SQL Cockpit & SAP HANA Verify your SQL queries for HANA-

suitability

Johann Fößleitner Cadaxo GmbH

eMail: johann.foessleitner@cadaxo.com

Twitter: @foessleitnerj

1 SAP HANA Integration Scenarios (Business Suite)

2 Golden SQL Rules

3 HANA Objects in ABAP

4 Analysis / Monitoring Tools in SAP Standard

5 Cadaxo SQL Cockpit

6 Questions & answers, further information

Agenda

ABAP Open SQL Native SQL DB Hints

ADBC (DB Features)

What impact does a conversion to HANA have on

client programs?

• Programs run

predominantly

continue running

problem-free

• Many queries are

considerably faster

• Some queries behave the

same after the conversion

• Isolated queries can have

reduced performance

• Programs must be

verified

• Change to Open SQL if

possible

• DB Hints tested/adjusted

• ADBC access

tested/adjusted

1 SAP Hana integration scenarios (Business Suite)

2 Golden SQL Rules

3 HANA Objects in ABAP

4 Analysis / Monitoring Tools in SAP Standard

5 Cadaxo SQL Cockpit

6 Questions & answers, further information

Agenda

SAP ABAP Application Server

SAP HANA

Read / Write,

primary connection

Business Suite – SAP HANA Scenarios

SAP ABAP Application Server

SAP HANA AnyDB (Traditional)

Replikation

Read only,

secondary connection

SLT

Side-by-Side

SAP ABAP Application Server

SAP HANA AnyDB (Traditional)

Integrated

Read/Write,

secondary connection Read / Write,

primary connection

Read / Write,

primary connection

1 SAP Hana integration scenarios (Business Suite)

2 Golden SQL Rules

3 HANA Objects in ABAP

4 Analysis / Monitoring Tools in SAP Standard

5 Cadaxo SQL Cockpit

6 Questions & answers, further information

Agenda

Golden SQL Rules

The golden SQL Rules are just as

applicable in the HANA environment as

in other DB environments

The golden SQL Rules Result set should be kept small

Amount of data should be kept to a minimum

Number of data transfers should be minimised

Secondary indices should be used

Redundant queries should be avoided

Die goldenen SQL Regeln Resultset should be kept small

Amount of data should be kept to a minimum

Number of data transfers should be minimised

Secondary indices should be used

Redundant queries should be avoided

Result set should be kept small

Don‘t use SELECT … CHECK/EXIT … ENDSELECT

WHERE-clause should be as specific as possible

Amount of data should be kept to a

minimum

Avoid using SELECT *

Use aggregate functions (COUNT, SUM, … )

Number of data transfers should

be minimised

Joins and Subselects should be used

Use SELECT for all ENTRIES

INSERT/UPDATE, … FROM TABLE should be used

Secondary indices should be used

Meaningful secondary indices should be

created/implemented

Access of the secondary indices should be tested

Redundant queries should be

avoided Redundant read access should be avoided

Table buffering should be activated

Perform sorting of the bulk data in ABAP

1 SAP Hana integration scenarios (Business Suite)

2 Golden SQL Rules

3 HANA Objects in ABAP

4 Analysis / Monitoring Tools in SAP Standard

5 Cadaxo SQL Cockpit

6 Questions & answers, further information

Agenda

…

SELECT <column> from <table>

connection HDB

where …

…

Open SQL / Connection

EXEC SQL.

connect to 'HDB' as 'HDB'

ENDEXEC.

EXEC SQL.

open …

ENDEXEC.

Native SQL

…

CL_SQL_CONNECTION=>GET_CONNECTION(

con_name = ‘HDB‘ ).

…

ADBC (ABAP Database Connectivity)

Very simple

Tables must be defined in ABAP dictionary No access to analytical views, HANA procedures, …

Access to HANA Objects (procedures, … )

Higher implementation complexity

Access to HANA Objects (procedures, … )

Simpler to implement than native SQL

Side-by-Side ABAP/HANA

…

SELECT <column> from <table>

where …

…

Open SQL

…

SELECT <column> from <hana_view>

where …

…

External Views

…

CALL DATABASE PROCEDURE …

…

HANA Prozeduren (DB Proxy)

As before

Generation of external views in HANA Studio Analytical Views, …

Access with normal ABAP Open SQL

Proxy generation of procedures in HANA Studio

Integrated ABAP/HANA

1 SAP Hana integration scenarios (Business Suite)

2 Golden SQL Rules

3 HANA Objects in ABAP

4 Analysis / Monitoring Tools in SAP Standard

5 Cadaxo SQL Cockpit

6 Questions & answers, further information

Agenda

How do I find ABAP (SQL) coding to be potentially

optimized/corrected?

Static checks

• Code Inspector

• ABAP Test Cockpit (ATC)

Monitoring tools in ABAP

• SQL Trace (ST05)

• Runtime Analysis (SAT)

• SQL Monitor (SQLM)*

• SQL Performance Tuning Worklist (SWLT)*

• Coverage Analyzer

• 3rd Party tools

• …

Monitoring tools at DB level

• DB dependant SQL monitoring tools

* Available from 7.40 in Standard

Code Inspector

• Static performance tests • Many SQL relevant tests are available

• SELECT *, Indices, Nested LOOP, …

• Analyses don‘t distinguish, • if it concerns „dead coding“

• if the coding sequence is often used

i.e. if it is relevant for optimization

• Dynamic SQL queries can not be

analysed

SQL Monitor

• Logs all SQL queries

• Implementation in productive

environment is possible with

little/no impact on performance

• Can also be utilized for non-HANA

based SAP Systems • E.g. BEFORE a HANA-conversion

• Available from NW 7.00

SQL Performance Tuning Worklist

• Combines static tests (Code

Inspector, ABAP Test Cockpit)

with related SQL Monitor results

• Ideal combination to pin-point

SQL queries to be optimized

1 SAP Hana integration scenarios (Business Suite)

2 Golden SQL Rules

3 HANA Objects in ABAP

4 Analysis / Monitoring Tools in SAP Standard

5 Cadaxo SQL Cockpit

6 Questions & answers, further information

Agenda

„ABAP Open SQL Database Viewer“

Support Acceleration

of IT processes

Development Test

management

Knowledge sharing tool

Data consistency

Area of

application

Overview

Some clients using SQL Cockpit:

Live presentation of SQL Cockpit

SQL Cockpit versions

Standard Edition

• SQL Viewer/Editor

• No database manipulation possible

Premium Edition

• Traceable changes directly on table level

• Verified by E&Y*

* KFS/DV1 „Accepted IT accounting principles“

1 SAP Hana integration scenarios (Business Suite)

2 Golden SQL Rules

3 HANA Objects in ABAP

4 Analysis / Monitoring Tools in SAP Standard

5 Cadaxo SQL Cockpit

6 Questions & answers, further information

Agenda

Questions & Answers

Further information • ABAP und SAP HANA

– http://www.saphana.com

– http://sdn.sap.com/community/abap/hana

– SAP Press: ABAP Development for SAP Hana

• ISBN 978-1-59229-859-4 • http://www.sap-press.com/products/ABAP-Development-for-SAP-HANA.html

• SQL Cockpit

– http://www.cadaxo.com/content/en/products

– http://www.youtube.com/user/CadaxoGmbH

• Interesting SAP Notes – SQL Monitor: 1885926, 1806015, 1831460, …

– SAP Hana: 1812713, …

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