Length of "out char" parameter in stored procedure

Question

I call a SP with an output char parameter, the type is defined as a field in a table -- char(3),
but when calling from stored procedure, it throws an exception:
"ORA-01406: fetched column value was truncated"
the exception happens in line 4:
1. stmt->setSQL("call OUTPUT_CHAR1(:1)");
2. stmt->registerOutParam(1, OCCISTRING, 10);          
3. stmt->execute();
4. string result = stmt->getString(1);
One interesting thing is: if I use the same type as function return value(not output parameter), it works.
Friends, please give me some idea..

Answer 1

Just before commending about anyone it is good idea to go through Oracle Documentation .
Go through the following link
http://www.orafaq.com/faq/what_is_the_difference_between_varchar_varchar2_and_char_data_types
and
http://ora-01406.ora-code.com/ also
Basic difference is CHAR is fixed length and VARCHAR2 variable length which takes more buffer than a fixed length since the length is also stored.
Your error 'ORA-01406' is a common one in any place holder which does not have space to hold enough data. Thats why I told you to change to Varchar2 which is common fix in this case where exact data is not send to client unlike CHAR.
It is good that you are rude to me , so that I learned a lesson not help others much.
If you think the above explanation is also wrong , there are other experts in this forum , they will comment and not you alone