Public exception handler in database package

Question

I'm working on Oracle 10 g; I have a package with 10 functions, instead of writing exception for each individually is there is a way to do the same exception handler in all without repeating the exception handler in the 10 function (my exception handler is the same for the 10 function)

Answer 1

It would depend on how you are using the functions, and what exactly your exception handler does.
If, for example, your handler for no_data_found does a specific select statement, then you could put this statement in another function and call that function in the exception handler of each of the 10 functions. Note that you would need to catch the exception in eacg function, but the common code would be in one place. Something like:
FUNCTION error_func RETURN NUMBER IS
BEGIN
   SELECT other_stuff INTO var;
   RETURN var;
END;
function1 RETURN NUMBER IS;
BEGIN
   SELECT stuff INTO var;
   RETURN var;
EXCEPTION
   WHEN NO_DATA_FOUND
      effor_func;
END;
function2 RETURN NUMBER IS;
BEGIN
   SELECT stuff INTO var;
   RETURN var;
EXCEPTION
   WHEN NO_DATA_FOUND
      effor_func;
END;
function3 RETURN NUMBER IS;
BEGIN
   SELECT stuff INTO var;
   RETURN var;
EXCEPTION
   WHEN NO_DATA_FOUND
      effor_func;
END;If you always run all 10 functions in sequence, then you could make a wrapper to call the functions, and catch exceptions in the wrapper. Something along the lines of:
FUNCTION wrapper RETURN NUMBER IS;
BEGIN
   function1;
   function2;
   function10;
EXCEPTION
   WHEN NO_DATA_FOUND THEN
      do something;
END;As constructed here, the wrapper wil not know which function errored nor will it continue running the other functions after getting an error.
John