SAP HANA als Entwicklungsplattform
Matthias Kupczak
SAP Forum - 12. Juni 2013
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SAP HANA
A Database for
application logic?
SAP HANA Extended
Services (XS)
Embedded application
server
3
SAP NetWeaver
Application Server
on SAP HANA
4
5
SAP HANA
Demo
development tools
In-Memory Computing
CPU
Memory
Column Store
Partitioning
Compression
Insert Only on
Delta
Logging
and Backup
Storage
Disks
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3
In-Memory Computing Implications
Delegation of data intense operations to the in-memory computing
Today‘s applications
execute many data
intense operations in
the application layer
Application Layer
Data Layer
In-Memory Computing Imperative:
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
High performance apps
delegate data intense
operations to the
in-memory computing layer
Avoid movement of detailed data
Calculate first, then move results
4
SAP HANA PlatformSAP HANA is an open platform!
The Agony of Choice
Not
SAP applications
benefitsBI,ofthird
HANA
capabilities!
NW only
AS, HTML5-based,
SAP BusinessObjects
party tools,
any application Server
https, ODBC, JDBC, oData, SQL, MDX, …
Web
Resource
oData Service
SAPdelivered
XS Engine
Application Services
Customer Views
Customer
Queries
Customer SQL
Script
Modeled / Scripted views
Stored Procedures
SAP HANA PLATFORM
Database Layer
Integration Layer
logic as close as
possible to the data
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
HANA Development
Physical Tables
Libraries, R-integration, Hadoop, data sources
Data available
instantaneously
Pre-defined or own
developed models
within the database
5
Integrated development scenarios
Application Function Library (AFL) / Business function library (BFL) &
Predictive Analytic Library (PAL)
UI integration / SAPUI5
External Libraries / e.g. Statistical language R
External Data integration / e.g. Hadoop cluster
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6
SAP HANA embedded application server
SAP Extended Services (XS)
Scope & features
•
Lightweight small web-based
applications
•
leveraging the built-in strengths of SAP
HANA capabilities
•
Client
Presentation logic
Presentation artifacts
HANA
Control flow logic
minimize “layers”
•
with an http-based UI (browser,
mobile apps)
•
run directly on SAP HANA, without
an additional external application
server
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Control flow artifacts
Calculation logic
Data
Data artifacts
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SAP ABAP Netweaver Application Server
SAP ABAP Application Architecture
was built on several constraints
 Data does not fit into server memory
completely
 Disk I/O is a performance bottleneck
 The network is a performance bottleneck
 The DBMS is a bottleneck
(as resource shared by all users)
…
Application Server
CPU
Core
CPU Cache
Some of these constraints changed
 Data transfer between memory and CPU
now an important performance bottleneck
Still to be considered:
Data transfer via network
Performance bottleneck today:
CPU waiting for data to be
loaded from memory into cache
Main Memory
Performance bottleneck in the past:
Disk I/O
Disk
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8
HANA Innovations Overview - SAP Applications
Code Optimization
Different Landscape options
HANA Content
(Reporting &
Analytics)
HANA
Accelerators
Business
Suite
on HANA
•
NetWeaver 7.3x first release ready for HANA
•
NetWeaver 7.40 massive HANA optimizations
Suite on HANA (NW 7.40)
Client
Apps
BW
VDL
PLM
Any
DB
HANA
DB
SRM
SAP
Business
Suite
SCM
HANA
DB
ERP
Any
DB
(VDL)
Client
CRM
SAP
Business
Suite
SAP
Business Suite
•
Benefits of Hana optimization and full support of
HANA capabilities
•
DDIC integration of HANA artifacts
•
Optimized tools, e.g. Trace tools, code inspector,
etc.
Switch Framework after DB migration
• Non disruptive, independent optimization
without changing business logic
HANA DB
•
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Different Optimization Categories
NW ABAP
Optimizations
AS ABAP
•
NEW tools for optimization with NW 7.40
•
e.g. code inspections,
•
Get SAP standard optimizations
•
Extended UI experiences due to HANA
capabilitites
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
Push down
•
Optimize ABAP source code
examples
• Replace „SELECT * …“ into
„SELECT <fieldlist>“
• SQL push down instead of loop
internal table
HANA Dev.
•
using HANA capabilities
•
Implementation of complete new
processes
•
Integrate with external data and or
programming libraries
•
Extend the varity of client tools
10
NW 7.40 AS ABAP optimization tools
•
SQL Trace (ST05)
•
Runtime Analysis (SAT)
•
Code Inspector (SCI)
•
DBACOCKPIT (ST04)
•
Statistical records (STAD)
•
Memory Analysis (S_MEMORY_INSPECTOR)
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Optimizing ABAP code using Open SQL
“Old” ABAP Code
the column FOR
store by selecting
OPENLeverage
CURSOR ld_cursor
SELECT only
* required columns!
FROM (ls_tablenames-tot_table)
CONNECTION (i_dbcon_name)
WHERE rldnr = ld_ledger
Leverage
SAP HANA capabilities by
AND
rrcty IN i_range_rrcty
selecting
from HANA views
AND
rvers IN i_range_rvers
AND
rbukrs IN i_range_bukrs
AND
ryear IN i_range_ryear
AND racct IN i_range_racct
to the
ANDDelegate
rtcuraggregations
IN i_range_rtcur
AND
drcrk
IN i_range_drcrk
SAP
HANA
database!
