copy file in oracle, utl_file.fcopy doesn't work for some type of file and the only way to copy a file is to do it as raw file. So here is an example.

copyfile.plsql

CREATE OR REPLACE PROCEDURE copyfile (in_director in varchar2, in_filename  IN VARCHAR2, out_directory in varchar2, out_filename  IN VARCHAR2)
 IS
   in_file       UTL_FILE.file_type;
   out_file      UTL_FILE.file_type;
   buffer_size   CONSTANT INTEGER := 32767;   -- Max Buffer Size = 32767
   buffer        RAW (32767);
   buffer_length INTEGER;
 BEGIN
   -- Open a handle to the location where you are going to read the Text or Binary file from
   -- NOTE: The 'rb' parameter means "read in byte mode" and is only available
   --  in the UTL_FILE package with Oracle 10g or later
   in_file := UTL_FILE.fopen ('IN_FILE_LOC', in_filename, 'rb', buffer_size);
   -- Open a handle to the location where you are going to write the Text or Binary file to
   -- NOTE: The 'wb' parameter means "write in byte mode" and is only available
   --  in the UTL_FILE package with Oracle 10g or later
   out_file := UTL_FILE.fopen ('OUT_FILE_LOC', out_filename, 'wb', buffer_size);
   -- Attempt to read the first chunk of the in_file
   UTL_FILE.get_raw (in_file, buffer, buffer_size);
   -- Determine the size of the first chunk read
   buffer_length := UTL_RAW.LENGTH (buffer);
   -- Only write the chunk to the out_file if data exists
   WHILE buffer_length > 0
   LOOP
      -- Write one chunk of data
      UTL_FILE.put_raw (out_file, buffer, TRUE);
      -- Read the next chunk of data
      IF buffer_length = buffer_size
      THEN
         -- Buffer was full on last read, read another chunk
         UTL_FILE.get_raw (in_file, buffer, buffer_size);
         -- Determine the size of the current chunk
         buffer_length := UTL_RAW.LENGTH (buffer);
      ELSE
         buffer_length := 0;
      END IF;
   END LOOP;
   -- Close the file handles
   UTL_FILE.fclose (in_file);
   UTL_FILE.fclose (out_file);
 EXCEPTION
   -- Raised when the size of the file is a multiple of the buffer_size
   WHEN NO_DATA_FOUND  THEN
     -- Close the file handles
     UTL_FILE.fclose (in_file);
     UTL_FILE.fclose (out_file);
 END;