set echo off
set term off
store set backupenv replace
set term on

set serveroutput on

DECLARE
iblock VARCHAR2(50) := '&&1' ;
imode VARCHAR2(1) :='&2';
x       NUMBER;
digits# NUMBER;
results NUMBER := 0;
file#   NUMBER := 0;
block#  NUMBER := 0;
cur_digit CHAR(1);
cur_digit# NUMBER;
BEGIN
      IF upper(imode) = 'H' THEN
           digits# := length( iblock );
           FOR x  IN 1..digits#  LOOP
                cur_digit := upper(substr( iblock, x, 1 ));
                IF cur_digit IN ('A','B','C','D','E','F')  THEN
                     cur_digit# := ascii( cur_digit ) - ascii('A') +10;
                ELSE
                     cur_digit# := to_number(cur_digit);
                END IF;
                results := (results *16) + cur_digit#;
           END LOOP;
      ELSE
           IF upper(imode) = 'D' THEN
                results := to_number(iblock);
           ELSE
                dbms_output.put_line('H = Hex Input ... D = Decimal Input');
                RETURN;
           END IF;
      END IF;

      file#  := dbms_utility.data_block_address_file(results);
      block# := dbms_utility.data_block_address_block(results);

      dbms_output.put_line('.');
      dbms_output.put_line( 'The file is ' || file# );
      dbms_output.put_line( 'The block is ' || block# );
END;
/