How can I retrieve the temporary backup which is done just before ios 5 update?

Question

How can I retrieve the temporary backup which is done just before ios 5 update? Because I set up wrongly as new iphone and want to retrive the backup before the ios 5 update. But I never sync to itune before. When I find the previous backups, I can find only one backup which is done after ios 5 update.

Answer 1

I've never faced this case myself, but from the documentation it would seem that the INSTEAD OF DELETE is also a FOR EACH ROW trigger. Therefore, you don't really have to worry about the actual "where" clause of the original "delete" operation: Oracle has it all parsed for you, so you just need to redirect, in turn, each view record being deleted to the appropriate table.
In extenso: for your
delete vt12 where m = 1;
=> the INSTEAD OF trigger fires once for all records in vt12 where m=1, and I would guess that you trigger code should look like:
begin
delete from t1 where m = :old.m and n = :old.n and o = :old.o;
delete from t2 where a = :old.m and b = :old.n and c = :old.o;
end;
It's a bit of overkill compared to the "where" clause of the original "delete" statement, but it should do the job...
BTW, if by any luck you do have some primary key on tables t1 and t2 (say: columns o and c respectively), then obviously you can make the thing simpler:
begin
delete from t1 where o = :old.o;
delete from t2 where c = :old.o;
end;
HTH - Didier