Question

When I run the command heroku run rake db:migrate for deploy my app to Heroku, I get this error:

PG::Error: ERROR:  relation "roles" does not exist
:             SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a.attnotnull
              FROM pg_attribute a LEFT JOIN pg_attrdef d
                ON a.attrelid = d.adrelid AND a.attnum = d.adnum
             WHERE a.attrelid = '"roles"'::regclass
               AND a.attnum > 0 AND NOT a.attisdropped
             ORDER BY a.attnum

Tasks: TOP => db:reset => environment
(See full trace by running task with --trace)

Also I have tried heroku run rake db:reset or heroku restart, but didn’t help me.

The RoR & PostgreSQL version I used in the app is

gem 'rails', '3.2.1'
gem 'pg', '~> 0.13.2'

On localhost is working everything well, but because of this error I can migrate my database to Heroku.

Could anyone give me please some advice, how to solve this problem?

Thank you so much

Answer 1

rails rake commands are restricted on Heroku. You can use ‘heroku pg’ to manipulate the db. ‘heroku pg help’ to see all available commands.

Try

heroku pg:reset SHARED_DATABASE

Then: heroku run rake db:migrate

Then restart: heroku restart