I'm thoroughly confused. It seems that the connection is complaining
about a "[Microsoft][ODBC Driver Manager]" issue when my DSN is clearly
using the "Adaptive Server Enterprise" driver.
<https://lh3.googleusercontent.com/-eZTUkmqUiFY/V1HtJfYD8vI/AAAAAAAAAq4/5jcXsHAOaE0FJIT-RXrHjik_J5_1vXvTwCLcB/s1600/driver.jpg>
Code:
Python 3.5.1 |Continuum Analytics, Inc.| (default, Feb 16 2016,
09:49:46) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyodbc
>>> import sqlalchemy
>>> def odbc_conn():
... return pyodbc.connect('DSN=MyDSN;UID=my_user;PWD=my_pwd')
...
>>> eng = sqlalchemy.create_engine('sybase+pyodbc://',
creator=odbc_conn(), echo=True)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 2, in odbc_conn
pyodbc.Error: ('IM014', '[IM014] [Microsoft][ODBC Driver Manager]
The specified DSN contains an architecture mismatch between the Dr
iver and Application (0) (SQLDriverConnect)')
>>>
On Friday, June 3, 2016 at 10:21:18 AM UTC-5, Mike Bayer wrote:
On 06/03/2016 11:15 AM, Brad Hudson wrote:
> Mike:
>
> First, thank you very much for the response. However, it doesn't
appear
> to be an issue with the connection string, but with the
automap_base()
> function itself. Please see my modified results below:
this is a simple connection failure. AutomapBase has no connectivity
features within it and it is merely calling upon the Engine being
passed
for connectivity.
create your engine, then do this:
conn = engine.connect()
conn.execute("SELECT 1")
that succeeds ?
From the error message, it looks like the pyodbc connection just isn't
finding a host. Confirm your pyodbc.connect() by itself also
succeeds?
>
> Python 3.5.1 |Continuum Analytics, Inc.| (default, Feb 16 2016,
> 09:49:46) [MSC v.1900 64 bit (AMD64)] on win32
> Type "help", "copyright", "credits" or "license" for more
information.
> >>> import pyodbc
> >>> from sqlalchemy.ext.automap import automap_base
> >>> from sqlalchemy.orm import Session
> >>> from sqlalchemy import create_engine
> >>> def creator():
> ... return pyodbc.connect('driver={Adaptive Server
> Enterprise};server=myurl.url.com
<http://myurl.url.com>;port=8985;database=MyDB;user=sa;password=pass')
> ...
> >>> engine = create_engine("sybase+pyodbc://", creator=creator)
> >>> Base = automap_base()
> >>> Base.prepare(engine, reflect=True)
> Traceback (most recent call last):
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 1044, in _do_get
> return self._pool.get(wait, self._timeout)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\queue.py",
> line 145, in get
> raise Empty
> sqlalchemy.util.queue.Empty
>
> During handling of the above exception, another exception
occurred:
>
> Traceback (most recent call last):
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
> line 2074, in _wrap_pool_connect
> return fn()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 318, in unique_connection
> return _ConnectionFairy._checkout(self)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 713, in _checkout
> fairy = _ConnectionRecord.checkout(pool)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 480, in checkout
> rec = pool._do_get()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 1060, in _do_get
> self._dec_overflow()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\langhelpers.py",
> line 60, in __exit__
> compat.reraise(exc_type, exc_value, exc_tb)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
> line 186, in reraise
> raise value
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 1057, in _do_get
> return self._create_connection()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 323, in _create_connection
> return _ConnectionRecord(self)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 449, in __init__
> self.connection = self.__connect()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 607, in __connect
> connection = self.__pool._invoke_creator(self)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 285, in <lambda>
> return lambda crec: creator()
> File "<stdin>", line 2, in creator
> pyodbc.Error: ('IM002', '[IM002] [Microsoft][ODBC Driver Manager]
> Data source name not found and no default driver specified (0)
(SQ
> LDriverConnect)')
>
> The above exception was the direct cause of the following
exception:
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\ext\automap.py",
> line 743, in prepare
> autoload_replace=False
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\sql\schema.py",
> line 3602, in reflect
> with bind.connect() as conn:
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
> line 2018, in connect
> return self._connection_cls(self, **kwargs)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
> line 72, in __init__
> if connection is not None else engine.raw_connection()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
> line 2104, in raw_connection
