Passing MS Reporting Services parameters to Oracle

Question

We're using Reporting Services 2005 to create reports using data from Oracle 8i.
SQL:
SELECT RN, DTTM from Table
WHERE DTTM between :Date1 and :Date 2
AND KEYMAP = :KMAP
The query works in design view with the dates but not when the KEYMAP is added. Error: "ORA-12704 character set mismatch" occurs although the character sets are the same in SQL Server and Oracle. KEYMAP in SQL Server defaults to String and KEYMAP in Oracle is Varchar2.
Any ideas?

Answer 1

We have no control over the Oracle data and data definition. We can only access it to generate reports.If you do not have access to a development instance of the database to develop and test against, then the only other thing that you can see for pointers is the error description from Oracle (since I do not have MS Reporting Services to test with and you do not have Oracle database to experiment on, this may be something to try):
ORA-12704 character set mismatch
Cause: One of the following:
The string operands (other than an NLSPARAMS argument) to an operator or built-in function do not have the same character set.
An NLSPARAMS operand is not in the database character set.
String data with character set other than the database character set is passed to a built-in function not expecting it.
The second argument to CHR() or CSCONVERT() is not CHAR_CS or NCHAR_CS.
A string expression in the VALUES clause of an INSERT statement, or the SET clause of an UPDATE statement, does not have the same character set as the column into which the value would be inserted.
A value provided in a DEFAULT clause when creating a table does not have the same character set as declared for the column.
An argument to a PL/SQL function does not conform to the character set requirements of the corresponding parameter.
Action: Strings declared with NCHAR or NCHAR VARYING do not interoperate with strings declared with CHAR or VARCHAR2. Use TRANSLATE() function to explicitly convert one to the other.