Size of a Oracle datafile (and temp datafile)

SELECT file_name, autoextensible, round(bytes/1024/1024,2) as bytes_in_mb,
round(maxbytes/1024/1024,2) as maxbytes_in_mb
FROM dba_data_files
WHERE file_name like '%datafile%';

SELECT file_name, autoextensible, round(bytes/1024/1024,2) as bytes_in_mb,
round(maxbytes/1024/1024,2) as maxbytes_in_mb
FROM dba_temp_files
WHERE file_name like '%tempdatafile%';