© 2015 SAP SE or an SAP affiliate company. All rights reserved. 1

Custom Code Analyse für HANA Projekte

R/2

1979

R/3

1992

ERP

2004 2015

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 2Customer

Agenda

Notwendige Funktionale Custom Code

Anpassung

Anpassung Custom Code wegen

Simplifizierung

Optionale Performance Optimierung

Custom Code Analyse NW750

ATC, UPL

SQL Monitor und SWLT

HANA DB

S4HANA

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 3Customer

Custom Code Analysis and Adjustments

Total Footprint Used Objects ImpactedObjects

Critical Objects

1

2

3

4

There is no need to adapt all objects, focus on the most critical based on usage and impact.

1. Capture the Custom Code Footprint

• Custom Code Maintainability Check

• Custom Development Management Cockpit (CDMC) or

• Custom Code Lifecycle Management (CCLM)

2. Reduce the scope

• Usage Procedure Logging (UPL)

• ABAP SQL Monitoring (SQLM)

3. Identify the impacted objects

• CDMC

• Code Inspector

• ABAP Test Cockpit (ATC)

4. Focus on those objects that are

critical for the business

• SAP Performance Tuning Worklist (SWLT)

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 4Customer

What is the impact of SAP HANA on your custom code?

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 5Customer

Agenda

Notwendige Funktionale Custom Code

Anpassung

Anpassung Custom Code wegen

Simplifizierung

Optionale Performance Optimierung

Custom Code Analyse NW750

ATC, UPL

SQL Monitor und SWLT

HANA DB

S4HANA

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 6Customer

Adjust HANA Specific

Can any custom ABAP code cause potential functional issues requiring it to be changed?

In general existing ABAP code runs on SAP HANA as before.

Only if ABAP code relies on technical specifics of the old database or directly accesses pool / cluster

tables then ABAP code changes would be necessary.

Reason Coding to be corrected

DB Migration Native SQL, Hints, using DB specific features

SAP HANA Architecture /

Depooling & Declustering

- Direct access of technical index information or cluster/pool tables

- Relying on the “default” sorting of DB content which is not guaranteed

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 7Customer

Custom code - Database and Functional related issues

How to address missing ORDER BY issue

Location of non-robust ABAP code that relies on a non-guaranteed/implicit sorting of certain SQL

queries, even though no ORDER BY clause is used. For these incorrect ABAP source code sections, an

explicit sorting of the SQL query must be inserted (ORDER BY clause or ABAP SORT).

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 8Customer

Custom code - Database and Functional related issues

How to address Critical statements where Native SQL or DB Hints are used

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ABAP Test Cockpit and Performance Tuning Worklist

ABAP Test Cockpit – Overview

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Agenda

Notwendige Funktionale Custom Code

Anpassung

Anpassung Custom Code wegen

Simplifizierung

Optionale Performance Optimierung

Custom Code Analyse NW750

ATC, UPL

SQL Monitor und SWLT

HANA DB

S4HANA

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 11Customer

What is the impact on your custom code of SAP HANA?

Is any custom ABAP code likely to cause performance issues with SAP HANA?

Existing “golden rules” for Open SQL remain valid as general recommendations. There are some shifts

of priorities (e.g. index definition (lower) and avoidance of nested selects (higher))

Keep the result sets small Rule still valid

Minimize amount of transferred data Rule still valid

Minimize the number of data transfers Rule still valid and even more important for SAP HANA

Prefer array operations for INSERT, UPDATE and

DELETE when changing many records

Avoid nested SELECT loops

Keep load away from the database

(not part of this service) Keep unnecessary load away from the database

Code pushdown for data-intensive calculations to

benefit from SAP HANA

Minimize the search overhead Rule still valid

In most cases SAP HANA does not require

secondary indices

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 12Customer

What is the impact on your custom code of SAP HANA?

Which of the main businesses processes have the potential for HANA to speed up massively?

(not part of this service but future potential)

Which transaction should not only be technically

migrated but re-designed to use the full speed of

SAP HANA?

Code pushdown to SAP HANA enables the full

potential of HANA to leverage the most important

business processes / transactions

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 13Customer

The new “Code to Data”Paradigm powered by SAP HANA

AS ABAP

SAP HANA Database

Calculations

Calculations

“Data to Code” “Code to Data”

Code pushdown means delegating data-intensive processing to the database layer

(aka Code pushdown)

Classic approach New approach

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SAP HANA Code Pushdown ExampleABAP Managed Code Pushdown – Extensively utilized in SAP S/4 HANA

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 15Customer

The New ABAP SQL Monitor

Architecture

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The New ABAP SQL Monitor

Analyzing Data

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 17Customer

The New ABAP SQL Monitor

Analyzing Data

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ABAP Test Cockpit and Performance Tuning Worklist

ABAP Test Cockpit – Overview

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 19Customer

ABAP Test Cockpit and Performance Tuning Worklist

SQL Performance Tuning Worklist – Motivation

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ABAP Test Cockpit and Performance Tuning Worklist

SQL Performance Tuning Worklist – Usage

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 21Customer

ABAP Test Cockpit and Performance Tuning Worklist

SQL Performance Tuning Worklist – Usage

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 22Customer

Custom code assessment results – Performance SQLM

Optimisation – SQL which is executed very often

Example:

SQL Performance Tuning Worklist linked results from SQLM with static checks combining

runtime information with performance issue detected by SAP Code Inspector.

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 23Customer

Agenda

Notwendige Funktionale Custom Code

Anpassung

Anpassung Custom Code wegen

Simplifizierung

Optionale Performance Optimierung

Custom Code Analyse NW750

ATC, UPL

SQL Monitor und SWLT

HANA DB

S4HANA

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 24Customer

What is the impact of S4HANA on your custom code?

© 2014 SAP AG or an SAP affiliate company. All rights reserved. 25Customer

Adjust S4HANA Specific

Fragestellung:

• Verwendung von SAP-Objekten in Ihren Eigenentwicklungen

• Ergänzungen (wie Erweiterungen, Datenbanktabellen-Appends usw.) für SAP-Objekte

• Modifikationen an SAP-Objekten

Durchführung:

• Inhalte der Vereinfachungsdatenbank (Simplification DB) aus SAP Service Marketplace

herunterladen

• Vereinfachungsdatenbank als ZIP-Datei importieren

• Eigenentwicklungen analysieren und ZIP-Dateien herunterladen

• Metadaten zu Eigenentwicklungen hochladen

• Vereinfachungen mit Bezug auf Eigenentwicklungen analysieren

© 2014 SAP AG or an SAP affiliate company. All rights reserved.

Many Thanks

Georg LodererBusiness Process Principal Consultant

M +43-664-620 75 01

E georg.loderer@sap.com

http://www.sap.at