[DB-SIG] ANN: eGenix mxODBC 3.2.1 - Python ODBC Database Interface
eGenix Team: M.-A. Lemburg
info at egenix.com
Tue Sep 25 09:36:52 CEST 2012
Python ODBC Database Interface
mxODBC is our commercially supported Python extension providing
ODBC database connectivity to Python applications
on Windows, Mac OS X, Unix and BSD platforms
This announcement is also available on our web-site for online reading:
mxODBC provides an easy-to-use, high-performance, reliable and robust
Python interface to ODBC compatible databases such as MS SQL Server,
MS Access, Oracle Database, IBM DB2 and Informix , Sybase ASE and
Sybase Anywhere, MySQL, PostgreSQL, SAP MaxDB and many more:
The "eGenix mxODBC - Python ODBC Database Interface" product is a
commercial extension to our open-source eGenix mx Base Distribution:
The 3.2.1 release of our mxODBC is the latest patch level release of
our popular Python ODBC Interface. In this release, we've included the
following the following enhancements and fixes:
* The next SQLAlchemy release will be fully compatible with mxODBC
3.2.1. Many thanks go to Michael Bayer for working with us to make
Driver Compatibility Enhancements
* Added support for returning SQL Server TIME columns as time value
instead of as string.
* Added a work-around to prevent truncation warnings with the SQL
Server ODBC driver when using .executemany(..., direct=1).
mxODBC 3.2 was released on 2012-08-28. These are the highlights of the
mxODBC 3.2 Feature Highlights
* Switched to unixODBC 2.3.1+ API: mxODBC is now compiled against
unixODBC 2.3.1, which finally removes the problems with the ABI
change between 2.2 and 2.3 by switching to a new library version
* mxODBC connection objects can now be used as context managers to
implicitly commit/rollback transactions.
* mxODBC cursor objects can now be used as context managers to
implicitly close the cursor when leaving the block (regardless of
whether an exception was raised or not)
* mxODBC added support for adjustable .paramstyles. Both 'qmark'
(default) and 'named' styles are supported and can be set on
connections and cursors. The 'named' style allows easier porting of
e.g. Oracle native interface code to mxODBC.
* mxODBC now supports a writable connection.autocommit attribute to
easily turn on/off the connection's auto commit mode.
* mxODBC added support for adjustable TIMESTAMP precision via the new
* mxODBC will round to nearest nanosecond fraction instead of
truncating the value. This will result in fewer conversion errors
due to floating point second values.
* mxODBC's connect APIs Connect() and DriverConnect() support setting
connection options prior to connecting to the database via a new
connection_options parameter. This allows enabling e.g. the MARS
feature in SQL Server Native Client.
* The connection.cursor() constructor now has a new cursor_options
parameters which allows configuring the cursor with a set of cursor
* The .scroll() method supports far more ODBC drivers than before.
* Updated the SQL lookup object to include more ODBC SQL parameter
codes, including special ones for SQL Server and IBM DB2.
* mx.ODBC.Manager will now prefer unixODBC over iODBC. Previous
mxODBC releases used the order iODBC, unixODBC, DataDirect when
looking for a suitable ODBC manager on Unix platforms. unixODBC is
more widely supported nowadays and provides better Unicode support
For the full set of features mxODBC has to offer, please see:
mxODBC 3.2 Driver Compatibility Enhancements
* Added work-around for Oracle Instance Client to prevent use of
direct execution. cursor.executedirect() will still work, but won't
actually use direct execution with the Oracle driver.
* Added work-around for Oracle Instant Client to prevent segfaults in
the driver when querying the cursor.rowcount or cursor.rownumber.
* Added check to make sure that Python type binding mode is not used
with Oracle Instance Client as this can cause segfaults with the
driver and generally doesn't work.
* Added a work-around to have the IBM DB2 driver return correct
* Improved Sybase ASE driver compatibility: this only supports Python
type binding, which is now enabled per default.
* Added work-around for PostgreSQL driver, which doesn't support
* Add support for MS SQL Server ODBC Driver 1.0 for Linux to mxODBC
* Improved compatibility of the mxODBC native Unicode string format
handling with Unix ODBC drivers when running UCS4 builds of Python.
* mxODBC 3.2 now always uses direct execution with the FreeTDS ODBC
driver. This results in better compatibility with SQL Server and
faster execution across the board.
* Add work-around to have FreeTDS work with 64-bit integers outside
the 32-bit signed integer range.
* FreeTDS' .rowcount attribute gave misleading values for
SELECTs. This now always returns -1 (until they hopefully fix the
driver to return usable data).
For the full set of changes please check the mxODBC change log:
mxODBC is available in these three editions:
* The low-cost Standard Edition which provides data connectivity to a
single database type, e.g. just MS SQL Server.
* The Professional Edition, which gives full access to all mxODBC
* The Product Development Edition, which allows including mxODBC in
applications you develop.
Compared to mxODBC 3.0, we have simplified our license terms to
clarify the situation on multi-core and virtual machines. In most
cases, you no longer need to purchase more than one license per
processor or virtual machine, scaling down the overall license costs
significantly compared to earlier mxODBC releases.
For a complete overview of the new editions, please see the product page.
The download archives and instructions for installing the package can
be found at:
In order to use the eGenix mxODBC package you will first need to
install the eGenix mx Base package:
Users are encouraged to upgrade to this latest mxODBC release to
benefit from the new features and updated ODBC driver support.
We have taken special care, not to introduce backwards incompatible
changes, making the upgrade experience as smooth as possible.
Customers who have purchased mxODBC 3.2 license can continue to use
their licenses with this patch level release.
Customers who have purchased mxODBC 2.x, 3.0 or 3.1 licenses, can
benefit from upgrade discounts. We will give out 20% discount coupons
going from mxODBC 2.x to 3.2 and 50% coupons for upgrades from mxODBC
3.x to 3.2. After upgrade, use of the original license from which you
upgraded is no longer permitted.
Please contact the eGenix.com Sales Team at sales at egenix.com with your
existing license serials for details for an upgrade discount coupon.
If you want to try the new release before purchace, you can request
30-day evaluation licenses by visiting our web-site
or by writing to sales at egenix.com, stating your name (or the name of
the company) and the number of eval licenses that you need.
Commercial support for this product is available from eGenix.com.
for details about our support offerings.
About Python (http://www.python.org/):
Python is an object-oriented Open Source programming language
which runs on all modern platforms. By integrating ease-of-use,
clarity in coding, enterprise application connectivity and rapid
application design, Python establishes an ideal programming
platform for today's IT challenges.
About eGenix (http://www.egenix.com/):
eGenix is a software project, consulting and product company
focusing on expert services and professional quality products for
companies, Python users and developers.
Professional Python Services directly from the Source (#1, Sep 25 2012)
>>> Python/Zope Consulting and Support ... http://www.egenix.com/
>>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/
2012-10-29: PyCon DE 2012, Leipzig, Germany ... 34 days to go
2012-10-23: Python Meeting Duesseldorf ... 28 days to go
2012-09-18: Released mxODBC Zope DA 2.1.0 ... http://egenix.com/go32
2012-08-28: Released mxODBC 3.2.0 ... http://egenix.com/go31
eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48
D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
Registered at Amtsgericht Duesseldorf: HRB 46611
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