Navigate to the official Oracle SQL Developer Downloads page.
While Oracle regularly releases newer iterations of its database tools, version 21.4.3 is frequently sought after by enterprise users.
Oracle SQL Developer is free for all use cases—development, production, and even commercial applications. You do not need a support contract or a license key. Oracle distributes it as a no-cost tool to encourage database adoption.
Oracle SQL Developer 21.4.3 is a highly stable, widely used release of Oracle's free graphical tool for database development. Whether you are a database administrator, data analyst, or software engineer, this version simplifies database browsing, object creation, SQL execution, and data migration. download sql developer 21.4.3
With the tool open, Alex was ready to talk to his database. He clicked the to create a new connection. He entered his credentials—username (like "system"), password, and the SID—and hit the "Test" button. A small "Success" message appeared, and just like that, he was connected to his tables and data. Why Version 21.4.3?
If you cannot make 21.4.3 work, consider:
Oracle SQL Developer 21.4.3 offers several key features and benefits, including: Navigate to the official Oracle SQL Developer Downloads page
If you already have an account, enter your credentials and sign in.
Before downloading, it helps to understand why version 21.4.3 remains a go-to environment for database professionals:
| Component | Requirement | | --- | --- | | | Windows 10/11 (64-bit), macOS 11+, Linux (x86_64) | | RAM | Minimum 2 GB (4 GB recommended) | | Disk Space | ~1.2 GB (plus workspace storage) | | Java JDK | Oracle JDK 11 or OpenJDK 11 (build 11.0.11+) | | Screen Resolution | 1024 x 768 minimum | You do not need a support contract or a license key
Extract the ZIP file and run ./sqldeveloper.sh from the extracted directory. Troubleshooting Common Issues
Recommended for Windows users. This architecture bundles the correct Java version, removing the need for separate manual Java configuration.
Note: If you need to save connection passwords, you must use at least to access required security jars. Operating Systems:
This release addresses numerous legacy bugs, memory leaks, and connection drops found in earlier 20.x and 21.x builds.