SQL>
SQL> create table t ( r raw(10) );
Table created.
SQL>
SQL> insert into t values ( utl_raw.cast_to_raw('helloWorld' ) );
1 row created.
SQL>
SQL> select utl_raw.substr(r,2,3) r1, hextoraw(substr(r,3,6)) r2 from t
2
SQL> drop table t;
Table dropped.
SQL>