23/3 PLS-00201：必须声明标识符'DBMS_OUPUT.PUT_LINE'

Question

我不知道如何解决上面的错误。我该如何申报？我创建了下面的程序，允许乘客购买地铁卡并将其添加到现有帐户中。输入包括账户id、初始余额

SET SERVEROUTPUT ON
-- procedure to buy new metro, output error if account already exists. 
CREATE OR REPLACE PROCEDURE NewCard (
input_Account_ID IN varchar,
input_Balance IN varchar,
input_age IN varchar
)
IS 
acct varchar(255);
-- compare the input account id to see if it exists in the table
CURSOR S1 is SELECT Account_id from Rider_Account where ACCOUNT_ID = input_Account_ID;
BEGIN
--THIS MEANS THE RECORD EXISTS
open S1;
LOOP
FETCH S1 into acct; 
EXIT WHEN S1%notfound; 
END LOOP;
-- go through the records
IF (acct = input_Account_ID) THEN
Dbms_ouput.Put_line('Account exists');
ELSE 
BEGIN 
INSERT into Metro_Card(Card_ID, Account_ID, Balance) VALUES(Card_Sequence.NEXTVAL,input_Account_ID, input_Balance); 
INSERT into rider_account(Age) VALUES (input_age);
END;
END IF;  
IF (input_age <= 12) THEN
UPDATE Metro_Card
SET Discount_type = 2
Where Metro_Card.Account_ID = input_Account_ID; 
ELSIF (input_age >= 65) THEN
UPDATE Metro_Card 
SET Discount_type = 3
Where Metro_Card.Account_ID = input_Account_ID;
ELSE 
UPDATE Metro_Card 
SET Discount_type = 1
Where Metro_Card.Account_ID = input_Account_ID;
END IF;
END;

Answer 1

它不是

Dbms_ouput.Put_line('Account exists');

但是

Dbms_ouTput.Put_line('Account exists'); 
-
^
missing "T"