我的Oracle SQL语句有什么问题？我不断收到此处不允许的列错误？

   //get parameters from the request
 String custID=request.getParameter(\"cust_ID\");
 String saleID=request.getParameter(\"sale_ID\");
 String firstName=request.getParameter(\"first_Name\");
 String mInitial=request.getParameter(\"mI\");
 String lastName=request.getParameter(\"last_Name\");
 String streetName=request.getParameter(\"street\");
 String city=request.getParameter(\"city\");
 String state=request.getParameter(\"state\");
 String zipCode=request.getParameter(\"zip_Code\");
 String DOB=request.getParameter(\"DOB\");
 String agentID=request.getParameter(\"agent_ID\");
 String homePhone=request.getParameter(\"home_Phone\");
 String cellPhone=request.getParameter(\"cell_Phone\");
 String profession=request.getParameter(\"profession\");
 String employer=request.getParameter(\"emoployer\");
 String referrer=request.getParameter(\"referrer\");

 stmt.executeUpdate(\"INSERT INTO customer 
                         (cust_ID, sale_ID, first_Name, mI, last_Name, street_Name, city, state, zip_Code, DOB, agent_ID, home_Phone, cell_Phone, profession, employer, referrer)\"
                    + \" VALUES 
                         (custID, saleID, firstName, mInitial, lastName, streetName, city, state, zipCode, DOB, agentID, homePhone, cellPhone, profession, employer, referrer)\");

   CREATE TABLE customer
       (cust_ID     NUMBER          NOT NULL,
        sale_ID             NUMBER          NOT NULL,
        first_Name      VARCHAR2(30)        NOT NULL,
        mI          VARCHAR2(2)         ,
        last_Name       VARCHAR2(50)        NOT NULL,
        street_Name     VARCHAR2(50)        NOT NULL,
        city            VARCHAR2(30)        NOT NULL,
        state           VARCHAR2(2)     NOT NULL,
        zip_Code        VARCHAR2(5)     NOT NULL,
        DOB         DATE            ,
        agent_ID        NUMBER              ,
        home_Phone      VARCHAR2(12)        UNIQUE,         
        cell_Phone      VARCHAR2(12)        UNIQUE,
        profession      VARCHAR2(30)            ,
        employer        VARCHAR2(30)            ,
        referrer        VARCHAR2(30)            
     );    

INSERT INTO customer 
VALUES (primary_ID.nextval,17,\'Kito\',\'M\',\'Bradford\',\'123 DeLancy Lane\',\'Wabash\',\'TX\',\'12345\',\'01-JAN-69\',1,\'222-222-2222\',\'301-555-6874\',\'software engineer\',\'HPL\', NULL);

INSERT INTO customer 
VALUES (primary_ID.nextval,18,\'Morpheus\',\' \',\'Smith\',\'1289 Matrix Lane\',\'Idaho\', \'NE\', \'45678\',\'06-JUN-72\',2,\'321-654-9877\',\'258-852-9635\',\'doctor\', \'The OC\', NULL);

SELECT * FROM customer;