SAP HANA is an outstanding in memory, columnar relational database system, one of the best technology innovations from SAP. HANA the acronym for High Performance is a platform for powerful, real-time analytics used for managing various business functions. It is based on cloud.
There are several paths of migration of SAP systems to SAP HANA as outlined in the below figure
- You may require to change the existing landscape during migration. You can do it with SAP landscape transformation software.
- Merge cost centers, profit centers, controlling, companies, reorganize segments
- Modify asset classes, chart of accounts, customer numbers, profit centers, cost centers, vendor numbers, personnel numbers etc
It majorly helps change, consolidate IT infrastructure by
- Creating Shell for SAP ERP
- Consolidating systems with different or matching releases, integrating SAP ERP HCM, Merging systems of SAP ERP HCM, divide data from SAP ERP HCM to system on matching or different releases and more
Apart from this there are several offerings of SAP Landscape transformation which enables installing a new system for transformation such as [phase wise migration of SAP systems or consolidation of several systems with different or matching releases on SAP HANA.
- In the classical migration of the SAP HANA process, you need to prepare the systems for migration.
- For this you are required to perform a dual stack split
- If you are having a non-unicode system, you need to have Unicode conversion
- After that you need to conduct a classical update with software update manager. This helps in bringing your SAP system to a SAP HANA supported release
- After that you use software provisioning manager to create a heterogenous copy of your SAP system
- It is a one-step migration process
The software update manager (SUM) contains a database migration option which combines classical system update and DB migration to SAP HANA
SAP HANA MIGRATION TOOLS
- Maintenance Planner
- SI Check
- Custom Code
- Sizing Report
- Software Update Manager
- DMO (Database Migration Option) of SUM
- Maintenance Optimizer
SAP HANA MIGRATION SYSTEM REQUIREMENTS
- Setting the DB data to HANA DB for migrating
- Enable Unicode system
- Update the SAP data services (DS)
STEPS FOR MIGRATION
- PREPARATION- It involves meeting the system requirements, preparing the custom codes and conducting a pre-check
- MEETING THE TECHNICAL REQUIREMENTS FOR MIGRATION – It involves software updates, conversion of data, using SAP software for landscape transformation etc
- CUSTOMIZATION- Herein we set the configurations of the GL. Asset Accounting, Controlling, materials ledger and so on
- DATA MIGRATION- In this stage we migrate the data from traditional SAP DB to SAP 4HANA
- TESTING- We test the quality of data and the inconsistencies arising out of migration
- LIVE