While working on rails with mysql as database you may got error like this “This application has failed to start because libmysql.dll was not found. Re-installing the application may fix this problem” while executing the code ‘rake db:create’. If that so, then fallow the fallowing steps:
1. type the command in the console
gem install mysql
(this is for windows, if you are using linux os add sudo at the beginning)
2. Copy the libmysql.dll found in the mysql installation directory (mysqlbin) and paste it in your ruby installation directory (rubybin).
3. Restart the server.
thats all, it will work now.