Can't Select Database tiba-tiba?

Hai teman2 salam kenal,

belakangan ini aku kesulitan untuk masuk ke dashboard wp-admin dan selalu mengalami wordpress error seperti ini, ada yang bisa bantu?

saat ini aku menggunakan wp versi terbaru 3.7.1 dan hosting di hostgator.

Can’t select database

We were able to connect to the database server (which means your username and password is okay) but not able to select the mullie_wrdp1 database.

Are you sure it exists?
Does the user xxx have permission to use the xxx database?
On some systems the name of your database is prefixed with your username, so it would be like username_xxx. Could that be the problem?

If you don’t know how to set up a database you should contact your host. If all else fails you may find help at the WordPress Support Forums.