Transaction in stored procedure

Question

I have a stored procedure like this:
procedure test() as
begin
insert into table1.....
insert into table2......
insert into table3....
exception
when others then
roolback;
end;
I have 3 question:
1) it is correct my code? I want that in case of error in any insert, all the insert are rollback
2)It is necessary to catch the exception or there is the stored procedure that automatically open transaction and to do commit or roolback?
3)If error happen in second insert, the code jump to the exception or before execute the third insert and then go to the exception code?
Thank you.
Sara.

Answer 1

I have a stored procedure like this:
procedure test() as
begin
insert into table1.....
insert into table2......
insert into table3....
exception
when others then
roolback;
end;
I have 3 question:
1) it is correct my code? I want that in case of
error in any insert, all the insert are rollbackIf an error happens during insert, the rows that inserted in the proc will be rolled back.
2)It is necessary to catch the exception or there is
the stored procedure that automatically open
transaction and to do commit or roolback?It depends on your business rule. If your rules says that in case of any exception all work will ne rolled back, you will do as you mentioned. But ,usally, when an exception happens you can open an automus transaction to log the error in somewhere-DB-
3)If error happen in second insert, the code jump to
the exception or before execute the third insert and
then go to the exception code?
When an exception thrown in a program block, the exception will be propagated until it will cached. Suppose you have a function that call your procedure. If you do not handle the exception, the exception will propagated caller function. If function also could not handled it, it will be thrown. Or sometimes you can wrap up the exception with your business rules.
Regards...