Extending Tablespaces while SAP Instance is running

Hi Experts,

     I would like to inquire if it is safe to extend tablespaces using Oracle BRTOOLS while SAP Instance is running?

     One of our tablespace going to reach its limit soon (98.84%) and I can't afford to shutdown the SAP Instance.

     OS: WS2012R2 Std

     DB: Oracle 12c

     System: SAP ECC 6.0

     Brtools version: 7.20

Best Regards,

Jehizon