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gemini-cli-extensions/oracledb

v0.2.7Apache-2.0

Connect, query, and interact with Oracle Databases and their data.

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Oracle Database

Note

Currently in beta (pre-v1.0), and may see breaking changes until the first stable release (v1.0).

This repository packages MCP Toolbox's prebuilt oracledb server as a plugin/extension to interact with Oracle Database instances. It can be used with various AI agents, including Antigravity, Claude Code and Codex, to manage your databases, execute queries, explore schemas, and troubleshoot issues using natural language prompts.

Important

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Table of Contents

Why Use Oracle Database?

  • Seamless Workflow: Integrates seamlessly into your AI agent's environment. No need to constantly switch contexts for common database tasks.
  • Natural Language Queries: Stop wrestling with complex commands. Explore schemas and query data by describing what you want in plain English.
  • Full Database Insights: Monitor active sessions, analyze query plans, and manage tablespace usage using natural language.
  • Code Generation: Accelerate development by asking your agent to generate data classes and other code snippets based on your table schemas.

Prerequisites

Before you begin, ensure you have the following:

  • One of these AI agents installed:
  • Access to an Oracle Database instance.
  • Oracle Database permissions:
    • CREATE SESSION for basic connectivity.
    • SELECT privileges on V$ and DBA_ views for monitoring and diagnostics.

Getting Started

Configuration

Please keep these settings handy during the installation process:

  • ORACLE_CONNECTION_STRING: The connection string for your Oracle Database (e.g., host:port/service_name or TNS alias).
  • ORACLE_USERNAME: Your Oracle database username.
  • ORACLE_PASSWORD: Your Oracle database password.
  • ORACLE_WALLET: (Optional) Path to the directory containing your Oracle Wallet files.
  • ORACLE_USE_OCI: (Optional) Set to true to use the OCI (thick client) driver.

Installation & Usage

To start interacting with your database, install the extension for your preferred AI agent, then launch the agent and use natural language to ask questions or perform tasks.

For the latest version, check the releases page.

Antigravity

You can use either of these two agents for Antigravity:

Antigravity 2.0 (IDE)

1. Install the plugin:

Install the plugin directly from the remote GitHub repository:

agy plugin install https://github.com/gemini-cli-extensions/oracledb

2. Set env vars: Set your environment vars as described in the configuration section.

(Tip: You can verify the MCP server is active by running the /mcp command in your active session.)

Antigravity CLI

You can install plugins directly from a remote GitHub repository.

1. Install the plugin:

agy plugin install https://github.com/gemini-cli-extensions/oracledb

2. Set env vars: Set your environment vars as described in the configuration section.

Claude Code

1. Set env vars: In your terminal, set your environment vars as described in the configuration section.

2. Start the agent:

claude

3. Install the plugin:

/plugin install oracledb@claude-plugins-official

_(Tip: Run /plugin list inside Claude Code to verify the plugin is active, or /reload-plugins if you just installed it.)

Codex

1. Install marketplace:

codex plugin marketplace add GoogleCloudPlatform/data-agent-kit

2. Install the plugin:

codex plugin add oracledb@data-agent-kit

3. Set env vars: Enter your environment vars as described in the configuration section.

4. (Optional) Update the marketplace:

codex plugin marketplace upgrade data-agent-kit

Installing via a compatible Agent Plugins client

Installing via a compatible Agent Plugins client

This repository is a valid Agent Plugins (v1) plugin. Any Agent Plugins–compatible client can install it directly using its own built-in plugin command — no extra tooling required — by pointing at this repository:

https://github.com/gemini-cli-extensions/oracledb

Beyond harnesses covered by the native install above, compatible clients include VS Code, Cursor, GitHub Copilot, and Kiro. See your agent's documentation for its exact install command.

Set env vars: Set your environment vars as described in the configuration section.

Usage Examples

Interact with Oracle Database using natural language:

  • Query Data:
    • "Show me the first 10 rows from the EMPLOYEES table."
    • "What is the total salary by department?"
  • Generate Data:
    • "Please generate and insert 10 rows of sample data into trainer_products."
    • "Populate the description_vector column. For every row, generate a vector based on the description column using the create_vectors tool."
  • Monitor and Analyze:
    • "List all active sessions."
    • "Explain the execution plan for this query: SELECT * FROM orders WHERE order_id = 100"
    • "What is the tablespace usage?"
  • Object Health:
    • "List all invalid objects in the schema."

Available Tools

The tools come from MCP Toolbox's prebuilt oracledb server, grouped into toolsets:

  • oracle_database_tools - Use these skills to manage and monitor Oracle databases by executing SQL statements, exploring schema metadata, analyzing query performance, monitoring active sessions and resource consumption, and managing storage and object health.

For the full, up-to-date list, see the oracledb prebuilt config in the MCP Toolbox repository.

Generating Skills Instead

The tool-backed skills this plugin used to ship were generated from the same prebuilt toolsets. If your agent lacks deferred tool loading, or you prefer skills, regenerate them with the script in this repository:

VERSION=<toolbox version> ./.github/scripts/generate_skills.sh

Use the toolbox version pinned in mcp.json. A single toolset, without the script:

npx @toolbox-sdk/server@<toolbox version> --prebuilt oracledb skills-generate \
  --name "<skill name>" \
  --toolset "<toolset>" \
  --description "<what it is for>"

The generated scripts call the toolbox through npx, so no binary download is needed. See Generate Agent Skills in the MCP Toolbox repository.

Additional Agent Skills

Find additional skills to support your entire software development lifecycle at github.com/gemini-cli-extensions.

Troubleshooting

Use the debug mode of your agent (e.g., gemini --debug) to enable debugging.

Common issues:

  • "✖ Error during discovery for server: MCP error -32000: Connection closed": The database connection has not been established. Ensure your configuration is set correctly.
  • "✖ MCP ERROR: Error: spawn npx ENOENT": Node.js is not installed, or npx is not on your PATH. Install Node.js, which provides npx.
  • "cannot execute binary file": The Toolbox binary did not download correctly. Ensure the correct binary for your OS/Architecture has been downloaded.