system going down / error code

MSConsultingKonstanz

Hi,

the system crashed for no apparent reason, error code:

Warning: mysqli_query(): (HY000/1): Can't create/write to file '/DBDATA/rdbng/tmp/#sql_26a7_0.MYI' (Errcode: 28 - No space left on device) in /homepages/20/d436162699/htdocs/BETA/wordpress/wp-includes/wp-db.php on line 2033

Did you know what the problem was / how to fix?

Line 2033 and following:

      if ( ! empty( $this->dbh ) && $this->use_mysqli ) {

         $this->result = mysqli_query( $this->dbh, $query );

      } elseif ( ! empty( $this->dbh ) ) {

         $this->result = mysql_query( $query, $this->dbh );

      }

      $this->num_queries++;