1. What is the keyword SAP Hana?

SAP HANA Current: There is a lot of discussion about HANA in the SAP community. The experts see HANA as an enabler for long-term IT strategies of digital transformation such as Industry 4.0 and the Internet of Things. We are often asked by customers what this means for the applications, provided that you plan to switch to HANA in the medium term. But what does this actually mean “conversion to HANA”? Which “HANA” is meant here?

The following article provides information on the following topics:

  • SAP Hana Architecture
  • SAP Hana Database
  • SAP S/4 HANA to replace SAP Business Suite

Basically, a distinction must be made between: the HANA database (SAP HANA DB), the HANA cloud platform and the next ERP generation SAP S/4 HANA.

2. What is SAP HANA?

Architecture SAP HANA: SAP HANA is an SAP development platform based on an in-memory database. HANA stands for “High Performance Analytic Appliance”. In-memory technology helps you get much faster than traditional databases. Data for analysis or processing is no longer copied from a hard drive to memory, but is kept there completely. Unlike traditional applications, large amounts of data are evaluated with significantly higher performance. SAP HANA runs on a variety of certified hardware systems and can also be virtualized.

In 2008, SAP HANA was created in collaboration with the Hasso-Plattner Institute and Stanford University. The goal was to enable real-time analysis of large amounts of data. SAP HANA was first used at the end of 2010. Since the beginning of 2013, the core applications of SAP Business Suite have been available on the basis of HANA. Since 2014, the SAP HANA platform has also been available in a cloud environment, the SAP HANA Cloud. In 2015, SAP Business Suite 4 SAP HANA – SAP S/4 HANA – is the first application to be presented, which is also based on the simplified data model of SAP HANA.

3. Switching to SAP HANA database?

SAP HANA Database: The first step into the HANA world is for many customers with a changeover to the HANA database (SAP HANA DB). The existing database system will be replaced. The transition to the SAP HANA database for the SAP Business Suite takes place in several steps:

Check SAP Release: The HANA database can be installed from ERP 6.0 EHP7. An SAP Business Suite system that uses SAP HANA DB as a database is called “SAP Business Suite powered by SAP HANA”.

Check HANA Ready: Customer-owned code must be checked for HANA and possible incompatibilities must be eliminated. In addition, a look at the database and table sizes should be taken. If you can reduce the volume of data through archiving, you will need less memory. An SAP Business Suite system that meets the requirements to run on an SAP HANA DB is called “HANA ready”.

Database migration and optimization: Technically, migrating to SAP HANA is a simple database migration, similar to a transition from MS SQL Server to MAX DB. All database content is exported and reimported on the new HANA database. The application tests must then be performed. In order to take advantage of HANA technology and to fully exploit the in-memory potential, targeted analysis is essential to identify possibilities for optimization. It checks which database operations can be moved from the ABAP layer to the database layer to take advantage of the real-time capability (push-down).

4. SAP S/4 Hana

In November 2015, the SP1511 version of SAP S/4 Hana was released. This also contains new and changed functions in the logistics modules. Numerous functions of the Business Suite have undergone extensive redesign. The data model has been redesigned, and many index and aggregation tables have been dropped. The table count is reduced. Inventory management includes extensive changes, the field length of the material number is changed. Material valuation and material requirements planning have also changed. There is a changed business partner model and a revised procurement. The output management system concept is also adapted. SAP Fiori interfaces are available for various applications and transactions.

4.1 What is SAP HANA Studio?

SAP HANA Studio – The Eclipse-based SAP HANA Studio is used for development and database administration. The HANA database can be accessed via the PROGRAMMING languages ABAP and Java as well as via ODBC. The database can also be accessed via the ODBC interface with any other ODBC-enabled language.

Sap HANA Developerstudio supports the entire application development lifecycle. The SAP HANA Developerstudio can be used to create SQL, SQL Script and Views using extended application services (XS). In addition, your own application logic can be implemented on the SAP HANA server. Using HTML5, Java Script and the SAP UI Development Toolkit for HTML5, applications adapted to HANA are created. SAP developers will have to have ABAP, HANA and Eclipse knowledge in the future.

4.2 SAP Hana Hardware Requirements

Requirement of memory – fast, simple approach

A simple calculation can be done on the basis of the current database. SAP recommends that you set half the size of your database and add a security buffer of 20. In addition, 50 GB for the code, stack and other services.

Sample calculation
Current database size (tables plus indexes): 250 GB
Maximum memory requirement: 250 GB / 2 * 1.2 + 50 GB = 200 GB

The following note provides the general recommendations for sizing for taking Suite into S/4 HANA:
Note 1793345

4.3 SAP S/4 Hana Installation

System ID – SID for S/4 HANA and SID for HANA DB.

Can use the same system.
Examples:
SAP SID – S/4 HANA: S4H // IDS // SKS // MUN etc.
DB SID – HANA 2.0: SHH / IDH / SKH / MUH etc

Os

>> 2 VMs: 1 HANA DB, 1 SAP Application S/4HANA
>> OS Release: SLES 12 SP4 or SLES 15 (SLES = SLES for SAP Applications)
>> SAP Notes
2235581 – SAP HANA: Supported Operating Systems
1944799 – SAP HANA Guidelines for SLES Operating System Installation + Annexes
2684254 – SAP HANA DB: Recommended OS settings for SLES 15 / SLES for SAP Applications 15
2205917 – SAP HANA Database: Recommended Operating System Settings for SLES 12/SLES 12 for SAP Applications
>> naming convention: server0 / server1; serversap / serverh etc.

S/4 HANA SAP Version

S/4 HANA 1610 // 1709 // 1809 (1709 is year 2017, month 09-September)
>> S/4 HANA 1809 initial shipment ( September.2018)
>> S/4 HANA 1809 FPS 01 ( January.2019)
>> S/4 HANA 1809 FPS 02 ( May.2019)

HANA DB Version

SAP HANA Database 2.0 Plc 03 Revision 035, 036, 037
SAP HANA Database 2.0 SPS 04 Revision 040 – the last

5. Addendum: What is SAP Simple Finance?

SAP Simple Finance: With the components Cloud, Fiori and HANA, SAP wants to develop new applications or have them developed by partners. Processes should become simpler and faster. These so-called S-Innovations are based on SAP HANA. They are intended to cover the requirements of specific business areas such as finance, procurement or sales and entire industries and to support customers in their transition to the digital economy and the cloud business. The applications are bundled into “simple” application packages. “SAP Simple Finance” is the first solution of this application line, which is already installed by some customers. The technical basis is the SAP Simple Finance add-on from the SAP Enhancement Package 7.

Operate transactional OLTP and OLAP-based business intelligence (BI) applications on a single in-memory machine with Simple Finance on SAP HANA, with all financial information stored centrally in a single repository. With Simple Finance on SAP HANA, financial accounting and controlling work on a uniform data basis for transactions and analyses. Financial data is processed granularly at the level of line items, not at the total level as before. Indices and intermediate aggregates are eliminated when financial statements are drawn up. The database structure becomes simpler. Financial information can thus be analyzed in high detail and in near real time. In the future, financial accounting and controlling in SAP Simple Finance should be able to use a single document for the accounting data. This eliminates the cumbersome and error-prone consolidation of financial data from the SAP FI and CO modules.