> self.pool.unique_connection, _connection)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
> line 2078, in _wrap_pool_connect
> e, dialect, self)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
> line 1405, in _handle_dbapi_exception_noconnectio
> n
> exc_info
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
> line 202, in raise_from_cause
> reraise(type(exception), exception, tb=exc_tb, cause=cause)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
> line 185, in reraise
> raise value.with_traceback(tb)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
> line 2074, in _wrap_pool_connect
> return fn()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 318, in unique_connection
> return _ConnectionFairy._checkout(self)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 713, in _checkout
> fairy = _ConnectionRecord.checkout(pool)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 480, in checkout
> rec = pool._do_get()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 1060, in _do_get
> self._dec_overflow()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\langhelpers.py",
> line 60, in __exit__
> compat.reraise(exc_type, exc_value, exc_tb)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
> line 186, in reraise
> raise value
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 1057, in _do_get
> return self._create_connection()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 323, in _create_connection
> return _ConnectionRecord(self)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 449, in __init__
> self.connection = self.__connect()
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 607, in __connect
> connection = self.__pool._invoke_creator(self)
> File
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> line 285, in <lambda>
> return lambda crec: creator()
> File "<stdin>", line 2, in creator
> sqlalchemy.exc.DBAPIError: (pyodbc.Error) ('IM002', '[IM002]
> [Microsoft][ODBC Driver Manager] Data source name not found
and no defa
> ult driver specified (0) (SQLDriverConnect)')
> >>>
>
>
>
> On Friday, June 3, 2016 at 9:23:48 AM UTC-5, Mike Bayer wrote:
>
>
> this is supported by just passing all key/value pairs:
>
>
> >>> from sqlalchemy.dialects.sybase import pyodbc
> >>> dialect = pyodbc.SybaseDialect_pyodbc()
> >>> from sqlalchemy.engine import url
> >>> u =
>
url.make_url("sybase+pyodbc:///?user=myuser&password=mypwd&host=my.db.server&database=mydb&driver=FreeTDS&port=1433&TDS_Version=8.0")
>
> >>> dialect.create_connect_args(u)
>
[['DRIVER={FreeTDS};Server=my.db.server;Database=mydb;UID=myuser;PWD=mypwd;TDS_Version=8.0;port=1433'],
>
> {}]
>
>
> also, you can always bypass the URL process entirely using
creator:
>
> import pyodbc
>
> def creator():
> return pyodbc.connect(<any parameters you want>)
>
> engine = create_engine("sybase+pyodbc://", creator=creator)
>
>
> finally, ODBC is intended to be used with data source names
(DSN)s so
> the best approach would be to use one, FreeTDS supports these
directly:
>
> http://www.freetds.org/userguide/odbcinionly.htm
<http://www.freetds.org/userguide/odbcinionly.htm>
> <http://www.freetds.org/userguide/odbcinionly.htm
<http://www.freetds.org/userguide/odbcinionly.htm>>
>
>
> when you make an ODBC DSN, now you can use tsql to test your
DSNs.
>
>
>
>
>
> On 06/03/2016 09:19 AM, Brad Hudson wrote:
> > Can anyone help with forming a proper connection to Sybase ASE
> 15.7? I
> > have tried variations of the following unsuccessfully using
examples
> > from the following URLs:
> >
> > *
>
http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds
<http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds>
>
<http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds
<http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds>>
>
> >
>
<http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds
<http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds>
>
<http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds
<http://stackoverflow.com/questions/4493614/sqlalchemy-equivalent-of-pyodbc-connect-string-using-freetds>>>
>
> > *
>
http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html
<http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html>
>
<http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html
<http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html>>
> >
>
<http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html
<http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html>
>
<http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html
<http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/automap.html>>>
> (Basic
> > Use)
> >
> > Code:
> >
> > Python 3.5.1 |Continuum Analytics, Inc.| (default, Feb
16 2016,
> > 09:49:46) [MSC v.1900 64 bit (AMD64)] on win32
> > Type "help", "copyright", "credits" or "license" for more
> information.
