After installing Oracle SQL Developer 21.4.3, you need to configure it to connect to your Oracle database. Follow these steps:

Download the ZIP file (e.g., sqldeveloper-21.4.3.063.0100-x64.zip ).

A: The official MD5 checksum for sqldeveloper-21.4.3.063.0100-no-jre.zip is b344a7010e1ca76b6fe20696ebbb1b43 .

This happens if you downloaded the "No JDK" version and SQL Developer cannot find Java. To fix this, locate your sqldeveloper.conf file inside the sqldeveloper\sqldeveloper\bin directory. Open it with a text editor and update the line pointing to your Java home directory: SetJavaHome C:\Path\To\Your\jdk-11