Hubble Accelerator Hubble Accelerator User Guide Hubble Accelerator User Guide Hubble Accelerator Shutdown Steps This section contains the instructions for safely shutting down Hubble Accelerator. The sequence should be: Shut down Qlik Replication. Disable new Connections to the Accelerator Database that could write transactions. Propagate Accelerator In-Memory Changes and Condensing the Log. Roll Transaction Log. Shut down Actian Vector. Was this article helpful? Yes No We're sorry to hear that. Click Here to Provide Feedback.