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 browsing database objects, running SQL statements, or administering a database, this specific version offers a balance of modern features and reliable performance.

Get-FileHash sqldeveloper-21.4.3.063.0100-x64.zip -Algorithm SHA1

: Oracle recently issued a critical security advisory (January 2024) that includes approximately 389 security patches across their product lines. Regularly updating to the latest version is crucial for security.

The terminal will output the checksum. Verify it against the official value on the Oracle website.

Do you need assistance setting up or wallet connections for cloud databases? Share public link

: Use the command certutil -hashfile SHA256 in the command prompt to generate a hash to compare against Oracle's provided value.

The official download for Oracle SQL Developer 21.4.3 is verified and available through the Oracle SQL Developer Downloads 21.4.3 page. This release, published on March 3, 2022

Select the root folder of the JDK (not the bin folder) and click .

Compare the resulting hash output from your terminal/PowerShell to the SHA-256 string copied from Oracle's website. If they match exactly, your download is verified and safe . If they do not match, delete the file immediately and attempt the download again. Step 3: Installation and Configuration

This error is almost always caused by Windows Installer issues or conflicting Java versions . Oracle SQL Developer comes in two main packages, and choosing the wrong one is the most common cause of Error 2143: