How to find proc/func name from package name and line number?

Question

Hi,
We are using the pl/sql call stack dump (dbms_utility.format_call_stack) for some debugging purposes. But in the case of a package body execution, the dump does not return the name of the procedure/function that is being executed, but only the name of the package and the line number being executed. So, we have a requirement wherein we need to extract the type and name of a package subunit from the package name and line number.
e.g.
From the information package 'A', line number 739
we should be able to deduce that line 739 is a part of *'function A.f'*
Does the oracle database provide any native mechanism (PL/SQL packages or otherwise) to support such functionality? If it does not, how can we achieve the desired result?
Thanks in advance,
Shashank

Answer 1

The approach we are currently planning to take up is this :
1. Write PL/SQL code to parse the entire source (user_source) and build a database table with a structure like this :
PACKAGE_NAME | UNIT_TYPE | UNIT_NAME | START_LINE | END_LINE
=============================================
A | PROCEDURE | P1 | 20 | 345
A | FUNCTION | F1 | 347 | 629
etc..
2. Start PL/SQL package execution.
3. Keep dumping call stack snapshots whenever a custom debug procedure is called.
4. Dump the package name and line number to a log file.
5. Using the package name and line number, query the table built in step 1 and build the final report which shows the control flow in a readable form.
What we want is to get rid of step 5 and by some means get the logic to extract the unit type and name in step 4 itself.
Keep them coming..
Thanks and regards,
Shashank