Yeah, I thought about that, but looking for any info from the dictionary if possible. I have to go back to couple of years worth. I am in the processes of investigating how the database has been growing during the last couple of years. I thought, adding new datafiles would directly indicate the growth as we add datafiles only when required.
Checked v$database. It gives you one line back with database creation history.
I checked the controlfile. It gives me the list of datafiles, but not the creation time.
Looks like I have to just go thru the alert log to get this info.