Unable to execute DTP, it locks after upgrade

Hi,

I am trying to run DTP from DSO to Cube, it is not getting executed. It gets stuck and I could see that it locks the objects in SM12 but no request posted to Cube(not even an yellow one).

I am doing the tests just after the BW 7.3 SP 9 upgrade from BI 7.0 version, please let me know if any one of you faced this situation...

Thanks

Sreekanth.