Oracle RMAN Back-up files in red hat can be read in windows

You have to initiate the duplicate from the target database to be able to connect to the not mounted target database. I suggest you to downgrade the oracle version on the 64 bit machine. The easiest way to do this will be to install 11.1.0.6.0 version on the 64-bit server into a separate oracle home and perform the duplicate. You can upgrade the database after duplicate and switch it to the 11.1.0.7.0 home.

The error you are getting on the 32-bit database seems to be a connection problem to the database. The target instance is not mounted and you cannot connect to is via SQLnet.

When performing the duplicate form 64 bit system, please make sure that you are using username/password in the connection string to the target database and not the system authentication.

Best regards, Yuri

Ok, so here is how you duplicate a database from backup:

• make backup (datafiles, archivelogs, controlfile)
• transfer backup to destination host, to exactly same path, not FRA or anything else (creating backup to a shared location also works)
• create parameterfile and start the destination instance in NOMOUNT mode
• rman target sys@source auxiliary sys@destination
• RMAN> duplicate target database to ...

You don't catalog backups at destination site, because you don't mount the database (controlfile), you don't even have the controlfile there. The controlfile will be restored from the backup, and that controlfile will contain the backup entries, that were transferred to the destination host to the same path as on source.