2 SQL> declare 2 l_clob clob := '12345'; 3 begin 4 dbms_lob.write( l_clob, 2, 3, 'AB' ); 5 dbms_output.put_line( l_clob ); 6 dbms_lob.write( l_clob, 2, 9, 'CD' ); 7 dbms_output.put_line( l_clob ); 8 end; 9 / 12AB5 12AB5 CD PL/SQL procedure successfully completed. SQL> SQL> --