Block DSO from the BPC loading

Hi,

We have this heavily adhoc loading from ECC to BW during daytime.

At the same time, same DSO has been called by the BPC user using the Data Manager.

Because of this, my adhoc loading keep getting hanging and sometimes it took almost 2 hours to complete the delta loading.

When I checked the adhoc process chain, the culprit is on the DTP layer between PSA to the DSO and and the DSO activation.

So, I'm thinking during the adhoc loading, I want to block/lock the DSO from any accessing.

I tried using FM 'ENQUEUE_E_BW_ODSO' and the DSO can be seen in SM12.

But, I still can import and process the DSO using data manager... which I don't want it to be happen..

So, I need some idea and advice on this. thanks