AI assistants are getting good at doing things, not just talking — largely thanks to MCP (Model Context Protocol), the open standard that lets an AI client call external tools. Oracle recently shipped a managed MCP server in OCI (Database Tools MCP Server) that lets an AI client run queries against an Oracle database, with OAuth and role-based access built in.

I wanted to use it for something practical: read-only health checks for an Oracle E‑Business Suite database on 19c, surfaced inside an AI chat — "Is the database up? Any blocking sessions? Which concurrent managers are down?"

It worked in the end — an AI assistant pulling live, read-only database health data. But getting there taught me a lot about how managed MCP + OAuth actually behaves. Here's the honest journey.

The setup, in plain terms

A managed MCP server in OCI, pointed at the database through a read-only user.