How to see PL/SQL Stored Function body in Oracle

Question

I have a stored function in Oracle database pAdCampaign.fGetAlgoGroupKey. How to see the code of this function.?

Answer 1

SELECT text 
FROM all_source
where name = 'FGETALGOGROUPKEY'
order by line

alternatively:

select dbms_metadata.get_ddl('FUNCTION', 'FGETALGOGROUPKEY')
from dual;