Explanation about SAP ABAP Stack and JAVA Stack and role of Java Stack during ECC upgrade
We are going for an upgrade of SAP ERP 4.6c to ECC 6.0 EHP5. I want to understand the following before upgrade:
a) What is Java Stack and how it is different from ABAP Stack?
b) When do we need to install Java Stack?
c) To perform the installation of EHP, do I first need to install Java Stack?