#BWonHANA: Standard DSO also Optimized for HANA
The activation operation of a standard data store object (DSO) in BW 7.30 on HANA has been optimized for HANA. It has now all the performance advantages of the HANA-optimized DSO which has been originally shipped and that required an explicit conversion step during the migration to BW-on-HANA. This is now obsolete. Also, older data flow setups can now benefit from some of the advantages. The necessary changes are planned to ship with BW 7.30 SP10 (7.31 SP9 resp.) and HANA revision 57. Alternatively, BW 7.30 installations on SP8 or SP9 (7.31 SP7 and SP8 resp.) can apply code changes offered in OSS note 1849497. In summary, this yields a significant simplification.
The availability of the active and not-active data concept in HANA allows to maintain a materialized change log of the standard DSO at no impact on main memory consumption. It is even more efficient as the (on the fly) calculated change log of the HANA-optimized DSO consumes quite some memory at the moment it is accessed. So overall, the reworked standard DSO provides all the advantages and requires no conversions. As a consequence, the HANA-optimized DSO becomes obsolete. It will still be supported. So don’t worry if you are using this type of DSO. It continues to work as before. A re-conversion tool will be provided in June. Details can be found in this document.