| Issue | Why It Happens | Verified Fix |
|-------|----------------|---------------|
| Hash mismatch | Corrupted download or MITM attack | Re-download using a wired connection, disable VPN temporarily |
| "Download not verified" warning from browser | Chrome/Edge SmartScreen flags older executables | Ignore only if SHA-256 matches Oracle’s hash |
| File missing from Oracle archive | Oracle removed build 2143 | Use version 21.4.3.1842 (previous build) or check My Oracle Support (MOS) |
| Java not found (No-JRE version) | You downloaded the zip without JDK | Install Oracle JDK 11 or OpenJDK 11, set JAVA_HOME |
This is the most stable way to run SQL Developer and avoids the installer engine that throws Error 2143. oracle sql developer download 2143 download verified
To ensure you are downloading a safe, uncorrupted, and verified version of Oracle SQL Developer, you should only download from the official Oracle Technology Network (OTN). | Issue | Why It Happens | Verified
| File | SHA-256 Hash |
|------|---------------|
| SQLDeveloper-21.4.3.2143-x64.exe | 3f7b2a9c4e6d1f8b0c3a5e7d9f2b1a4c6e8d0f2b3a5c7e9d1f3b5a7c9e1d3f5b (Example – obtain official from Oracle) |
| sqldeveloper-21.4.3.2143-no-jre.zip | 2a4b6c8d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2c3d4e5f6a7b | This is the most stable way to run
To get the actual, current hashes:
https://www.oracle.com/tools/downloads/sqldev-downloads.html
Then look for "Archive" or navigate to:
https://www.oracle.com/database/technologies/appdev/sqldev-archive-downloads.html
After downloading, verify the file integrity to ensure it hasn’t been tampered with.