Fatal error: Can't create/write to file '/var/tmp/#sqlc65d_1213f21_1.MYD' (Errcode: 23)

Query: SELECT ID, Placement, Size, URL_LNG1, Own_window, MV_Active, Medium_Type, Size, Medium_File_LNG1, TV_Active, TV_File, TV_Heading_LNG1, TV_Heading_Color, TV_Heading_BG_Color, TV_Text_LNG1, TV_Text_Color, TV_Text2_LNG1, TV_Text2_BG_Color, HV_Active, HV_HTML_LNG1 FROM GDE_Banners WHERE Active = 1 AND Placement = '200' AND IF (ISNULL(Date_Start), 1, (UNIX_TIMESTAMP(Date_Start) <= UNIX_TIMESTAMP())) AND IF (ISNULL(Date_Finish), 1, (UNIX_TIMESTAMP(Date_Finish) >= UNIX_TIMESTAMP())) ORDER BY iIndex ASC , RAND() ASC LIMIT 100 in /usr/local/www/data/ledy.cz/eshop/GE/lib/GE.MySQL.lib.php on line 238