SAP HANA was initially, developed in Java and C++ and designed to run only Operating System Suse Linux Enterprise Server 11. SAP HANA system consists of multiple components that are responsible to emphasize computing power of HANA system.

Most important component of SAP HANA system is Index Server, which contains SQL/MDX processor to handle query statements for database.
HANA system contains Name Server, Preprocessor Server, Statistics Server and XS engine, which is used to communicate and host small web applications and various other components.

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Index Server

Index Server is heart of SAP HANA database system. It contains actual data and engines for processing that data. When SQL or MDX is fired for SAP HANA system, an Index Server takes care of all these requests and processes them. All HANA processing takes place in Index Server.

Index Server contains Data engines to handle all SQL/MDX statements that come to HANA database system. It also has Persistence Layer that is responsible for durability of HANA system and ensures HANA system is restored to most recent state when there is restart of system failure.

Index Server also has Session and Transaction Manager, which manage transactions and keep track of all running and closed transactions.

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Index Server − Architecture

SQL/MDX Processor

It is responsible for processing SQL/MDX transactions with data engines responsible to run queries. It segments all query requests and direct them to correct engine for the performance Optimization.

It also ensures that all SQL/MDX requests are authorized and also provide error handling for efficient processing of these statements. It contains several engines and processors for query execution −

MDX (Multi Dimension Expression) is query language for OLAP systems like SQL is used for Relational database. MDX Engine is responsible to handle queries and manipulates multidimensional data stored in OLAP cubes.
Planning Engine is responsible to run planning operations within SAP HANA database.
Calculation Engine converts data into Calculation models to create logical execution plan to support parallel processing of statements.
Stored Procedure processor executes procedure calls for optimized processing; it converts OLAP cubes to HANA optimized cubes.

Transaction and Session Management

It is responsible to coordinate all database transactions and keep track of all running and closed transactions.

When a transaction is executed or failed, Transaction manager notifies relevant data engine to take necessary actions.

Session management component is responsible to initialize and manage sessions and connections for SAP HANA system using predefined session parameters.

Persistence Layer

It is responsible for durability and atomicity of transactions in HANA system. Persistence layer provides built in disaster recovery system for HANA database.

It ensures database is restored to most recent state and ensures that all the transactions are completed or undone in case of a system failure or restart.

It is also responsible to manage data and transaction logs and also contain data backup, log backup and configuration back of HANA system. Backups are stored as save points in the Data Volumes via a Save Point coordinator, which is normally set to take back every 5-10 minutes.

Preprocessor Server

Preprocessor Server in SAP HANA system is used for text data analysis.

Index Server uses preprocessor server for analyzing text data and extracting the information from text data when text search capabilities are used.

Name Server

NAME server contains System Landscape information of HANA system. In distributed environment, there are multiple nodes with each node has multiple CPU’s, Name server holds topology of HANA system and has information about all the running components and information is spread on all the components.

Topology of SAP HANA system is recorded here.
It decreases the time in re-indexing as it holds which data is on which server in distributed environment.

Statistical Server

This server checks and analyzes the health of all components in HANA system. Statistical Server is responsible for collecting the data related to system resources, their allocation and consumption of the resources and overall performance of HANA system.

It also provides historical data related to system performance for analyses purpose, to check and fix performance related issues in HANA system.

XS Engine

XS engine helps external Java and HTML based applications to access HANA system with help of XS client. As SAP HANA system contains a web server which can be used to host small JAVA/HTML based applications.

XS Engine transforms the persistence model stored in database into consumption model for clients exposed via HTTP/HTTPS.

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SAP Host Agent

SAP Host agent should be installed on all the machines that are part of SAP HANA system Landscape. SAP Host agent is used by Software Update Manager SUM for installing automatic updates to all components of HANA system in distributed environment.

LM Structure

LM structure of SAP HANA system contains information about current installation details. This information is used by Software Update Manager to install automatic updates on HANA system components.

SAP Solution Manager (SAP SOLMAN) diagnostic Agent

This diagnostic agent provides all data to SAP Solution Manager to monitor SAP HANA system. This agent provides all the information about HANA database, which include database current state and general information.

It provides configuration details of HANA system when SAP SOLMAN is integrated with SAP HANA system.

SAP HANA Studio Repository

SAP HANA studio repository helps HANA developers to update current version of HANA studio to latest versions. Studio Repository holds the code which does this update.