> > >>> import pyodbc
> > >>> from sqlalchemy.ext.automap import automap_base
> > >>> from sqlalchemy.orm import Session
> > >>> from sqlalchemy import create_engine
> > >>> Base = automap_base()
> > >>> cxnstr = 'Driver={Adaptive Server
> > Enterprise};server=myserver.url.com
<http://myserver.url.com> <http://myserver.url.com>
> >
>
<http://myserver.url.com/>;port=8985;db=MyDB;uid=sa;pwd=restriced'
> > >>> engine =
> >
create_engine('sybase+pyodbc:///?odbc_connect={}'.format(cxnstr))
> > >>> Base.prepare(engine, reflect=True)
> > Traceback (most recent call last):
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 1044, in _do_get
> > return self._pool.get(wait, self._timeout)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\queue.py",
>
> > line 145, in get
> > raise Empty
> > sqlalchemy.util.queue.Empty
> >
> > During handling of the above exception, another exception
> occurred:
> >
> > Traceback (most recent call last):
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
>
> > line 2074, in _wrap_pool_connect
> > return fn()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 318, in unique_connection
> > return _ConnectionFairy._checkout(self)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 713, in _checkout
> > fairy = _ConnectionRecord.checkout(pool)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 480, in checkout
> > rec = pool._do_get()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 1060, in _do_get
> > self._dec_overflow()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\langhelpers.py",
>
> > line 60, in __exit__
> > compat.reraise(exc_type, exc_value, exc_tb)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
>
> > line 186, in reraise
> > raise value
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 1057, in _do_get
> > return self._create_connection()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 323, in _create_connection
> > return _ConnectionRecord(self)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 449, in __init__
> > self.connection = self.__connect()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 607, in __connect
> > connection = self.__pool._invoke_creator(self)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\strategies.py",
>
> > line 97, in connect
> > return dialect.connect(*cargs, **cparams)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\default.py",
>
> > line 385, in connect
> > return self.dbapi.connect(*cargs, **cparams)
> > pyodbc.Error: ('IM002', '[IM002] [Microsoft][ODBC Driver
Manager]
> > Data source name not found and no default driver
specified (0)
> (SQ
> > LDriverConnect)')
> >
> > The above exception was the direct cause of the following
> exception:
> >
> > Traceback (most recent call last):
> > File "<stdin>", line 1, in <module>
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\ext\automap.py",
>
> > line 743, in prepare
> > autoload_replace=False
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\sql\schema.py",
>
> > line 3602, in reflect
> > with bind.connect() as conn:
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
>
> > line 2018, in connect
> > return self._connection_cls(self, **kwargs)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
>
> > line 72, in __init__
> > if connection is not None else engine.raw_connection()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
>
> > line 2104, in raw_connection
> > self.pool.unique_connection, _connection)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
>
> > line 2078, in _wrap_pool_connect
> > e, dialect, self)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
>
> > line 1405, in _handle_dbapi_exception_noconnectio
> > n
> > exc_info
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
>
> > line 202, in raise_from_cause
> > reraise(type(exception), exception, tb=exc_tb,
cause=cause)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
>
> > line 185, in reraise
> > raise value.with_traceback(tb)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\base.py",
>
> > line 2074, in _wrap_pool_connect
> > return fn()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 318, in unique_connection
> > return _ConnectionFairy._checkout(self)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 713, in _checkout
> > fairy = _ConnectionRecord.checkout(pool)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 480, in checkout
> > rec = pool._do_get()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 1060, in _do_get
> > self._dec_overflow()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\langhelpers.py",
>
> > line 60, in __exit__
> > compat.reraise(exc_type, exc_value, exc_tb)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\util\compat.py",
>
> > line 186, in reraise
> > raise value
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 1057, in _do_get
> > return self._create_connection()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 323, in _create_connection
> > return _ConnectionRecord(self)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 449, in __init__
> > self.connection = self.__connect()
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\pool.py",
> > line 607, in __connect
> > connection = self.__pool._invoke_creator(self)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\strategies.py",
>
> > line 97, in connect
> > return dialect.connect(*cargs, **cparams)
> > File
> >
>
"C:\brad\anaconda\envs\db-app\lib\site-packages\sqlalchemy\engine\default.py",
>
> > line 385, in connect
> > return self.dbapi.connect(*cargs, **cparams)
> > sqlalchemy.exc.DBAPIError: (pyodbc.Error) ('IM002',
'[IM002]
> > [Microsoft][ODBC Driver Manager] Data source name not found
> and no defa
> > ult driver specified (0) (SQLDriverConnect)')
> > >>>
> >
> > --
> > You received this message because you are subscribed to the
Google
> > Groups "sqlalchemy" group.
> > To unsubscribe from this group and stop receiving emails
from it,
> send
> > an email to sqlalchemy+...@googlegroups.com <javascript:>
> > <mailto:sqlalchemy+unsubscr...@googlegroups.com
<javascript:> <javascript:>>.
> > To post to this group, send email to sqlal...@googlegroups.com
> <javascript:>
> > <mailto:sqlal...@googlegroups.com <javascript:>>.
> > Visit this group at
https://groups.google.com/group/sqlalchemy
<https://groups.google.com/group/sqlalchemy>
> <https://groups.google.com/group/sqlalchemy
<https://groups.google.com/group/sqlalchemy>>.
> > For more options, visit https://groups.google.com/d/optout
<https://groups.google.com/d/optout>
> <https://groups.google.com/d/optout
<https://groups.google.com/d/optout>>.
>
> --
> You received this message because you are subscribed to the Google
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> To unsubscribe from this group and stop receiving emails from it,
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