Oracle REST Data Services

You are an Oracle database administrator or backend developer. The user wants to create RESTful APIs directly from an Oracle database using Oracle REST Data Services (ORDS).

What to check first

• Verify ORDS is installed: java -jar ords.jar version
• Confirm Oracle database is running and accessible: sqlplus -v
• Check that a database user with appropriate privileges exists (CONNECT, CREATE TABLE, etc.)

Steps

1. Install ORDS if needed by downloading from Oracle Technology Network and extracting to a directory (e.g., /opt/ords)
2. Configure ORDS by running java -jar ords.jar configure in interactive mode, providing database connection details (hostname, port, service name, admin credentials)
3. Create a database schema for your REST objects: CREATE USER rest_schema IDENTIFIED BY password123; and grant privileges: GRANT CREATE SESSION, CREATE TABLE, CREATE PROCEDURE TO rest_schema;
4. Define tables in your schema that will be exposed via REST (e.g., CREATE TABLE employees (id NUMBER PRIMARY KEY, name VARCHAR2(100), department VARCHAR2(50));)
5. Enable the schema for ORDS by running java -jar ords.jar enable-schema --schema rest_schema from the ORDS installation directory
6. Create a module and resource mapping by defining REST endpoints in ORDS configuration or using PL/SQL procedures with ORDS metadata
7. Start the ORDS server: java -jar ords.jar serve (runs on http://localhost:8080 by default)
8. Test your REST API endpoint: curl -X GET http://localhost:8080/ords/rest_schema/employees/ or POST/PUT/DELETE as needed

Code

-- Step 1: Create schema user
CREATE USER rest_schema IDENTIFIED BY SecurePass123;
GRANT CONNECT, RESOURCE, CREATE PROCEDURE TO rest_schema;

-- Step 2: Create sample table
CREATE TABLE rest_schema.employees (
  id NUMBER PRIMARY KEY,
  name VARCHAR2(100) NOT NULL,
  email VARCHAR2(100),
  department VARCHAR2(50),
  salary NUMBER(10, 2)
);

-- Step 3: Insert sample data
INSERT INTO rest_schema.employees VALUES (1, 'John Doe', 'john@company.com', 'Sales', 75000);
INSERT INTO rest_schema.employees VALUES (2, 'Jane Smith', 'jane@company.com', 'IT', 85000);
COMMIT;

-- Step 4: Create ORDS REST module and resource via PL/SQL
BEGIN
  ORDS.ENABLE_OBJECT(
    p_object_type => 'TABLE',
    p_object_name => 'EMPLOYEES',
    p_schema => 'REST_SCHEMA',
    p_enable => TRUE,
    p_publish => TRUE
  );
  COMMIT;
END;
/

-- Step 5: Verify ORDS is aware

Note: this example was truncated in the source. See the GitHub repo for the latest full version.

Common Pitfalls

• Treating this skill as a one-shot solution — most workflows need iteration and verification
• Skipping the verification steps — you don't know it worked until you measure
• Applying this skill without understanding the underlying problem — read the related docs first

When NOT to Use This Skill

• When a simpler manual approach would take less than 10 minutes
• On critical production systems without testing in staging first
• When you don't have permission or authorization to make these changes

How to Verify It Worked

• Run the verification steps documented above
• Compare the output against your expected baseline
• Check logs for any warnings or errors — silent failures are the worst kind

Production Considerations

• Test in staging before deploying to production
• Have a rollback plan — every change should be reversible
• Monitor the affected systems for at least 24 hours after the change