Hi, All!
Starting from ORDS 22 I do it simply:
1 Download latest version from Oracle site and unzip it somewhere.
2 Copy ords file (it comes without extension and begins with #!/bin/bash row) to previous $ORDS/bin catalog.
2 Copy ords.exe file to previous $ORDS/bin catalog.
3 Copy ords.war file to previous $ORDS catalog.
And it works. I keep $ORDS/config directory untouched, and ignore README's and examples directories.
Which way do you prefer?