I'm trying to start dbconsole by rails, but it's starting too long

I have a problem. I can’t run dbconsole. After I enter “rails dbconsole” there is nothing happens. P.S Sorry for my english if I wrote something wrong.

Is your DB local or remote?

Can you reach your DB from a terminal window using the settings in your database.yml?

Do you see anything in the DB query log when you attempt to open the console?

It would also help to provide Ruby/Rails/database versions when asking this kind of question.