If you are coming from a much older version (e.g., 18c or 19c), SQL Developer will ask if you want to import your previous user settings.
Once downloaded, right-click the zip file and choose "Extract All". It is best practice to extract this to a permanent location, such as C:\Program Files\sqldeveloper .
Oracle SQL Developer 21.4.3 is a highly stable, widely used release of Oracle's flagship graphical tool for database management. Whether you are a database administrator, a software developer, or a data analyst, securing a verified copy of this specific version ensures compatibility with legacy systems and a reliable development environment.
If version 21.4.3 experiences sluggishness, open your sqldeveloper.conf file (located within the sqldeveloper\bin directory) and increase the maximum memory allocation by modifying or adding the following lines: AddVMOption -Xms256m AddVMOption -Xmx1024m Use code with caution. Missing TNS Connections
: There is a specific download for Windows that includes an embedded JDK 8, which simplifies installation as no separate Java setup is needed. oracle sql developer download 2143 download verified
Seamlessly connects to older Oracle Database versions (such as 11g and 12c) that may experience connection anomalies on newer software iterations.
Search for the . Because 21.4.3 is a previous release, it resides in the archive section rather than the main download page. Locate the 21.4.3 section of the release table. Choosing the Correct Architecture Package Operating System Package Type Includes JDK? Recommendation Windows 64-bit Windows 64-bit with JDK 8 included
Get-FileHash .\sqldeveloper-21.4.3.063.0100-x64.zip -Algorithm SHA256 Use code with caution.
: SQL Developer does not use a traditional setup wizard. Installation consists of unzipping the downloaded file into an empty folder and launching sqldeveloper.exe . Technical Context and Use Cases If you are coming from a much older version (e
Extract the downloaded zip file into a permanent directory (e.g., C:\Program Files\Oracle\ or C:\Oracle\ ). Avoid extracting directly to your desktop. Open the extracted sqldeveloper folder. Double-click sqldeveloper.exe to launch the application. Extract the zip archive.
Edit the sqldeveloper.conf file found in the sqldeveloper\bin directory. Adjust the memory allocation parameters ( AddVMOption -Xms and AddVMOption -Xmx ) to grant the application more RAM.
: For macOS and specialized client files, Oracle uses digital signatures that the operating system verifies upon launch to confirm the software hasn't been modified. System Requirements
Compare the 64-character output string against the SHA-256 hash listed on the Oracle website. If they match perfectly, your file is authentic and uncorrupted. How to Verify on macOS / Linux (Terminal) Open your . Navigate to the directory containing your file: cd ~/Downloads Use code with caution. Run the following command: On macOS: shasum -a 256 sqldeveloper-21.4.3.063.0100-macosx.app.zip Use code with caution. On Linux: sha256sum sqldeveloper-21.4.3.063.0100-no-jre.zip Use code with caution. Oracle SQL Developer 21
This is the largest download but offers the smoothest setup experience. Windows 64-bit (No JDK included)
It seamlessly connects with older Oracle Database versions (such as 11g and 12c) while fully supporting modern deployments.
Whether you need assistance configuring for remote database connections. Share public link
This comprehensive guide walks you through the steps to download Oracle SQL Developer 21.4.3 safely, choose the correct architecture, and verify your download using SHA-256 checksums to ensure file integrity. Why Choose Oracle SQL Developer 21.4.3?
Follow these steps to securely obtain and install the software. 1. Requirements Before Downloading
: The macOS distribution is properly signed for compatibility with modern OS versions like Big Sur, preventing security warnings.