Oracle Critical File Protection

-- Step 1: Collect the file locations for control, redo log, and data files:
-- Step 2: Check file permission

Select 'Control Files: '||value from v$parameter where name= 'control_files';
Select 'Control Files: '||value from v$parameter where name= 'spfile';
select 'Logfile: '||member from v$logfile;
select 'Datafile: '||name from v$datafile;