AND
rpmax IN i_range_rpmax
AND (it_where_clause)
ORDER BY (it_orderlist).
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
“New” ABAP Code
SELECT (lt_fieldlist)
FROM zviewsdf2
CONNECTION (i_dbcon_name)
WHERE rldnr = g_leading_rldnr
AND
rrcty EQ '0'
AND
bukrs IN gt_ranges_bukrs
AND
rbusa IN gt_ranges_gsber
AND
racct IN gt_ranges_racct
AND
ryear IN gt_ranges_ryear
AND (lt_where_clause)
GROUP BY (lt_grouplist)
ORDER BY (lt_orderlist).
*connection (DBCON) refers to a secondary DB connection. Also
known as side-car, side-by-side HANA setup
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SAP HANA Platform
Development
NW AS, HTML5-based, SAP BusinessObjects BI, third party tools, any application Server
https, ODBC, JDBC, oData, SQL, MDX, …
Web
Resource
oData Service
SAPdelivered
XS Engine
Application Services
Customer Views
Customer
Queries
Customer SQL
Script
Modeled / Scripted views
Stored Procedures
SAP HANA PLATFORM
Database Layer
Integration Layer
logic as close as
possible to the data
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
HANA Development
Physical Tables
Libraries, R-integration, Hadoop, data sources
Operational data
available
instantaneously
Pre-defined or own
developed models
within the database
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Scripting
Modeling
SAP HANA Modeling / Development
Views





SQL
Script
 Main procedural language of the SAP HANA database
 Push data intensive operations into the database
 Utilized in script-based Calculation views and procedures
Intregr.
Libraries
Attribute Views (Dimensions, Time, Hierarchy, Derived)
Analytic Views (Star schemas, facts, calculations)
Calculation Views (Composite views, Modeled or Script)
Transportable design time artifacts stored in the repository
Runtime objects (Column store views) are generated from the modeled views
 Leverage the power of external libraries
 Open-Source, statistical functions through R Integration leveraging predefined functions
SAP HANA Development
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DEMO
Plunge into the real world…
1) Developing HANA Models
2) Consume HANA artifacts with SAP NW Application Server
3) Expose data directly into the web – HANA XS (HTML5 UI)
How to start? SAP Services & more…
•
HANA LAB
•
AMAZON
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Zusammenfassung – 5 Punkte zum Mitnehmen
1. SAP HANA is an open & integrated development Platform (IDE)
2. Application logic is moving into the database layer
3. HANA development platform provides standard interfaces
4. New SAP NW applications significantly benefit of HANA
capabilities…
5. … BUT is further on database independent
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Thank you!
Matthias Kupczak
Consultant
HANA CoE Switzerland
SAP Switzerland AG
Althardstrasse 80
8105 Regensdorf
T +41 566 63 96
Matthias.kupczak@sap.com
www.sap.com
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
Appendix
1)
Consume HANA DB objects post NW 7.40
2)
Consume HANA DB objects with NW 7.40
3)
Translate open SQL to native SQL
4)
SAP HANA (XS) technics
Open SQL: Access HANA Calculation View
•
Create Calculation View with SAP HANA Studio
•
“connection“ in source code links to a predefined 2nd DB connection
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20
ADBC native SQL – ABAP DB connection
•
•
Read HANA artifacts via ADBC classes.
HANA specific SQL – no limitations
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21
Improvements with NW 7.40
•
Data dictionary (DDIC) is extended to include HANA Views
•
DDIC TYPE ‘external View’
•
ABAP reports directly connect DDIC objects via open SQL
•
Extended UI experience
•
new ALV variant, fault-tolerant value helps, Analytical side-panels)
Further Optimizations
 80% of ERP core Transactions / reports are in scope of optimizations (Most used / long running)
 Complete process optimizations
 New processes developed due to using HANA capabilities
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Example: Translation of Open SQL to Native SQL
Open SQL statement
Application
Server
Application
ABAP
VM
Table
Buffer
Open SQL
Native SQL
Database Interface (DBI)
Translated to native SQL (taken from SQL trace; ST05)
Database Specific Library
(DBSL)
DB Server
For ABAP
Native SQL
Other
DB
Sever
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DB Client
Native SQL
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XS ENGINE
•
•
•
UIS
SAPUI5
UI Rendering completely in the
Client
Server-side procedural logic in
JavaScript
All artifacts stored in the SAP
HANA Repository
•
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
XSODATA
XSJS
XSXMLA
InA
HDBRole
HDBTable
CDS
SQLScript
SQL
Views
AFL
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Code Optimization
Maximal Flexibility – Minimal Disruption
SAP HANA optimizations:
Display Business Function (SFW2)
 Additional views
 Stored procedures (code pushdown to SAP HANA)
To be activated via switch framework ‒
no change in business logic after migration to
SAP HANA




All switches are reversible
Switches can be activated independently
Maximal flexibility in consumption of optimizations
Minimal disruption for customer business
Custom Code (ABAP reports)
•
Regression tests for own code recommended
after SAP HANA migration
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