Oracle SQL Explorer MCP server

The Oracle MCP Server is an implementation of the Model Context Protocol designed for Oracle database operations. It provides tools for interacting with Oracle databases through MCP, utilizing Server-Sent Events (SSE) for real-time communication, allowing you to list tables, describe their structure, and execute SQL statements.

Prerequisites

• JDK 17
• Maven 3.6+
• Oracle Database instance
• Cursor IDE

Installation and Configuration

Database Configuration

Create or modify application.properties or application.yml with your Oracle database connection details:

oracle:
  connectionString: jdbc:oracle:thin:@//your-oracle-host:1521/your-service-name
  username: your-username
  password: your-password

Cursor MCP Configuration

Configure the MCP server in your Cursor IDE settings:

{
  "mcpServers": {
    "oracle-mcp-server": {
      "url": "http://{server-ip}:{server-port}/sse",
      "enabled": true
    }
  }
}

Replace {server-ip} with your server's IP address and {server-port} with your server's port number.

Building and Running

Build the project:

mvn clean install

Run the application:

mvn spring-boot:run

Available Tools

List Tables

Lists all tables in the Oracle database.

• Tool name: list_tables
• Description: Get a list of all tables in Oracle database
• Usage: No parameters required
• Returns: Newline-separated list of table names

Describe Table

Provides detailed information about a specific table's structure.

• Tool name: describe_table
• Description: Get structure information of specified table
• Parameter: tableName - Name of the table to describe
• Returns: CSV format of table structure including:
  • Column names
  • Data types
  • Nullable status
  • Data length
  • Primary key information

Execute SQL

Executes SQL statements against the Oracle database.

• Tool name: execute_sql
• Description: Execute Oracle SQL statement
• Parameter: sql - SQL statement to execute
• Returns:
  • For SELECT: CSV format of query results
  • For INSERT/UPDATE/DELETE: Number of affected rows

Error Handling

The server includes robust error handling for:

• Connection failures
• Invalid SQL statements
• Missing tables or columns
• Permission issues

When errors occur, the server will return appropriate error messages to help you identify and resolve the issue.

Security Considerations

The server implements several security features:

• Password encryption in configuration
• Connection pool management
• SQL injection prevention
• Error message sanitization

Always ensure you're using secure credentials and limiting database access permissions appropriately.

How to add this MCP server to Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > MCP and click "Add new global MCP server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.