How to Use HANA_LOCAL for Data Extraction into SAP BW/4HANA

SAP BW/4HANA is a next-generation data warehouse solution that can leverage the power of SAP HANA to provide fast and flexible analytics and reporting. But how can you get the data from your SAP or non-SAP source systems into SAP BW/4HANA? One of the options is to use HANA_LOCAL, a connection type that allows you to access local SAP HANA database schemas and extract data using SAP HANA views or tables.

In this blog post, we will explain what HANA_LOCAL is, how it works, and how you can use it to extract data from your source systems into SAP BW/4HANA. We will also share some tips and best practices for optimizing your HANA_LOCAL performance and data quality.

What is HANA_LOCAL?

HANA_LOCAL is a connection type that enables data access from local SAP HANA database schemas in the same system as SAP BW/4HANA. You can use HANA_LOCAL to extract data from SAP HANA views or tables that are defined in the local SAP HANA database schemas. You can also use HANA_LOCAL to extract data from remote sources that are connected to the local SAP HANA database via Smart Data Access (SDA) or Smart Data Integration (SDI).

HANA_LOCAL has several benefits, such as:

It supports various types of sources, such as SAP systems (S/4HANA, ECC, CRM, etc.), non-SAP systems (Oracle, SQL Server, etc.), or file systems (CSV, XML, etc.) via SDA or SDI.
It supports various types of data, such as transactional data, master data, text data, or hierarchy data.
It supports various types of extraction methods, such as full load, delta load, real-time load, or scheduled load.
It supports various types of scenarios, such as virtual access for small data volumes or low latency requirements, physical integration for large data volumes or complex transformations, or hybrid scenarios for mixed requirements.

How to Use HANA_LOCAL for Data Extraction into SAP BW/4HANA?

To use HANA_LOCAL for data extraction into SAP BW/4HANA, you need to have your source system and your SAP BW/4HANA system connected via a local SAP HANA database schema. Depending on the type of your source system and your extraction scenario, you can use different types of objects in the local SAP HANA database schema, such as:

SAP HANA view: This is an object that defines a logical view on one or more tables in the local SAP HANA database schema. You can use SAP HANA Studio or Eclipse IDE to create or maintain a SAP HANA view with the corresponding analytics annotations for use in SAP BW/4HANA. You can also use transaction RSDCUBE in the source system to activate or deactivate a SAP HANA view.
SAP HANA table: This is an object that defines a physical table in the local SAP HANA database schema. You can use SQL statements or graphical tools to create or maintain a SAP HANA table with the corresponding data types and constraints for use in SAP BW/4HANA.

Once you have your source system and your SAP BW/4HANA system ready, you can follow these steps to create an Open ODS view and start replicating data:

Log in to your SAP BW/4HANA system and call transaction RSA1 to open the Data Warehousing Workbench.
In the Modeling tab, navigate to InfoProvider > InfoObjects > InfoObject Catalogs.
Right-click on the InfoObject catalog where you want to create your Open ODS view and select Create Open ODS View.
Enter a name and a description for your Open ODS view and click on Continue.
In the General tab, select Data Type as Characteristic or Key Figure according to your requirement.
In the Master Data/Texts tab, select With Master Data if you want to store master data for your Open ODS view.
In the Business Explorer tab, select Query-relevant if you want to use your Open ODS view in queries.
In the Extraction tab, select Local SAP HANA Database Schema as Source System Type.
Click on the magnifying glass icon next to Source System to select your source system from the list of available systems.
Click on the magnifying glass icon next to Object Name to select your object from the list of available objects in your source system. You can filter the list by type, such as View or Table.
Click on Save and Activate to create and activate your Open ODS view.
Right-click on your Open ODS view and select Manage to open the Data Management screen.
In the Data Management screen, click on the Load icon to start loading data from your source system into your Open ODS view. You can choose between Full Load or Delta Load according to your requirement.
You can monitor the load status and performance by using transaction RSMO or RSPC in your SAP BW/4HANA system. You can also use SAP HANA Studio to view the loaded data in your Open ODS view.

Tips and Best Practices for HANA_LOCAL

Here are some tips and best practices for using HANA_LOCAL for data extraction into SAP BW/4HANA:

Before replicating data, make sure that your source system and target system have compatible data types and structures. You can use transaction RSDRI_ODP_CHECK in your SAP BW/4HANA system to check the consistency of data definitions between source and target systems.
To improve the performance of HANA_LOCAL, you can increase the number of parallel processes and package size according to your system resources and network bandwidth. You can also use compression techniques such as SID generation or data aging to reduce the data volume and memory consumption.
To ensure the data quality and integrity of HANA_LOCAL, you can use transaction RSDRI_ODP_REPAIR in your SAP BW/4HANA system to repair any inconsistencies or errors in the data replication. You can also use transaction RSDRI_ODP_COMPARE in your SAP BW/4HANA system to compare the data between source and target systems.
To avoid unnecessary replication of data, you can use filters to only replicate the data that you need for your SAP BW/4HANA scenarios. You can also use transaction RSDRI_ODP_DELETE in your SAP BW/4HANA system to delete the data that you no longer need from target system.

Conclusion

HANA_LOCAL is a connection type that enables data access from local SAP HANA database schemas in the same system as SAP BW/4HANA. By using HANA_LOCAL, you can leverage the power of SAP HANA to gain insights from your data in real time or on a schedule.

We hope this blog post has helped you understand how to use HANA_LOCAL for data extraction into SAP BW/4HANA. If you have any questions or feedback, please feel free to leave a comment below.

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