Lalit Kumar B's blog
It is a frequently asked question in almost all the Oracle forums. There have had been numerous questions/posts regarding "But how to generate the trace file?" Well, it might seem a heck of a task, however, looking it step by step will make you understand that it is actually not that difficult.
Usually, database application developers do not have the required/necessary permissions/privileges to do all the steps that I will mention below. However, most of the steps could be done by application developer.
An important thing regarding function, you would agree with me that, at least once a PL/SQL developer must have heard that "A function MUST ALWAYS RETURN a VALUE of proper datatype".
One of the most important things that a developer does apart from just code development is, debugging. Isn’t it? Yes, debugging the code to fix the errors that are raised. But, in order to actually debug, we need to first capture them somewhere. As of now, any application has it’s own user defined error logging table(s).
Imagine, if the tool is rich enough to automatically capture the errors.