Software Update Manager for SAP HANA

SAP Market Place is used to install updates for SAP systems. Software Update Manager for HANA system helps is update of HANA system from SAP Market place.

It is used for software downloads, customer messages, SAP Notes and requesting license keys for HANA system. It is also used to distribute HANA studio to end user’s systems.

So, this brings us to the end of blog. This Tecklearn ‘Core Architecture of SAP Hana’ blog helps you with commonly asked questions if you are looking out for a job in SAP Hana and SAP Domain. If you wish to learn SAP Hana and build a career in SAP domain, then check out our interactive, SAP HANA Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

https://www.tecklearn.com/course/sap-hana-training-certification/

SAP HANA Training

About the Course

SAP HANA is an in-memory computing application that is designed and developed to boost the business processes, deliver smart solutions, and simplify both hardware and software environments. Our Sap Hana Training course will help you understand and learn the fundamentals and will also felicitate on training hands-on for the better grasp on the course. Further, we have the highly qualified professionals who will train you about Sap Hana Studio, Modelling, Security features and its various other aspects. You will understand why SAP HANA is a fundamentally different database engine upon the completion of this SAP HANA course.

Why Should you take SAP HANA Training?

The average Sap Hana Consultant salary $165,750 per year or $85 per hour. (neuvoo.com).
SAP HANA is the highest growing technology; hence, there is no surprise in plenty of career opportunities in this field. Since it is one among the fastest-growing products in the history of SAP, it is considered by the industries as a ground-breaking key for in-memory databases.
SAP HANA currently has more than 6,500 customers globally.

What you will Learn in this Course?

Introduction to SAP HANA

Fundamentals of SAP HANA
Capabilities of SAP HANA
Limitations of SAP HANA

Key Features of SAP HANA

Key Features: High Performance functionalities In-Memory computing, Columnar store database, Data Compression and Massive Parallel Processing
Using SAP HANA for Non-SAP Applications

Architecture of SAP HANA

Detailed Architecture of SAP HANA Database
Concept of SAP HANA Landscapes and Scenarios

Overview of HANA Studio

SAP HANA System – Perspectives, Administration, Modelling, Development Plan
HANA Database SQL Basics and Database SQL Script
Types of statements and data types
Operators, expressions and basic query execution
Sub-queries, Types of Joins, Expressions and Loops
Catalog – Schema, Table, Views, Functions, Stored Procedures, Index, Synonyms, Sequences, Triggers

Data Provisioning

Data Provisioning with Flat File upload
Provisioning – SDA (Smart Data Access)
Joins Types in HANA

SAP HANA Modelling

Types of Models
Attribute Views, Joins and Using Filter Operations
Creating Restricted and Calculated Columns
Using Hierarchies
Analytic Views – Star Schema design and Multi-Dimensional Modelling
Variables and Input parameters

Calculation Views

Dimension Calculation View
Information View
SAP HANA Variables
Introduction to Input Parameters

SAP Project

Using HANA analytical view building of COPA (Controlling and Profitability Analysis) model
SAP HANA COPA for evaluation of market segments and classification of markets according to the products, customers or any combination of it

Dimension Calculation View

Dimension Calculation View – Star Join Calculation view
Using Projection, Join, Aggregation, Union and Rank

In-depth Modelling

Refactoring information models
Schema Mapping
Propagate to schematics and Show Lineage
Schema Mapping
Generating Time Data
Union Pruning
Using Time Travel
Migrating deprecated Information models
Using Currency Conversion
Web based Modelling Work bench

Analytic Privileges and Decision Tables

Classical Analytic Privileges
SQL Analytic Privileges
Dynamic analytic Privileges.
Turning Business Rules into Decision tables
Table Functions

SAP HANA Table Function

Query Optimizing Technique related to SAP HANA Tables
Web Based Modelling work bench

SAP HANA on Cloud

SAP Analytics with SAP Reporting environment SAP BOBJ – tools, WEBI, LUMIRA, DASHBOARD (integration between sap Hana and bob)

Advanced Topics Overview

SAP HANA Dynamic tiering
Delta Merge
SDI (Smart Data Integration)
SDA (Smart Data Access)

DATA Provisioning

SLT – SAP Landscape Transformation
BODS – Business Objects Data Services

Analytical Privileges

Classical XML Based Analytical Privileges
SQL Analytical Privileges

HANA Administration and Security

Hana Administration
Security in SAP HANA – User Management

Got a question for us? Please mention it in the comments section and we will get back to you.

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