HELP CHANGE PASS IN FORMS NOT ORACLE PASSWORD

Question

HELP MAM/SIR newbie me
I created table
password and username
password="emp"
username="enter"
iwant to put change password.. put two text item.." oldpassword" and "newpassword" then 1 button
what would be the code for this change item plz help newbie me in oracle.. .
HELP ME PLZZ SIR/MAM .........................

Answer 1

try this code.. whats the result?
declare
vc_pwd varchar2(50);
begin
select passname
into vc_pwd
from logg
where username = 'd';
if vc_pwd = :block2.oldpassword then
update logg
set passname = :block2.newpassword
where username ='d';
else
message('Wrong password orvided');
message('Wrong password orvided');
end if;
commit;
end;
--block2 is ctrl block..,no?