After downloading, do not just double-click. Verify the build number. Oracle uses a numeric pattern:
https://download.oracle.com/otn/java/sqldeveloper/sqldeveloper-20.4.1.407.0006-no-jre.zip
Legacy system support – Oracle 11g, 12c, and 18c environments that require JDK 8. Oracle Sql Developer Download 20.4.1
AddVMOption -Xmx1024M AddVMOption -XX:MaxPermSize=256M
Version 20.4.1 is no longer under standard Premier Support. Do not use it if your organization requires quarterly security patches. Use it only in air-gapped or legacy environments. After downloading, do not just double-click
For most versions, you simply unzip the downloaded folder to a location on your drive and run the sqldeveloper.exe (Windows) or sqldeveloper.sh (Linux) file.
If you are a Fortune 500 enterprise, consider using a supported version unless this exact build is certified with your proprietary internal framework. For most versions, you simply unzip the downloaded
: Users can browse database objects, run SQL statements, edit PL/SQL, and migrate third-party databases to Oracle. Installation Requirements Oracle SQL Developer Downloads 20.4.1