An Error Was Encountered

Connection to the database has been failed. Please check login credentials: DB host, DB port, username, and password. Also check that database server is up and running. If that won't help, please contact support for assistance and forward the following error message to them:

Error: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. in C:\inetpub\wwwroot\admin\application\ci_zend\Zend\Db\Adapter\Mysqli.php line 368