SAP Tutorials

SAP BW compression or collapse

This is the process by which we delete the request IDs; this saves space; all the regular requests are stored in the F table; when you compress, the request ID is deleted and data is moved from F table to E table; this saves space and improves performance but the disadvantage is that you can not delete the compressed requests individually

SAP BW Persistent staging area - PSA

Persistent staging area - is based on the transfer structure and source system dependent.