ruby on rails - database configuration does not specify adapter

Question

I'm getting this error when I'm trying to connect to a mysql database. The problem is that the application works for weeks, and then randomly I get this message. When I get this error message the application is not able to reconnect to the database until I restart it.

I'm using a configuration file to connect to the database, and the adapter is specified...the database configuration is not generated at runtime.

Do you have any idea on what is going on?

Answer 1

when I tried to run a command line script (let's say 'my_script' here), the same error happened. The reasons were:

1. There is only production environment there.
2. I missed to set RAILS_ENV for the command line.

So, the following is the solution in my case:

$ RAILS_ENV=production my_script