Online Test of Jacking oil pump while unit is online running with 3000RPM


We are operating GE Frame 9E gas turbine with Mark VIE control system. This unit is DLN 1.0 i would like to ask a question related to Jacking oil pump. can we start and stop 88QB pump online while unit is running on Base load with Design RPM. To measure some electrical data like Vibration, Current and Noise.
Is there any risk toward System which may disturb. How ever i have searched a lot with GE document unfortunately this is no any information related to this thread.

Please give your opinion looking forward for kind response. if any reference document please share.