just to confirm,

spool myfile.sql
set trimspool on
set pages 0
set linesize 222
select 'alter database rename file ''' || file_name || ''' to d''' || substr(2,len(file_name),file_name) | ';'
select 'alter database rename file ''' || member || ''' to d''' || substr(2,len(member),member) | ';'
spool off


Myfile = file that I will convert to an sql file generated by the V$datafile query

file_name = is a field in the myfile query right??

d''' - is this my drive

Or this is the script I need to run , I would just be editing the converted file.

To you all thanks for help, and Merry Christmas