SAP BPC to External Datamart (With no OpenHub)

Dear Experts,

I'm interested in transfer data from BPC (BI Cube) to an external Datamart with Oracle. Can anyone tell me which is the best option to do this? Idea is to put an event from BPC to launch some kind of process to pass the data from BPC to Datamart.

Problem is we don't have OpenHub license and we can't use it.

Thanks in advance.