which is most important among Database files ,Control files, Redo logs?

• control files
  because to start and operate database successfully they are required.A control file is updated continuously by Oracle during database use, so it must be available for writing whenever the database is open. If for some reason the control file is not accessible, then the database cannot function properly.
  
• 9 years agoHelpfull: Yes(0) No(0)
• The most important of these are the database files where the actual data resides. The control files and the redo logs support the functioning of the architecture itself. All three sets of files must be present, open, and available to Oracle for any data on the database to be useable. Without these files, you cannot access the database, and the database administrator might have to recover some or all of the database using a backup, if there is one.
• 7 years agoHelpfull: Yes(0) No(0)