I'd like to connect to my private space Postgres instance using third party tools.
Databases in a Private Space (using the
private tier plan) cannot be accessed from computers outside of the private space unless the
heroku command line tools are used, meaning that tools like PgAdmin cannot normally be used https://devcenter.heroku.com/articles/heroku-postgres-and-private-spaces#external-connections
To work on these databases, you can use the Heroku command line tools to establish a database console session with
and run SQL commands from there.
Alternatively you have the option of white listing a limited number of Trusted IPs to provide access. These can be managed via the Heroku Dashboard https://devcenter.heroku.com/articles/private-spaces#trusted-ip-ranges
Migrating data from Common Runtime to Private Spaces
We have additional advice on this process here: https://devcenter.heroku.com/articles/migrating-heroku-postgres-databases-to-private-spaces