I am trying to load the Multiple files names & Autonumber to oracle table T1 which is further loaded the auto-number with data to target table TRG. My problem is when the same name file comes again due to size then load it again. & also don't insert Target (TRG) table rows with same data while insert the only those records/rows which are not in Target Table(TRG) .. Is this standard approach. becoz in this way I thing loading Performance speed will b down??
Any other or best recommended approach???/