Capturing trace of exception

Question

Suppose following stored procedure:
PROCEDURE TEST_PRC
IS
BEGIN
RAISE VALUE_ERROR;
END;
If I call this procedure in Sql*Plus, I get:
BEGIN test_prc; END;
ERROR in line 1:
.ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "SCH_PERSONEN.TEST_PRC", line 4
ORA-06512: at line 1
I can see exactly on which line the exception was raised: line 4.
I can see this linenumber also in Sql*Navigator or in de stacktrace of the SqlException in a Java-program.
But how can I catch this information to store in a logtable ?
When I change the stored procedure as follows, I get only the number of the line where format_call_stack is called.
But I want the number of the line where the exception is raised !!!
PROCEDURE TEST_PRC
IS
BEGIN
RAISE VALUE_ERROR;
EXCEPTION
WHEN VALUE_ERROR THEN
DBMS_OUTPUT.put_line(SUBSTR(DBMS_UTILITY.format_error_stack || DBMS_UTILITY.format_call_stack, 1, 255));
END;
The output in Sql*Plus is:
ORA-06502: PL/SQL: numeric or value error
----- PL/SQL Call Stack -----
object line object
handle number name
2ae87f14 7 procedure SCH_PERSONEN.TEST_PRC
291f19b4 1 anonymous block

Answer 1

Start at the top and work your way back. If the error was in a class you did not write, read thru the trace until you get to the class you wrote and figure out what might be wrong there that could have caused the problem. Other than that, Norweed is right in saying it is a case by case basis.