When handling RPC parameters of datatype tinyint, only valid values (between 0 and 255) can be passed back. If the back-end database returns a negative value, that value is passed to the user as a NULL value. Sybase recommends the smallint datatype because it can handle negative numbers correctly.
Oracle stored procedures with long and long raw datatypes are not supported with output parameters. Also, long raw input parameters are not supported.
