c++报错:Input string value is too large to fit into the buffer
[DBERR 错误：Input string value is too large to fit into the buffer :
insert into temp_info (c1,c2,c3,c4,c5,c6,c7) values(:c1 ,:c2,:c3,to_date(:c4,'YYYYMMDDHH24MISS' ),:c5,:c6,:c7) : Variable: :c7<CHAR>, datatype in operator <</>>: CHAR]

数据库中针对c7是这样定义的：
create table temp_info (
c1 NUMBER(18) not null,
c2 NUMBER(5) not null,
c3 VARCHAR2(10) not null,
c4 DATE not null,
c5 VARCHAR2(20) not null,
c6 NUMBER(5) not null,
c7 VARCHAR2(2047)
)

程序插入时：
insert into temp_info (c1,c2,c3,c4,c5,c6,c7) values(:c1<LONG>,:c2<int>,:c3<char[10+1]>,to_date(:c4<char[15]>,'YYYYMMDDHH24MISS'\
),:c5<char[20+1]>,:c6<INT>,:c7<char[2047+1]>)

[解决办法]