When you first open SQL Developer 21.4.3, it will prompt for:
After these, the main interface loads. You can add database connections via the green + icon.
Important: SQL Developer 21.4.3 is an Oracle product. The instructions below assume you want the official Oracle SQL Developer release 21.4.3. If you need a different vendor build or a more recent version, choose that instead.
After download, compute the SHA-256 hash. On Windows PowerShell:
Get-FileHash .\sqldeveloper-21.4.3-063.0637-windows-x64.zip
Compare the output against the hash listed on the Oracle archive page. If they match, the file is genuine.
Oracle SQL Developer is the industry’s go-to free IDE for working with Oracle Database. While Oracle continuously releases new versions, version 21.4.3 remains a critical milestone for many DBAs and developers. It offers a perfect balance of modern features (like Autonomous Database support) and proven stability.
If you need to download SQL Developer 21.4.3 for a legacy project, specific environment compatibility, or personal preference, this guide will walk you through the exact process.
Version 21.4.3 is a solid choice for production environments because it:
For the latest features, always check for newer releases (e.g., 22.x, 23.x), but for stability and proven reliability, 21.4.3 remains a widely used version.
Disclaimer: Oracle SQL Developer is a free tool, but an Oracle account (free to create) is required to download it from Oracle’s official website. Always download software directly from Oracle to avoid malicious third-party modifications.
Downloading Oracle SQL Developer 21.4.3: A Step-by-Step Guide
Introduction
Oracle SQL Developer is a free integrated development environment (IDE) that provides a comprehensive set of tools for database development, including SQL and PL/SQL editing, debugging, and tuning. In this report, we will walk you through the process of downloading Oracle SQL Developer 21.4.3.
System Requirements
Before downloading SQL Developer 21.4.3, ensure that your system meets the following requirements:
Downloading SQL Developer 21.4.3
To download SQL Developer 21.4.3, follow these steps:
Download Links
Installation
After downloading the software, follow the installation instructions for your platform:
Conclusion
In this report, we provided a step-by-step guide on how to download Oracle SQL Developer 21.4.3. We also included the system requirements and download links for each platform. If you encounter any issues during the download or installation process, refer to the Oracle SQL Developer documentation or contact Oracle Support.
If you want, I can provide:
You're looking to download Oracle SQL Developer 21.4.3!
Oracle SQL Developer is a popular, free integrated development environment (IDE) that provides a comprehensive set of tools for database development, including:
The 21.4.3 version of SQL Developer includes several new features and enhancements, such as:
New Features:
Enhancements:
To download Oracle SQL Developer 21.4.3, follow these steps:
Once you've downloaded the installer, follow the installation instructions to install SQL Developer on your machine.
You can download Oracle SQL Developer 21.4.3 directly from the official Oracle SQL Developer 21.4.3 Downloads page
. This version, released on March 3, 2022, is a maintenance update that includes important security fixes, notably for Apache Log4j (version 2.17.1). Download Options
Depending on your operating system, choose the appropriate package: Windows 64-bit (with JDK 8 included) : Best if you don't have Java installed. Windows 32-bit/64-bit : Requires an existing installation of Oracle JDK 8 or 11. : Requires Oracle JDK 8 or 11. : For Oracle Linux or Red Hat distributions. Key Requirements & Setup Java Version : This release requires Oracle JDK 8 or 11 (minimum 1.8 update 171). Installation
: SQL Developer does not use an installer; simply download the ZIP file and extract it into a clean, empty folder. download sql developer 21.4.3
: When you first launch the application, you will be prompted to provide the path to your JDK folder (e.g., C:\Program Files\Java\jdk1.8.0_181 Latest Version Note (April 2026)
While 21.4.3 remains available, the current stable version as of April 2026 is SQL Developer 24.3.1
. Oracle has transitioned primary development and new features to the Oracle SQL Developer Extension for VS Code ThatJeffSmith Oracle Database AI responses may include mistakes. Learn more Oracle SQL Developer Downloads 21.4.3
Oracle SQL Developer version 21.4.3 is a legacy release, as it has been superseded by much newer versions like 24.3.1 (released December 2024). While it remains a stable and free tool for managing Oracle Databases, most users should download the latest version to ensure compatibility with newer Java runtimes and security patches. Key Takeaways
Availability: You can find older versions, including 21.4.3, on the Oracle SQL Developer Downloads page under the "Previous Releases" section.
Performance: Version 21.4.x was noted for introducing improved support for Oracle Database 21c and fixing various UI bugs seen in the 20.x series.
System Requirements: This version typically requires Java 8 or 11. Newer versions (23.1+) have transitioned toward requiring Java 17 or 21.
Free to Use: Like all versions of Oracle SQL Developer, 21.4.3 is free for both development and production environments. Why choose 21.4.3 over newer versions? You might specifically look for 21.4.3 if:
Legacy Environment: You are working on an older machine that only supports Java 8/11.
Stability: You need a specific version that matches your team's documented workflow or a particular extension that hasn't been updated for the 24.x branch.
