Open System Services ODBC/MX Client Driver (SQL/MX 3.x)

ODBC/MX Client Overview
HP NonStop Open System Services ODBC/MX Client Driver—640328-001
1-12
Unsupported Functionalities
Unsupported Functionalities
The OSS ODBC/MX Client Driver does not support the following functionalities:
•
Windows-specific APIs that are used for driver installation and driver configuration.
•
Dynamic DLL loading while loading OSS ODBC/MX Client Driver, other ODBC
Drivers to external data sources (for example, Oracle or SQLServer).
•
Wide character support.
•
Windows-styled exception handling.
•
Asynchronous semantics. All calls are implemented synchronously. This implies
that SQLCancel can only be invoked on a statement handle after returning from the
last invocation on the handle, not when an operation is running. For example, a
runaway query cannot be stopped by the client application.
•
Cursor library.
•
Translate library.
•
Applications that use windows-specific function class or methods.
Restricted ODBC API Functions
SQLBindParameter
The SQLBindParameter function has these restrictions:
•
SQL_DEFAULT_PARAM is not supported for the pcbValue argument.
•
The SQL_LEN_DATA_AT_EXEC(length) macro is not supported for the pcbValue
argument.
SQLPutData
The SQLPutData function can send data in parts only for the SQL_LONGVARCHAR
data type. For all other data types, only the latest value in the rgbValue argument is
used.
OSS ODBC/MX Client Driver Features
The OSS ODBC/MX Client Driver 3.0 supports the following features:
•
Row size limit is increased to align with maximum block size 32768 for MX tables.
•
A clustering key length up to 2048 bytes is allowed for range and hash partitioned
MX tables.
•
The precision of the NUMERIC data type is extended up to 128 digits for signed
and unsigned values.