Recently added DPA to Orion and there does not appear to be any data in the Orion tables. I have looked in both the Orion database tables and views and in the tables in the SWQL Studio. The tables under DPA in SWQL are empty(DPA.BlockingOverview etc) and the Orion.DPA tables do not have any blocking or wait time information.
We don't persist any of that data currently on the Orion side.
All data that you see displayed within Orion on the database tab is pulled via SOAP calls to the DPA web server.
You'd have to query against the DPA repo to get that data.