Are you using WINDOWS?
It looks like your steps are right:
- create driectories for CLNE database
- create pfile of CLNE( two converts)
- create password file is exact as your stated
BUT FOR WINDOWS, BESIDES ABOVE (UNIX STEPS)
- oradim -new -sid CLNE -intpwd CLNE
then start nomount CLNE, start connect target/catalog/auxiliary and
run duplicate target database to CLNE command.