sql INSERT INTOYU语句错误，请各位大神看看帮帮忙！
CREATE TABLE MEMBER4
 (libid char(6) NOT NULL,
  fname char(14),
  lname char(14),
  address char(20),
  phonenumber char(10),
  PRIMARY KEY (libid)
);

之后写INSERT INTO 语句
INSERT INTO MEMBER4 VALUES ('A%B124', 'Sam', 'Son', 'Pgh 15213', '4126457890', TO_DATE('1997/12/01', 'YYYY/MM/DD'), 'M');
INSERT INTO MEMBER4 VALUES ('A%B125', 'Sama', 'Sona', 'Pgh 15213', '4126347891', TO_DATE('1997/12/15', 'YYYY/MM/DD'), 'F');
INSERT INTO MEMBER4 VALUES ('A%B126', 'Cam', 'Con', 'Penn 10214', '6126457780', TO_DATE('1995/06/01', 'YYYY/MM/DD'), 'M');
INSERT INTO MEMBER4 VALUES ('A%B127', 'Cama', 'Cona', 'Penn 10214', '6126467891', TO_DATE('1995/05/01', 'YYYY/MM/DD'), 'F');
INSERT INTO MEMBER4 VALUES ('AxB127', 'Camax', 'Conax', 'PennX 10214', '6126467892', TO_DATE('1995/05/01', 'YYYY/MM/DD'), 'F');
INSERT INTO MEMBER4 VALUES ('A&B124', 'Dan', 'Don', 'Pgh 15215', '4126451190', TO_DATE('1990/11/15', 'YYYY/MM/DD'), 'M');
INSERT INTO MEMBER4 VALUES ('A&B125', 'Dana', 'Dona', 'Pgh 15215', '4126433890', TO_DATE('1990/12/15', 'YYYY/MM/DD'), 'F');
INSERT INTO MEMBER4 VALUES ('A&B126', 'Ram', 'Shyam', 'Penn 10215', '6126454690', TO_DATE('1990/05/10', 'YYYY/MM/DD'), 'M');
INSERT INTO MEMBER4 VALUES ('A&B127', 'Rama', 'Shyama', 'Penn 10215', '6126489890', TO_DATE('1990/01/10', 'YYYY/MM/DD'), 'F');
INSERT INTO MEMBER4 VALUES ('C%D124', 'San', 'Don', 'Pgh 15220', '4126457342', TO_DATE('1990/01/20', 'YYYY/MM/DD'), 'M');
INSERT INTO MEMBER4 VALUES ('C%D125', 'Sana', 'Dona', 'Penn 10220', '6126457341', TO_DATE('1990/05/20', 'YYYY/MM/DD'), 'F');

我用的Oracle 11g运行的，运行前面的五句都没错，都显示 “已创建一行。”
但是运行到第六句
INSERT INTO MEMBER4 VALUES ('AxB127', 'Camax', 'Conax', 'PennX 10214', '6126467892', TO_DATE('1995/05/01', 'YYYY/MM/DD'), 'F');
就会出现 “输入b124的值：”这句话。
而且
INSERT INTO MEMBER4 VALUES ('A&B125', 'Dana', 'Dona', 'Pgh 15215', '4126433890', TO_DATE('1990/12/15', 'YYYY/MM/DD'), 'F');
INSERT INTO MEMBER4 VALUES ('A&B126', 'Ram', 'Shyam', 'Penn 10215', '6126454690', TO_DATE('1990/05/10', 'YYYY/MM/DD'), 'M');
INSERT INTO MEMBER4 VALUES ('A&B127', 'Rama', 'Shyama', 'Penn 10215', '6126489890', TO_DATE('1990/01/10', 'YYYY/MM/DD'), 'F');
这三行分别也出现 “请输入b125的值：” “请输入b126的值：” “请输入b127的值：” 这三句话。
请问这是怎么回事？到底是哪里出了问题？
新手求指导，有点急！灰常感谢！