Originally posted by SANJAY_G
You may use record_size and records_total columns in v$controlfile_record_section to get the size of the controlfile. But for accurate size it is always advisable to see the size in OS.
Well Sanjay, IMHO those column values are in number (records) and not in bytes (size). So even if you want to calculate the controlfile size from the record_size or records_total, you cannot.