Exception statement for looping query

Question

Hi this is my query to date:
declare   
    cursor curs is
     select name_id_no, incident_date
     from MICHAELC.Food_Nov_01_final t
     --where rownum < 6
     for update of cat_latest;
    w_cat_latest        number(4,0);
    w_cat_latest_date   date;
    w_cat_max           number(4,0);
    w_cat_max_date      date;
    w_cat_min           number(4,0);
    w_cat_min_date      date;
begin
    for i in curs loop
        -- get latest cat date
        select max(cat_score_date) into w_cat_latest_date
        from rbn_cat
        where customer_no = i.name_id_no
        and   cat_score_date <= i.incident_date;
        -- get latest cat score
        select cat_score into w_cat_latest
        from rbn_cat
        where customer_no = i.name_id_no
        and cat_score_date = w_cat_latest_date
        and rownum = 1;
        --get maximum cat score
        select max(cat_score) into w_cat_max
        from rbn_cat
        where customer_no = i.name_id_no
        and   months_between(i.incident_date,cat_score_date) between 0 and 12;
        --get maximum cat date
        select cat_score_date into w_cat_max_date
        from rbn_cat
        where customer_no = i.name_id_no
        and   cat_score = w_cat_max
        and   months_between(i.incident_date,cat_score_date) between 0 and 12
        and   rownum = 1;
        --get minimum cat score
        select min(cat_score) into w_cat_min
        from rbn_cat
        where customer_no = i.name_id_no
        and   months_between(i.incident_date,cat_score_date) between 0 and 12;
        --get minimum cat date
        select cat_score_date into w_cat_min_date
        from rbn_cat
        where customer_no = i.name_id_no
        and   cat_score = w_cat_min
        and   months_between(i.incident_date,cat_score_date) between 0 and 12
        and   rownum = 1;
        update MICHAELC.Food_Nov_01_final
            set cat_latest = w_cat_latest
               , cat_latest_date = w_cat_latest_date
               , cat_max  = w_cat_max
               , cat_max_date = w_cat_max_date
               , cat_min    = w_cat_min
               , cat_min_date = w_cat_min_date
        where current of curs;
    end loop;
end;
I receive the following error:
Error report:
ORA-01403: no data found
ORA-06512: at line 37
01403. 00000 - "no data found"
*Cause:   
*Action:
I want to use an exception statement, something along the lines of
exception when no_data_found then
            w_cat_latest_date     := NULL;
            w_cat_latest          := NULL;
            w_cat_max             := NULL;
            w_cat_max_date        := NULL;
            w_cat_min             := NULL;
            w_cat_min_date        := NULL;I'm just not really sure how to use the exception statement correctly and if it is the best way to handle this error. Thank-you for your time and help.
Banner:
Oracle Database 11g Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
"CORE 11.2.0.2.0 Production"
TNS for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production

Answer 1

Like this;-
declare   
    cursor curs is
     select name_id_no, incident_date
     from MICHAELC.Food_Nov_01_final t
     --where rownum < 6
     for update of cat_latest;
    w_cat_latest        number(4,0);
    w_cat_latest_date   date;
    w_cat_max           number(4,0);
    w_cat_max_date      date;
    w_cat_min           number(4,0);
    w_cat_min_date      date;
begin
    for i in curs loop
        -- get latest cat date
BEGIN
        select max(cat_score_date) into w_cat_latest_date
        from rbn_cat
        where customer_no = i.name_id_no
        and   cat_score_date <= i.incident_date;
EXCEPTION
when no_data_found then
            w_cat_latest_date     := NULL;
END;       
BEGIN
        -- get latest cat score
        select cat_score into w_cat_latest
        from rbn_cat
        where customer_no = i.name_id_no
        and cat_score_date = w_cat_latest_date
        and rownum = 1;
EXCEPTION
when no_data_found then
            w_cat_latest
     w_cat_latest:= NULL;
END;       
/*   you get the idea
        --get maximum cat score
        select max(cat_score) into w_cat_max
        from rbn_cat
        where customer_no = i.name_id_no
        and   months_between(i.incident_date,cat_score_date) between 0 and 12;
        --get maximum cat date
        select cat_score_date into w_cat_max_date
        from rbn_cat
        where customer_no = i.name_id_no
        and   cat_score = w_cat_max
        and   months_between(i.incident_date,cat_score_date) between 0 and 12
        and   rownum = 1;
        --get minimum cat score
        select min(cat_score) into w_cat_min
        from rbn_cat
        where customer_no = i.name_id_no
        and   months_between(i.incident_date,cat_score_date) between 0 and 12;
        --get minimum cat date
        select cat_score_date into w_cat_min_date
        from rbn_cat
        where customer_no = i.name_id_no
        and   cat_score = w_cat_min
        and   months_between(i.incident_date,cat_score_date) between 0 and 12
        and   rownum = 1;
        update MICHAELC.Food_Nov_01_final
            set cat_latest = w_cat_latest
               , cat_latest_date = w_cat_latest_date
               , cat_max  = w_cat_max
               , cat_max_date = w_cat_max_date
               , cat_min    = w_cat_min
               , cat_min_date = w_cat_min_date
        where current of curs;
    end loop;
end;
/