SQL & PL/SQL :: Creating Item_codes In Our Master Table Called Om_item

we are creating item_codes in our master table called om_item ,and then at one point of time every day we are shipping these newly created items based on date and tmie stamp as items.sql to our brance office and the person there will run these scripts there.Actually there are two persons involved in this process and i want to remove this manual intervention.All i need is to create a trigger for this insert statements and write it in text file as .sql.

create table om_item (item_code varchar2(20), item_name varchar2(60),item_cr_dt date)
insert into om_item values ('a','aaaa',sysdate);
commit;
insert into om_item values('b','bbbb',sysdate+1);
commit;