ORACLE PL/SQL : How to pass an exception into a procedure - oracle

Question

Is there a way to pass exception into a procedure to call "raise" after doing some actions to process exception. So that the outer code block will get the exact exception that was raised
Something like this:
begin
...
exception
when others then
error_handler( err );
end;
procedure error_handler ( err ) is
begin
/*
here some code to handle and log the exception...
*/
raise err;
end;
Or the only way is to pass SQLCODE and SQLERRM into the procedure and later call raise_application_error( SQLCODE, SQLERRM )?

Answer 1

If I understood you correctly, this is what you're asking.
Sample log table:
SQL> create table err_log
2 (program varchar2(30),
3 datum date,
4 sqlcode number
5 );
Table created.
Logging procedure should be an autonomous transaction so that you could commit in it, without affecting main transaction.
SQL> create or replace procedure error_handler
2 (p_program in varchar2, p_sqlcode in number)
3 is
4 pragma autonomous_transaction;
5 begin
6 insert into err_log (program, datum, sqlcode)
7 values (p_program, sysdate, p_sqlcode);
8 commit;
9 end;
10 /
Procedure created.
Another procedure (whose execution you're logging); it'll raise division by zero. See lines #8 and #9 which call the logging procedure and then just re-raise the error:
SQL> create or replace procedure p_test is
2 l_program varchar2(30) := 'P_TEST';
3 l_value number;
4 begin
5 l_value := 1 / 0;
6 exception
7 when others then
8 error_handler(l_program, sqlcode);
9 raise;
10 end p_test;
11 /
Procedure created.
OK, everything is set. Let's try it:
SQL> exec p_test;
BEGIN p_test; END;
*
ERROR at line 1:
ORA-01476: divisor is equal to zero --> this is result of RAISE in line #9
ORA-06512: at "SCOTT.P_TEST", line 9
ORA-06512: at "SCOTT.P_TEST", line 5
ORA-06512: at line 1
Log table contents:
SQL> select * from err_log;
PROGRAM DATUM SQLCODE
------------------------------ ------------------- ----------
P_TEST 01.11.2022 11:13:31 -1476
SQL>
You asked, literally:
How to pass an exception into a procedure?
You can't, as far as I can tell:
SQL> create or replace procedure error_handler_text
2 (p_err in exception) --> if this is what you asked
3 is
4 begin
5 null;
6 end;
7 /
Warning: Procedure created with compilation errors.
SQL> show err
Errors for PROCEDURE ERROR_HANDLER_TEXT:
LINE/COL ERROR
-------- -----------------------------------------------------------------
2/13 PLS-00103: Encountered the symbol "EXCEPTION" when expecting one
of the following:
out <an identifier> <a double-quoted delimited-identifier>
table columns long double ref char standard time timestamp
interval date binary national character nchar
The symbol "<an identifier> was inserted before "EXCEPTION" to
continue.
SQL>