Clone Database in ASM Warning

While cloning database on a different server, we may get a warning when using ASM filesystem.

We should not set (dblog)_file_name_convert as Note:380449.1 says. According to Oracle,as long as diskgroup name is not changed between primary and standby (e.g. remains as DATA or FRA)and OMF is used, the duplicate command automatically creates path +diskgroup/db_unique_name, e.g.,+DATA/BOSTON. Furthermore, if OMF is used, control_files does not need to be specified in standbypfile or spfile; duplicate will figure out the path.

So make sure, you have correct db_unique_name in init.ora file and rman will take care of putting in the right location.