Hello,
I am not sure if below notes have been completely checked.
1889656 - DB6: Mandatory SAP NW BW corrections for BLU Acceleration
1819734 - DB6: Use of BLU Acceleration
1825340 - DB6: Use of BLU Acceleration with NetWeaver BW
If so, I recommend to create a SAP ticket and we will continue to help you.
Thanks and kind regards
Maria