插入语句：insert into customers(customer_id,firt_name,list_name,dob,phone) values(2,'a','b','2000-12-01','000000');

解决方式：insert into customers(customer_id,firt_name,list_name,dob,phone) values(2,'a','b',to_date('2000-12-01','yyyy-mm-dd'),'000000');