Hi Larry, Thanks for your response. I was unable to add enough details in the original post as 1) it was very difficult to reproduce it and I wanted to gather some more data before I could add more details. 2) I was trying to understand if this was a known problem that people ran into often. I have added more details into https://bugs.launchpad.net/keystone/+bug/1891019 based on the current observations. At this point, this doesn't looks like a sqlite bug to me.