AFAIK, no. You should use RMAN restore to keep it OMF.
With DBMS_TRANSFER _you_ control the naming. Thus, no OMF.
On 11/9/06, Ebadi, Abdul <Abdul.Ebadi@(protected):
> Does anyone know how to copy an Oracle-managed ASM datafile using
> DBMS_FILE_TRANSFER.COPY_FILE keeping the status of the file as
> oracle-managed after the copy/rename? We are get error ORA-15046
> trying to do this. We can copy the file to another name and it works just
> fine, but the problem is it is no longer an oracle-managed file, which is
> not what we want. Any suggestions?
The Pythian Group
Sr. Oracle DBA