Debugging Java and PL/SQL Together
By Shay Shmeltzer-Oracle on Dec 11, 2006
A couple of people pinged me to ask if it was possible to do a "Step-into" from a Java class into a PL/SQL stored procedure while debugging.
The answer is yes if you are using JDeveloper.
The trick is to use two debug sessions - one to remote debug the PL/SQL and the other to debug the Java file.
Here is a little demo and explanation of the setup to get this working.
(you might want to press F11 while watching to get see the full screen).
Update - the original video got removed - so this one might help = https://blogs.oracle.com/shay/resource/viewlet/plsql_debug.html