Access oracle database from control file
A control file is a metadata file and lists some system configuration settings and all the datafiles and their paths.  A typical file is quite small and does not contain any user data.

You need a datapump export or, even better, as suggested by Philᵀᴹ, an RMAN backup.  The RMAN backup is preferable as you will not have to create users and tablespaces first which you would with an export.