diff --git a/obj.go b/obj.go
index 372e0bf..4ef0bbd 100644
--- a/obj.go
+++ b/obj.go
@@ -65,6 +65,15 @@ func setObjSubTypeId(objId int64, objSubTypeID64 int64) error {
 	return err
 }
 
+func objAddName(objID64 int64, name string) error {
+	stmt, err := db.Prepare(`INSERT INTO obj_name (obj_id, name, priority)
+	                         SELECT ? obj_id, ? name, (SELECT MAX(priority) + 1 FROM obj_name WHERE obj_id = ?) priority FROM DUAL;`)
+
+	_, err := stmt.Exec(objID64, name, objID64)
+
+	return err
+}
+
 func addObjMsg(msgID64 int64, msgChatID64 int64, msgUserID64 int64, msgSenderUserID64 int64, msgDate time.Time, msgText string) (int64, error) {
 	tx, err := db.Begin()
 	logOnError(err, "addObjMsg : start transaction")
@@ -528,6 +537,21 @@ func addObjXP(userID64 int64, expNow int64, expLvl int64, level int64, date time
 }
 
 func addObjItem(code string, name string, itemTypeID64 int64, weight int) (int64, error) {
+	if v, ok := cacheObjItem.Load(code); ok {
+		item := v.(ChatWarsItem)
+		if v, ok = cacheObjItem.Load(name); ok {
+			// obj is already added ?
+			return item.ObjID64, nil
+		} else {
+			err := objAddName(item.ObjID64, name)
+			if err != nil {
+				return 0, nil
+			} else {
+				return item.ObjID64, nil
+			}
+
+		}
+	}
 	tx, err := db.Begin()
 	logOnError(err, "addObjItem : start transaction")
 	if err != nil {
@@ -550,8 +574,8 @@ func addObjItem(code string, name string, itemTypeID64 int64, weight int) (int64
 		return 0, err
 	}
 
-	stmt, err := tx.Prepare(`INSERT INTO obj_item	(obj_id, intl_id, name, weight)
-							 VALUES 				(?,      ?,       ?,    ?);`)
+	stmt, err := tx.Prepare(`INSERT INTO obj_item	(obj_id, intl_id, weight)
+							 VALUES 				(?,      ?,       ?);`)
 	logOnError(err, "addObjItem : prepare insert obj_item")
 	if err != nil {
 		err2 := tx.Rollback()
@@ -560,7 +584,7 @@ func addObjItem(code string, name string, itemTypeID64 int64, weight int) (int64
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(objId, code, name, weight)
+	_, err = stmt.Exec(objId, code, weight)
 	logOnError(err, "addObjItem : exec insert obj_item")
 	if err != nil {
 		err2 := tx.Rollback()
@@ -574,6 +598,9 @@ func addObjItem(code string, name string, itemTypeID64 int64, weight int) (int64
 		return 0, err
 	}
 
+	err = objAddName(objId, name)
+	logOnError(err, "addObjItem : add name")
+
 	c := new(ChatWarsItem)
 	c.ObjID64 = objId
 	c.Code = code
@@ -670,7 +697,7 @@ func loadObjItem() error {
 
 	cacheObjItem = new(sync.Map)
 
-	items, err := db.Query(`SELECT oi.obj_id, oi.intl_id, oi.name, oi.weight FROM obj_item oi;`)
+	items, err := db.Query(`SELECT oi.obj_id, oi.intl_id, on.name, oi.weight FROM obj_item oi, obj_name on WHERE on.obj_id = oi.obj_id AND on.priority = 0;`)
 	if err != nil {
 		return err
 	}
@@ -690,5 +717,29 @@ func loadObjItem() error {
 		cacheObjItem.Store(name, *c)
 	}
 
+	items2, err := db.Query(`SELECT oi.obj_id, oi.intl_id, on.name, oi.weight FROM obj_item oi, obj_name on WHERE on.obj_id = oi.obj_id AND on.priority > 0;`)
+	if err != nil {
+		return err
+	}
+	defer items2.Close()
+
+	for items2.Next() {
+		err = items2.Scan(&id, &intl_id, &name, &weight)
+		if err != nil {
+			return err
+		}
+
+		if v, ok := cacheObjItem.Load(intl_id); ok {
+			c := new(ChatWarsItem)
+			c.ObjID64 = id
+			c.Code = intl_id
+			c.Name = name
+			c.Weight = weight
+			cacheObjItem.Store(name, *c)
+		} else {
+			log.Printf("loadObjItem : orphaned obj_name for `%s` : %s.\n", intl_id, name)
+		}
+	}
+
 	return nil
 }
diff --git a/sql.go b/sql.go
index a01b058..2c07386 100644
--- a/sql.go
+++ b/sql.go
@@ -273,7 +273,6 @@ func initDB() {
 	_, err = db.Exec(`CREATE TABLE obj_item (
 							 obj_id			BIGINT UNSIGNED NOT NULL
 							,intl_id        VARCHAR(32)
-							,name           VARCHAR(80)
 							,weight         SMALLINT NOT NULL
 							,FOREIGN KEY (obj_id) REFERENCES obj(id) ON DELETE CASCADE
 							,UNIQUE KEY (intl_id)
@@ -332,6 +331,16 @@ func initDB() {
 	failOnError(err, "initDB : create table obj_job")
 	log.Println("initDB : obj_job created ...")
 
+	_, err = db.Exec(`CREATE TABLE obj_name (
+							 obj_id			BIGINT UNSIGNED NOT NULL
+							,name           VARCHAR(80)
+							,priority       INT UNSIGNED NOT NULL
+							,FOREIGN KEY (obj_id) REFERENCES obj(id) ON DELETE CASCADE
+							,UNIQUE KEY(name)
+						  ) ENGINE = InnoDB CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci;`)
+	failOnError(err, "initDB : create table obj_name")
+	log.Println("initDB : obj_name created ...")
+
 	_, err = db.Exec(`INSERT INTO code_obj_type (id, intl_id, name)
 						  VALUES (` + strconv.Itoa(objTypeUser) + `, "user", "User")
 						        ,(` + strconv.Itoa(objTypeGuild) + `, "guild", "Guild")