Schedule statistics update via sap programm

Hello Experts

I use a standard bw delta datasource.

This datasource extracts data from a huge table in ECC6 to BW 7.4.

Every evening, in TCode DB02, statistics update is scheduled on this ECC table.

The datasource extract a similar number of records, one day during a few minutes and the day after during a few hours.

But if we run statistics update, in TCode DB02, just before running the datasource, then the datasource always ends fast.

So i'm looking for a way put into a Remote process chain in ECC the component of ABAP program, that responsible for statistics update.

I want to update statistics on that table, just before the start of the BW process chain.

Thanks in advance.