One doubt regarding varrays

Question

i want to know how the memory allocation is done at runtime when a pl/sql block involving a varray type is run.
e.g.
create or replace procedure temp_test1 is
type array1 is varray(100) of temp1%rowtype;
v_array1 array1 := array1(null);
begin
while (no_break) loop
v_array1.extend;
end loop;
end;
here does it by default occupy memory reuired for 100 records of table temp1 at the run time?
or the memory is allocated only when i "extend" the varray type variable.
cheers

Answer 1

Hi,
from the database documentation:
" The size of a stored varray depends only on the current count of the number of elements in the varray and not on the maximum number of elements that it can hold. The storage of varrays incurs some overhead, such as null information. Therefore, the size of the varray stored may be slightly greater than the size of the elements multiplied by the count."
Frank