The above will work, but I had better results following a pdf called 'Database Migration From Windows to Linux Using RMAN'. The basic concept is the same from Linux to solaris though.

PHP Code:
SQL> select * from v$db_transportable_platform
  2  where platform_name like 'Linux%' or
  3  platform_name like 'Solaris%';

PLATFORM_ID PLATFORM_NAME                       ENDIAN_FORMAT
----------- ----------------------------------- --------------
         10 Linux IA (32-bit)                   Little
         11 Linux IA (64-bit)                   Little
         13 Linux x86 64-bit                    Little
         17 Solaris Operating System (x86)      Little
         20 Solaris Operating System (x86-64)   Little 
As long as the endian is the same format, its simple. You use rman to convert the DBF's then ftp them onto the new server. Rename as you like, then rebuild the controlfile. The process even generates a script for you to recreate the controlfiles and start the database. The cool thing about it is you aren't destroying the original dbf's. It copies them into the new format.

Just giving you an alternative.

Jim