Keep Your Business Going During an SAP NetWeaver BW Go-Live

  • by RK, Senior SAP NetWeaver Architect, RKBWAYS, Inc.
  • July 7, 2009
During an SAP NetWeaver BW go-live, one of the most difficult tasks is the initial data load. By using the zero downtime approach, you can avoid taking your SAP source system (e.g., SAP ERP) down during the initial data loads as well as during data reloads. Find out how to follow the zero downtime approach for both logistics and non-logistics extractors.
Key Concept

Extractors enable you to pull data from SAP ERP (the source system) and move it to another system, such as SAP NetWeaver BW (the target system). Each type of extractor uses a different method to extract full and delta data sets. For example, the logistics extractor 2LIS_11_VAHDR extracts data stored in the sales and distribution table VBAK (sales order headers table).

To perform the initial data loads and data reloads to SAP NetWeaver BW from your SAP source system, the BW team may consider source system downtime (quiet time). This is challenging for many companies — especially multi-national, chemical, and manufacturing companies — because the downtime prevents users from creating transactions.

You can avoid taking your SAP source system down by using the following procedure. The loading process for logistics and non-logistics data is different, so I will show you both versions. Although the screenprints in this article are from SAP BW 3.5, the processes I describe apply to SAP NetWeaver BW 7.0 and earlier.

To learn about the SAP NetWeaver BW initialization process and using the zero downtime process to load data from two SAP NetWeaver BW systems into one SAP ERP system, refer to the article “Load Data into Two BW Systems from One R/3 Source with Zero Downtime,” by Michael Loveless and Gueorgui Patchov. This article was posted to the BI Expert knowledgebase in February 2005.


RK started his SAP career as a sales and distribution functional consultant and techno-functional consultant in 1997 in Singapore. He worked in Singapore until 1999, when he moved to the US. From 1999 to 2002, he worked as both an SAP and BW consultant. RK received certification from SAP America in 2001 on SAP BW and since then he has worked on 14 SAP NetWeaver BW projects as an architect, team lead, and senior developer. Before working with SAP, RK had 14 years of industrial experience in Indian public sectors (metallurgical, mining, heavy engineering, and process industries).

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