In Rails, Couldn't create database for {“adapter”=>“postgresql”,

Question

I\'m trying to run rake db:create or rake db:setup but I get the following error. It\'s strange because rake db:create it\'s working f

Answer 1

Also check you don't have an open connection such as a client or an application connected to the instance. If that happen you will see this in the error

Couldn't create database for {"adapter"=>"xxxx", "database"=>"xxxx", "host"=>"localhost", "username"=>"postgres", "password"=>"xxxxx", "pool"=>5, "timeout"=>5000}
rake aborted!
ActiveRecord::StatementInvalid: PG::ObjectInUse: ERROR:  source database "template1" is being accessed by other users
DETAIL:  There is 1 other session using the database.

Answer 2

I was able to solve this by making sure that the name of my database in the database.yml file was in the following format: appname_development, appname_test, and appname_production. Here is my database.yml file as an example:

    development:
      adapter: postgresql
      database: parallax_development
      username:
      password:

    test:
      adapter: postgresql
      database: parallax_test
      username:
      password:

    production:
      adapter: postgresql
      database: parallax_production
      username:
      password:

Answer 3

In my case this was all I needed: https://dba.stackexchange.com/a/75221

pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start