Custom Code Analyse für HANA Projekte

Transcription

1 Custom Code Analyse für HANA Projekte R/2 R/3 ERP SAP SE or an SAP affiliate company. All rights reserved. 1

2 Agenda HANA DB Notwendige Funktionale Custom Code Anpassung Optionale Performance Optimierung ATC, UPL SQL Monitor und SWLT S4HANA Anpassung Custom Code wegen Simplifizierung Custom Code Analyse NW SAP AG or an SAP affiliate company. All rights reserved. Customer 2

3 Custom Code Analysis and Adjustments There is no need to adapt all objects, focus on the most critical based on usage and impact Capture the Custom Code Footprint Custom Code Maintainability Check Custom Development Management Cockpit (CDMC) or Custom Code Lifecycle Management (CCLM) Reduce the scope Usage Procedure Logging (UPL) ABAP SQL Monitoring (SQLM) 3. Identify the impacted objects CDMC Code Inspector ABAP Test Cockpit (ATC) Total Footprint Used Objects Impacted Objects Critical Objects 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. Customer 3

4 What is the impact of SAP HANA on your custom code? 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 4

5 Agenda HANA DB Notwendige Funktionale Custom Code Anpassung Optionale Performance Optimierung ATC, UPL SQL Monitor und SWLT S4HANA Anpassung Custom Code wegen Simplifizierung Custom Code Analyse NW SAP AG or an SAP affiliate company. All rights reserved. Customer 5

6 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 DB Migration SAP HANA Architecture / Depooling & Declustering Coding to be corrected Native SQL, Hints, using DB specific features - 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. Customer 6

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

8 Custom code - Database and Functional related issues How to address Critical statements where Native SQL or DB Hints are used 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 8

9 ABAP Test Cockpit and Performance Tuning Worklist ABAP Test Cockpit Overview 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 9

10 Agenda HANA DB Notwendige Funktionale Custom Code Anpassung Optionale Performance Optimierung ATC, UPL SQL Monitor und SWLT S4HANA Anpassung Custom Code wegen Simplifizierung Custom Code Analyse NW SAP AG or an SAP affiliate company. All rights reserved. Customer 10

11 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 Minimize the search overhead Rule still valid In most cases SAP HANA does not require secondary indices 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 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 11

12 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. Customer 12

13 The new Code to Data Paradigm powered by SAP HANA Calculations AS ABAP Data to Code Code to Data (aka Code pushdown) SAP HANA Database Calculations Classic approach New approach Code pushdown means delegating data-intensive processing to the database layer 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 13

14 SAP HANA Code Pushdown Example ABAP Managed Code Pushdown Extensively utilized in SAP S/4 HANA 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 14

15 The New ABAP SQL Monitor Architecture 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 15

16 The New ABAP SQL Monitor Analyzing Data 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 16

17 The New ABAP SQL Monitor Analyzing Data 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 17

18 ABAP Test Cockpit and Performance Tuning Worklist ABAP Test Cockpit Overview 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 18

19 ABAP Test Cockpit and Performance Tuning Worklist SQL Performance Tuning Worklist Motivation 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 19

20 ABAP Test Cockpit and Performance Tuning Worklist SQL Performance Tuning Worklist Usage 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 20

21 ABAP Test Cockpit and Performance Tuning Worklist SQL Performance Tuning Worklist Usage 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 21

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

23 Agenda HANA DB Notwendige Funktionale Custom Code Anpassung Optionale Performance Optimierung ATC, UPL SQL Monitor und SWLT S4HANA Anpassung Custom Code wegen Simplifizierung Custom Code Analyse NW SAP AG or an SAP affiliate company. All rights reserved. Customer 23

24 What is the impact of S4HANA on your custom code? 2014 SAP AG or an SAP affiliate company. All rights reserved. Customer 24

25 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. Customer 25

26 Many Thanks Georg Loderer Business Process Principal Consultant M E georg.loderer@sap.com SAP AG or an SAP affiliate company. All rights reserved.