SAPFans BW forum
SAP Business Warehouse forum on The SAP Fan Club Forums. It is one of the most visited and active forums on the web....
http://www.sapfans.com/forums/viewforum.php?f=16

SAP community network forum
The SAP Data Warehousing forum deals with the topics of integration, transformation, consolidation, cleanup, and storage of data. Includes topics about data modeling, data extraction and administration of the data warehouse management processes or other...
https://www.sdn.sap.com/irj/sdn/forum?forumID=133

SAP network forums - finder
The biggest and the most valuable SAP forums, organized into a number of categories related to SAP related products. There are a few categories related to Business Intelligence in SAP environments: SAP Solutions SAP NetWeaver Database & OS Platforms SAP...
https://www.sap.com/community/topic.html

SAP Netweaver downloads
SAPDocs provides information on SAP Netweaver BI downloads, tutorials and guides. The webpage provides tips and tricks on SAP BW, help on SAP Web Application Server and SAP System Configuration Guide(CIN) and much more....
http://www.sapdocs.info/application-modules/netweaver/