ABAP custom code adaptation for SAP HANA – The efficient way

Introduction

Currently many SAP customers plan and evaluate the migration from their classic ERP system running on any DB to Business Suite on SAP HANA or S/4HANA. For both scenarios custom ABAP code needs to be adapted for SAP HANA. This paper shares best practices in order to minimize the adaptation effort. The recommended procedure has already been applied successfully in many different SAP Hana migration projects.

Basics of Web Dynpro ABAP

Basics

Web Dynpro applications  can be created and edited in the web dynpro explorer in the ABAP development environment

It has been fully integrated into the ABAP Workbench so there is no separate transaction code. we use the object list selection to display  or create Web Dynpro component.

An ABAP tool to get ABAP source codes line number

You can use this tool ( an ABAP report ) to get the line number of your ABAP source code.

How to use this tool

Just specify the criteria based on which the source code will be scanned and line number will be calculated.

ABAP Nested Loop Performance Test

During an ABAP performance discussion, we decided to run tests to decide on the best method for nested loops. The example was to have an outer loop of BKPF and an inner loop of BSEG.

Nesting two raw loops gives the worst performance in all cases; therefore I have left it out.

In our initial test using the source code shared below; here are the methods ordered by better performance: