Compare the output against the hash listed on the Oracle archive page. If they match, the file is genuine.
If you need the exact build with a specific patch number: download sql developer 21.4.3
It requires Oracle Java 8 or 11 (minimum 1.8.0_171). If you download the "Windows 64-bit with JDK included" bundle (approx. 436 MB), the Java environment is already configured for you. Compare the output against the hash listed on
SQL Developer 21.4.3 supports importing connections and preferences from previous versions. download sql developer 21.4.3
It fixed a significant performance bug where the logic used to determine ORACLE_HOME on Windows caused extreme delays during query and script execution.
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