Export data to aDSO using oDATA connection

Hi,

I am trying to export data from SAC to an aDSO within BW (BW/4HANA).

I did all the configuration and the export used to work, and then it started to just hang when it is executed.

On the back end when managing the aDSO, I can see the processes, but for some reason the status keeps on just as "Running" and never finishes.

I have killed the processes, and executed again, but still doesn't run through.
Any ideas where I can see what is potentially blocking the process from completing?

Thanks

Henry