For performance-gains, you should tweak the use of indexes and SIFTindexes on SQL
(Index-Properties MaintainSQLIndex,MaintainSIFTIndex,SQLIndex).
With these you can gain a lot of performance because a lot of SIFT-levels are not used and a lot of indexes are never used in SQL.
There is no upgrade tools made for this - so I guess I have to make the modifications on new tables in SP2 and then read a backup to the new sp2 database.