Analytics data since September 1 is missing for a Sitecore customer. We are trying to rebuild the reporting database in Production (
Sitecore 10.2). There are approximately 60+ Lacs of data. The process is going really slow (It shows 255 done after running it for more than 2 days).
There is a 'Minimum StartDateTime' field in the RebuildReportingDB.aspx which I have tried to use and provided a value of September 1. I'm trying to run this in a lower environment and even though this is going a little faster, I suspect that the data before September 1 will be lost.
So I would like to know if there are any alternatives or something can be done to expedite the process?