We are having RMAN incrementally updated backups on production (verions 10205).
Could you please let me know the steps to duplicate test database (different server,different filesystems,different name) using catalog database?
Yes, you can DUPLICATE to another host (running the same OS, platform) with a different filesystem layout. You need to use the DB_FILE_NAME_CONVERT parameter to specify the mapping of filesystems. E.g. to change /u01/mydb/system01.dbf to /mnt1/clndb/system01.dbf, DB_FILE_NAME_CONVERT would be set to