Just a basic understanding about HANA.

1. SAP HANA
OVERVIEW

2. WHAT IS SAP HANA
• High-Performance Analytic Appliance
• Relational database management system developed by SAP.
• In-memory, column-oriented

3. SAP HANA LANDSCAPE

5. WHY SAP HANA?
• SPEED
• COST
• REAL-TIME
• ANY DATA, ANY SOURCE
• SIMPLE
• CHOICE
• CLOUD
• INNOVATION

6. INNOVATION

7. HANA ARCHITECTURE

8. ARCHITECTURE

9. MAIN COMPONENTS
• Index Layer
• XS Server
• Persistence Layer
• Processor Server
• Name Server
• Session Server

10. • Index Server:
– Index server is the main SAP HANA database component
– It contains the actual data stores and the engines for processing the data.
– The index server processes incoming SQL or MDX statements in the context of
authenticated sessions and transactions.
• Persistence Layer:
The database persistence layer is responsible for durability and atomicity of
transactions.
• Preprocessor Server:
The index server uses the preprocessor server for analyzing text data and
extracting the information on which the text search capabilities are based.
• Name Server:
The name server owns the information about the topology of SAP HANA
system.

11. • Statistic Server:
The statistics server collects information about status,
performance and resource consumption from the other servers
in the system.
• Session and Transaction Manager:
The Transaction manager coordinates database transactions, and
keeps track of running and closed transactions.
• XS Engine:
XS Engine is an optional component. Using XS Engine clients can
connect to SAP HANA database to fetch data via HTTP.

13. ADVANTAGE OF COLUMN STORAGE
• MASSIVE PARALLEL PROCESSING
• FASTER DATA ACCESS
• BETTER COMPRESSION
• FASTER ON THE FLY AGGREGATIONS
• AD-HOC REPORTING

14. BACK UP AND RECOVERY

15. What happens when power goes down in SAP HANA? Do we
loose all the valuable data?
The answer is NO.
SAP HANA is an in-memory database which means all the data
resides in RAM. But there is also a disc memory just for backup
purpose.

16. Why Backup is Required?
• In database technology, atomicity, consistency, isolation, and durability (ACID) is a set
of requirements that guarantees that database transactions are processed reliably:
• Atomic That is, if part of a transaction fails, the entire transaction has to fail and leave
the database state unchanged.
• Consistency of a database must be preserved by the transactions that it performs.
• Isolation ensures that no transaction is able to interfere with another transaction.
• Durability means that after a transaction has been committed it will remain committed.

17. How Backup and Recovery Works in SAP
HANA?