DSO content deletion in process chain

Hi All,

           We have added a process Delete data target contents with a DSO in it. The DSO has around 500 thousand million records, But it is taking 15 to 20 min to complete the step. The same, If i right click and delete the data target contents, it is taking less than a minute. We are in the version BW 7.4 SP9 on Hana. Is this because of Hana DB ? Is there a way we can fix this ? Please suggest.

Thanks,

Magesh Anandan.