Using “nested” transactions in oracle

Question

I have troubles with transactions in Oracle. I have some procedures like this:

create or replace procedure myschema.DataSave(v_value IN NUMBER)
as
begin

SET         


        

Answer 1

Exceptions are restricted to the program group they are raised in.

create or replace procedure myschema.DataSave(v_value IN NUMBER)
as

ex_dml_error EXCEPTION;
begin


begin
insert/update/delete...
exception 
    when OTHERS then ex_dml_error;
end;

COMMIT;

EXCEPTION 
   WHEN ex_dml_error THEN
     ROLLBACK;
end;
/