oracledb

What is oracledb?

The oracledb npm package is a Node.js driver for Oracle Database, providing a way to connect to Oracle databases, execute SQL queries, and manage database transactions. It supports various features such as connection pooling, data types, and advanced Oracle Database features.

What are oracledb's main functionalities?

Connecting to Oracle Database

This code demonstrates how to establish a connection to an Oracle Database using the oracledb package. It includes error handling and ensures the connection is closed after use.

const oracledb = require('oracledb');

async function run() {
  let connection;

  try {
    connection = await oracledb.getConnection({
      user: 'your_username',
      password: 'your_password',
      connectString: 'localhost/XEPDB1'
    });
    console.log('Connection was successful!');
  } catch (err) {
    console.error(err);
  } finally {
    if (connection) {
      try {
        await connection.close();
      } catch (err) {
        console.error(err);
      }
    }
  }
}

run();

Executing SQL Queries

This code sample shows how to execute a SQL query using the oracledb package. It retrieves rows from the 'employees' table where the department_id is 101.

const oracledb = require('oracledb');

async function run() {
  let connection;

  try {
    connection = await oracledb.getConnection({
      user: 'your_username',
      password: 'your_password',
      connectString: 'localhost/XEPDB1'
    });

    const result = await connection.execute(
      `SELECT * FROM employees WHERE department_id = :id`,
      [101] // bind value for :id
    );

    console.log(result.rows);
  } catch (err) {
    console.error(err);
  } finally {
    if (connection) {
      try {
        await connection.close();
      } catch (err) {
        console.error(err);
      }
    }
  }
}

run();

Using Connection Pooling

This code demonstrates how to use connection pooling with the oracledb package. It creates a pool of connections, retrieves a connection from the pool, executes a query, and then closes the connection and the pool.

const oracledb = require('oracledb');

async function run() {
  let pool;

  try {
    pool = await oracledb.createPool({
      user: 'your_username',
      password: 'your_password',
      connectString: 'localhost/XEPDB1',
      poolMin: 2,
      poolMax: 10,
      poolIncrement: 1
    });

    const connection = await pool.getConnection();
    const result = await connection.execute(`SELECT * FROM employees`);
    console.log(result.rows);
    await connection.close();
  } catch (err) {
    console.error(err);
  } finally {
    if (pool) {
      try {
        await pool.close(0);
      } catch (err) {
        console.error(err);
      }
    }
  }
}

run();

Other packages similar to oracledb

mysql

The mysql package is a Node.js driver for MySQL databases. It provides similar functionalities to oracledb, such as connecting to the database, executing queries, and managing transactions. However, it is specifically designed for MySQL databases and does not support Oracle-specific features.

pg

The pg package is a Node.js driver for PostgreSQL databases. Like oracledb, it allows you to connect to the database, execute SQL queries, and manage transactions. It is tailored for PostgreSQL and includes features specific to that database system, but it does not support Oracle Database features.

mssql

The mssql package is a Node.js driver for Microsoft SQL Server. It offers functionalities similar to oracledb, such as database connections, query execution, and transaction management. It is designed for use with SQL Server and includes features specific to that database, but it does not support Oracle Database features.

README

node-oracledb version 5.5.0

The node-oracledb add-on for Node.js powers high performance Oracle Database applications. Applications can be written in TypeScript, or directly in JavaScript.

Use node-oracledb 5.5.0 to connect Node.js 14, or later, to Oracle Database. Older versions of node-oracledb may work with older versions of Node.js.

Node-oracledb supports basic and advanced features of Oracle Database and Oracle Client. See the homepage for a list.

The node-oracledb module is open source and maintained by Oracle Corp. It is stable, well documented, and has a comprehensive test suite.

Installation

See Getting Started with Node-oracledb and Quick Start Node-oracledb Installation.

Documentation

See Documentation for the Oracle Database Node.js Add-on and the CHANGELOG.

Examples

See the examples directory. Start with examples/example.js.

Help

Issues and questions about node-oracledb can be posted on GitHub or Slack (link to join Slack).

Tests

To run the test suite see test/README.

Contributing

Node-oracledb is an open source project. See CONTRIBUTING for details.

Oracle gratefully acknowledges the contributions to node-oracledb that have been made by the community.

License

Copyright (c) 2015, 2022, Oracle and/or its affiliates.

You may not use the identified files except in compliance with the Apache License, Version 2.0 (the "License.")

You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and limitations under the License.

Developers choosing to distribute a binary implementation of this project are responsible for obtaining and providing all required licenses and copyright notices for the third-party code used in order to ensure compliance with their respective open source licenses.