For 10gR2 database, if source and target database have same Endian format, we can use rman convert database to migrate database cross-platform.

My question is, convert database command will generate rman script convertscript.rman......

this script will convert all data files . When I did these migration, it is works fine.......

Someone tell me, there is no need to convert user data file. Only convert system file and undo files. So I did, database migrated without convert user data files, I checked database, it lworks fine also.

No, I want to find oracle document to support this?

Someone told me it is in oracle note. Any one know this note number?