Issue
Why am I receiving another maintenance notification for my Heroku managed database service?
Resolution
We regularly perform maintenance on database services in order to ensure that things are kept secure and up to date.
More information about the philosophy behind our approach to regular maintenance can be found in this blog post, including tips on how to reduce the impact of maintenance on your app.
https://blog.heroku.com/frequent-maintenances-for-secure-heroku-data-services