(For Linux, change the URL to .../oracle19c-linux-downloads.html ) Scroll down to "Oracle Database 19c Client (19.3) for Microsoft Windows x64 (64-bit)" (or your OS).
You will see two main files:
After installing 19.3, immediately apply the latest from Oracle's patch site (requires support contract) or re-download a newer 19.x client from the same page (Oracle occasionally updates the zip). 7. Verification after download Check the SHA-256 checksum (example for Windows 19.3): oracle client 19c download