Oracle's Managed MCP Hits Production: OAuth Gotchas, Private Endpoints, and What Actually Works

Oracle's managed MCP server promises to securely connect AI assistants to databases through the Model Context Protocol, but real-world deployment exposes critical gaps between the promised architecture and what clients actually encounter. The most significant issue isn't authentication itself—it's OAuth discovery behavior that breaks self-hosted chat UIs, where unauthenticated requests receive 404 errors instead of the 401 status that triggers login flows. For teams planning AI-database integration at scale, understanding these implementation details—from Private Endpoint requirements to role-based token handling—is essential to avoid months of troubleshooting.