I started a project on a Hobby Dev plan (free, limit 10,000 rows), and then later needed to upgrade it to Hobby Basic ($9/month, limit 10,000,000 rows).
After assigning the new database, I had two databases attached to the application. They looked something like this:
- HEROKU_POSTGRESQL_OLIVE (postgresql-dimensional-3321) Old, free-tier (Hobby Dev) database
- HEROKU_POSTGRESQL_COPPER (postgresql-perpendicular-6628) New Hobby Basic, $9/month database
Here's how I ran the upgrade:
heroku maintenance:on
heroku pg:copy DATABASE_URL HEROKU_POSTGRESQL_COPPER_URL
heroku pg:promote HEROKU_POSTGRESQL_COPPER
heroku maintenance:off
The pg:promote command set the DATABASE_URL environment variable to the new database.
More instructions: https://devcenter.heroku.com/articles/upgrading-heroku-postgres-databases#upgrade-with-pg-copy-default
I set up nightly backups of the database using the following command:
heroku pg:backups schedule DATABASE_URL --at '02:00 America/Los_Angeles'
To list available backus, use:
heroku pg:backups
To fetch the most recent backup and restore it into a local Postgres:
curl -o latest.dump `heroku pg:backups public-url`
createdb mynewdb
pg_restore --verbose --clean --no-acl --no-owner \
-h localhost -U simonw -d mynewdb latest.dump
HEROKU_POSTGRESQL_COPPER_URL -> what is this for? I created a Python django heroku app and a postgre db addon in another app. But this HEROKU_POSTGRESQL_COPPER_URL came? Can I delete this? Otherwise, I have to pay for two databases