How to restore backup archived files

hi folks
i have backup the archived files ,now just for educational purpose i want to back up/restore database from these archived files what steps i will take,i read that control files should also be back up is it true if it is then why control files should be backed up..
if i have archive files and control files then what i will take step to restore the database after failure please tell me some steps.
umaisi
tks & regards

Now I'm eager to know also,if I have my weekly cold
backup,which is the datafiles,controlfiles and
redologs, and I do export bckup for my data
daily.and if the db crashes, what r the steps for me
to restore my data.will I be able to restore it upto
the date I took the last export? we dnt have archive
on and the RMAN is not working for past 10 months.You can use the colde backup to restore your database,
then truncate or drop user tables,
then use your daily export data to get the newest data.
HTH

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