Serious date problem

Question

I am using Form 6i.
I am getting serious date problem.
The MM/DD/RRRR is converted to DD/MM/RRRR and the result is false record.
How to avoid this serious problem. I am very shocked to find this error after few hours of brainstorming session.
I am using following query to create cursor
[htm]     CURSOR cur_first IS SELECT      a.item_code,
     b.item_description,
     a.lot_no,
     d.name model,
     c.vendname,
     date_of_purchase,
     warrenty_upto,
     quentaty,
     rate,
     pc_type,
     TO_DATE(decode(warrenty_flag_yn,
                    'W', TO_DATE(warrenty_upto),
                    'A', TO_DATE('31-MAR-'||v_year),
                    'X', TO_DATE('31-MAR-'||v_year)),'DD-MM-RR') AS amc_date
     FROM      pc_item_procurement_history a,
                    pc_item_master b,
                    pc_vendor_master c,
                    pc_model_master d
     WHERE a.item_code= b.item_code
     AND a.modelcode=d.modelcode
     AND a.vendcode=c.vendcode
     AND (b.item_description LIKE '%'||:blk_main.item_name||'%' OR :blk_main.item_name IS NULL)
     AND (TO_DATE(a.warrenty_upto,'DD-MM-RR') <= :blk_main.to_date OR :blk_main.to_date IS NULL)
     AND warrenty_flag_yn='W'
     ORDER BY b.item_description;
/pre][html]
Thanks and regards,
Vikas                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

I've just noticed something in the where clause that makes all this a lot easier.
     CURSOR cur_first IS SELECT      a.item_code,
     b.item_description,
     a.lot_no,
     d.name model,
     c.vendname,
     date_of_purchase,
     warrenty_upto,
     quentaty,
     rate,
     pc_type,
     warrenty_upto AS amc_date
     FROM      pc_item_procurement_history a,
                    pc_item_master b,
                    pc_vendor_master c,
                    pc_model_master d
     WHERE a.item_code= b.item_code
     AND a.modelcode=d.modelcode
     AND a.vendcode=c.vendcode
     AND (b.item_description LIKE '%'||:blk_main.item_name||'%' OR :blk_main.item_name IS NULL)
     AND (a.warrenty_upto <= :blk_main.to_date OR :blk_main.to_date IS NULL)
     AND warrenty_flag_yn='W'
     ORDER BY b.item_description;BUT...
Is Warrenty_upto really a date column? You say it is "stored as m/d/yyyy" but a date is not stored with a format in oracle - it's just a date and the format is applied when you retrieve the data.
In sql*plus if you Describe the table you can see the column type. If you select the data you only ever get a string.
I'm assuming :blk_main.to_date is a date.