BW: APD(Analysis Process Designer) is stuckking

Hi Experts,

I am facing an unexpected behavior of the APD(Analysis Process Designer) while trying to push data into write optimized ODS, the background job is stuckking at "BW merge trigger for ODSO" .

I have BI report as the source of the APD in which we are passing the report input prompt via Query Variant which is executing fine in RSRT but while we are trying to execute the APD,it got stuck at "BW merge trigger for ODSO ZCMM_O02 0" and job got canceled after long time (Sm37 Screen shot attached)

Although I have tried to execute only the "BW Merge trigger for ODS" via process chain it got finished in fraction opf second but its getting Stuck in APD.

Please share your knowledge.

Thanks,

Prakash