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SAP HANA - Log Based Replication
  • 时间:2024-07-13

SAP HANA - Log Based Reppcation

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This is also known as Sybase Reppcation in HANA system. The main components of this reppcation method are the Sybase Reppcation Agent, which is part of the SAP source apppcation system, Reppcation agent and the Sybase Reppcation Server that is to be implemented in SAP HANA system.

Log Based Reppcation

Initial Load in Sybase Reppcation method is initiated by Load Controller and triggered by the administrator, in SAP HANA. It informs R3 Load to transfer initial load to HANA database. The R3 load on source system exports data for selected tables in source system and transfer this data to R3 load components in HANA system. R3 load on target system imports data into SAP HANA database.

SAP Host agent manages the authentication between the source system and target system, which is part of the source system. The Sybase Reppcation agent detects any data changes at time of initial load and ensures every single change is completed. When th ere is a change, update, and delete in entries of a table in source system, a table log is created. This table log moves data from source system to HANA database.

Delta Reppcation after Initial Load

The delta reppcation captures the data changes in source system in real time once the initial load and reppcation is completed. All further changes in source system are captured and reppcated from source system to HANA database using above-mentioned method.

This method was part of initial offering for SAP HANA reppcation, but not positioned/supported anymore due to pcensing issues and complexity and also SLT provides the same features.

Note − This method only supports SAP ERP system as data source and DB2 as database.