When you click on a link to a database to which we subscribe, you will be prompted to log in with your campus user name and password / login. (see image below) Once you are logged in, you should have access to all the other library databases until you close that browser, then you will have to log in again.
If you have a URL to a library resource (database or article) that denies you access it may be because you are trying to access from off-campus. You'll need to add a Grace's PROXY PREFIX to the beginning of the URL to go to a log in page that will allow you to log in.
PROXY PREFIX: https://heinz.grace.edu/login?url=