When working with Oracle databases, having the right Integrated Development Environment (IDE) is crucial. Oracle SQL Developer remains the gold standard—free, feature-rich, and constantly evolving. However, not every organization or developer wants the very latest version. Sometimes, you need a specific, proven release for compatibility with legacy systems, internal documentation, or established team workflows.
Version 21.4.3 is one such milestone. It represents a stable, mature build from the 21.x release cycle, known for its robust JSON support, REST data services enhancements, and reliable migration tools. If you have landed on this page searching for "download sql developer 21.4.3", you likely need this exact version.
This article will walk you through everything: from locating the correct files to verifying the download and performing a clean installation on Windows, macOS, and Linux.
Select the correct file for your operating system:
| Platform | Recommended File | Notes |
|----------|----------------|-------|
| Windows | sqldeveloper-21.4.3-...-x64.zip | Choose the version with JDK 11 included to avoid manual Java setup. |
| macOS | sqldeveloper-21.4.3-...-macosx.dmg | Works on both Intel and Apple Silicon (via Rosetta 2). |
| Linux | sqldeveloper-21.4.3-...-no-jre.zip | You must have JDK 11 installed separately. |
Click the file name to begin downloading. You may need to accept the Oracle Technology Network License Agreement.
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.
However, if you specifically need version 21.4.3—often required for certain legacy environments like Oracle Forms 12.2.1.19— 1. Official Download Link
You can find the direct downloads for version 21.4.3 on the Oracle SQL Developer 21.4.3 Downloads page. Windows (32-bit/64-bit) Requires separate JDK 8 or 11 Mac OSX Requires JDK 8 or 11 Linux RPM Requires JDK 8 or 11 Other Platforms Includes "no-jre" zip used for manual upgrades 2. Pre-installation Requirements download sql developer 21.4.3
Java Development Kit (JDK): Version 21.4.3 requires Oracle Java 8 or 11 (minimum 1.8 update 171).
Permissions: You may need administrative privileges to extract files and run the executable. 3. Installation Steps
Oracle SQL Developer version 21.4.3 is a critical maintenance update released in March 2022 to address specific performance and security issues found in the 21.4 series. Key Fixes in 21.4.3
The primary reason to download this specific version was to resolve two significant issues:
Performance Restoration: Fixed a bug where SQL Developer would execute REGEDIT on Windows to find ORACLE_HOME locations, causing massive slowdowns for queries and scripts.
Security Update: Updated the Log4J library (matching the 2.17.1 version) to address vulnerabilities that were a major industry concern during its release. How to Download and Install
Official Source: Download the installation package directly from the Oracle SQL Developer 21.4.3 Archive Page.
JDK Requirements: This version requires Java 8 or 11 (minimum 1.8 update 171).
Windows: Choose the "Windows 64-bit with JDK 8 included" bundle for a simpler setup.
Mac/Linux: You must have a compatible JDK pre-installed. For Mac, download the OS X distribution, which is digitally signed for modern macOS security. How to Download SQL Developer 21
Clean Installation: It is highly recommended to unzip the file into a fresh, empty folder rather than over-installing on an old version. Pro-Tips for 21.4.3
Environment Variables: If you previously added an $ORACLE_HOME environment variable as a workaround for performance issues in 21.4.2, this fix in 21.4.3 makes that variable optional again.
Connection Compatibility: This version supports Oracle Database 19c and higher for OCI "Thick" connections.
Troubleshooting: If the application fails to open on Windows, clearing the system21.4.3 folder in your AppData\Roaming directory often fixes corrupted configuration states.
Software Download Report
Software Name: Oracle SQL Developer Version: 21.4.3 Download Report
Introduction: This report provides an overview of the download process for Oracle SQL Developer version 21.4.3.
Download Details:
Download Steps:
sqldeveloper-21.4.3.zip).Download Metrics:
sqldeveloper-21.4.3.zipInstallation and Verification:
C:\sqldeveloper).sqldeveloper.exe).Conclusion: The download and installation of Oracle SQL Developer version 21.4.3 were successfully completed. The software is now ready for use.
Recommendations:
Troubleshooting: If issues are encountered during the download or installation process, refer to the Oracle Support website or contact Oracle Support for assistance.
Approved By: [Insert Name]
Date: [Insert Date]
Go to the Oracle SQL Developer download archive. Use this direct path:
Oracle SQL Developer is a free, integrated development environment that simplifies the development and management of Oracle Database in both standard and cloud deployments. Version 21.4.3 represents a specific patch set release within the 21.4 cycle, noted for critical bug fixes and stability improvements over the initial 21.4 release. As legacy tools such as SQL*Plus become less suitable for modern GUI-centric workflows, ensuring the correct deployment of SQL Developer is essential for operational efficiency. This paper serves as a definitive reference for technical teams requiring the deployment of this specific version.
Solution: You are likely using Java 8 or Java 17. Uninstall other Java versions or edit the sqldeveloper.conf file (located in the ide/bin folder) to point specifically to JDK 11.