I'm using ActivePython 2.7.2.5 on Windows 7.
While trying to connect to a sql-server database with the pyodbc module using the below code, I receive the subsequent Traceback. Any ideas on what I'm doing wrong?
CODE:
import pyodbc
driver = 'SQL Server'
server = '**server-name**'
db1 = 'CorpApps'
tcon = 'yes'
uname = 'jnichol3'
pword = '**my-password**'
cnxn = pyodbc.connect('DRIVER={SQL Server};SERVER=server;DATABASE=db1;UID=uname;PWD=pword;Trusted_Connection=yes')
cursor = cnxn.cursor()
cursor.execute("select * from appaudit_q32013")
rows = cursor.fetchall()
for row in rows:
print row
TRACEBACK:
Traceback (most recent call last):
File "pyodbc_test.py", line 9, in <module>
cnxn = pyodbc.connect('DRIVER={SQL Server};SERVER=server;DATABASE=db1;UID=uname;PWD=pword;Trusted_Connection=yes')
pyodbc.Error: ('08001', '[08001] [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17) (SQLDriverConnect); [01000] [Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionOpen (Connect()). (53)')
You're using a connection string of 'DRIVER={SQL Server};SERVER=server;DATABASE=db1;UID=uname;PWD=pword;Trusted_Connection=yes', you're trying to connect to a server called server, a database called db1, etc. It doesn't use the variables you set before, they're not used.
It's possible to pass the connection string parameters as keyword arguments to the connect function, so you could use:
cnxn = pyodbc.connect(driver='{SQL Server}', host=server, database=db1,
trusted_connection=tcon, user=uname, password=pword)
I had the same error message and in my case the issue was the [SQL Server] drivers required TLS 1.0 which is disabled on my server. Changing to the newer version of the SNAC, SQL Server Native Client 11.0 fixed the problem.
So my connection string looks like:
cnxn = pyodbc.connect(driver='{SQL Server Native Client 11.0}',
host=server, database=db1, trusted_connection=tcon,
user=uname, password=pword)
I had faced this error due to another reason.
It was because my server had a "port" apart from the address.
I could fix that by assigning the following value to "Server" parameter of the connection string.
"...;Server=<server_name>,<port#>;..."
Note that it is a 'comma' and not 'colon'/'period'
cnxn = pyodbc.connect(driver='{SQL Server}', host=server, database=db1,
user=uname, password=pword)
print(cnxn)
I removed "Trusted_Connection" part and it worked for me.
Different security risks exist with either method. If you use Sql Server authentication you expose your userid/password in the code. But at least you process with the same credentials. If you use Windows authentication you have to insure all the possible users are setup with the right permission in the Sql server. With Sql authentication you can setup just one user but multiple people can use that one Sql User permissions wise.
I had the same issue today. I was using localhost in the connectionstring. Got rid of the issue by replacing localhost woth 'server name',. My db and application are running in the same machine.
If you don't have server name
go to Sql server management studio and execute below query, which will give you the server name.
SELECT ##SERVERNAME
The connection string look as below
conn = pyodbc.connect('Driver={SQL Server};'
'Server=myServerName;'
'Database=mydb;'
'Trusted_Connection=yes;')
Related
I am trying to use Python to connect to a SQL database by using Window authentication. I looked at some of the posts here (e.g., here), but the suggested methods didn't seem to work.
For example, I used the following code:
cnxn = pyodbc.connect(driver='{SQL Server Native Client 11.0}',
server='SERVERNAME',
database='DATABASENAME',
trusted_connection='yes')
But I got the following error:
Error: ('28000', "[28000] [Microsoft][SQL Server Native Client 11.0][SQL Server]
Login failed for user 'DOMAIN\\username'. (18456) (SQLDriverConnect); [28000] [Microsoft]
[SQL Server Native Client 11.0][SQL Server]Login failed for user 'DOMAIN\\username'.
(18456)")
(Note that I replaced the actual domain name and user name with DOMAIN and username respectively, in the error message above.)
I also tried using my UID and PWD, which led to the same error.
Lastly, I tried to change the service account by following the suggestion from the link above, but on my computer, there was no Log On tab when I went to the Properties of services.msc.
I wonder what I did wrong and how I can fix the problem.
Connecting from a Windows machine:
With Microsoft's ODBC drivers for SQL Server, Trusted_connection=yes tells the driver to use "Windows Authentication" and your script will attempt to log in to the SQL Server using the Windows credentials of the user running the script. UID and PWD cannot be used to supply alternative Windows credentials in the connection string, so if you need to connect as some other Windows user you will need to use Windows' RUNAS command to run the Python script as that other user..
If you want to use "SQL Server Authentication" with a specific SQL Server login specified by UID and PWD then use Trusted_connection=no.
Connecting from a non-Windows machine:
If you need to connect from a non-Windows machine and the SQL Server is configured to only use "Windows authentication" then Microsoft's ODBC drivers for SQL Server will require you to use Kerberos. Alternatively, you can use FreeTDS ODBC, specifying UID, PWD, and DOMAIN in the connection string, provided that the SQL Server instance is configured to support the older NTLM authentication protocol.
I tried everything and this is what eventually worked for me:
import pyodbc
driver= '{SQL Server Native Client 11.0}'
cnxn = pyodbc.connect(
Trusted_Connection='Yes',
Driver='{ODBC Driver 11 for SQL Server}',
Server='MyServer,1433',
Database='MyDB'
)
Try this cxn string:
cnxn = pyodbc.connect('DRIVER={SQL Server};SERVER=localhost;PORT=1433;DATABASE=testdb;UID=me;PWD=pass')
http://mkleehammer.github.io/pyodbc/
I had similar issue while connecting to the default database (MSSQLSERVER). If you are connecting to the default database, please remove the
database='DATABASENAME',
line from the connection parameters section and retry.
Cheers,
Deepak
The first option works if your credentials have been stored using the command prompt. The other option is giving the credentials (UId, Psw) in the connection.
The following worked for me:
conn = pyodbc.connect('DRIVER={SQL Server};SERVER=yourServer;DATABASE=yourDatabase;UID=yourUsername;PWD=yourPassword')
import pyodbc #For python3 MSSQL
cnxn = pyodbc.connect("Driver={SQL Server};" #For Connection
"Server=192.168.0.***;"
"PORT=1433;"
"Database=***********;"
"UID=****;"
"PWD=********;")
cursor = cnxn.cursor() #Cursor Establishment
cursor.execute('select site_id from tableName') #Execute Query
rs = cursor.fetchall()
print(rs)
A slightly different use case than the OP, but for those interested it is possible to connect to a MS SQL Server database using Windows Authentication for a different user account than the one logged in.
This can be achieved using the python jaydebeapi module with the JDBC JTDS driver. See my answer here for details.
Note that you may need to change the authentication mechanism. For example, my database is using ADP. So my connection looks like this
pyodbc.connect(
Trusted_Connection='No',
Authentication='ActiveDirectoryPassword',
UID=username,
PWD=password,
Driver=driver,
Server=server,
Database=database)
Read more here
Trusted_connection=no did not helped me. When i removed entire line and added UID, PWD parameter it worked. My takeaway from this is remove
I'm having a problem establishing a connection to the MySQL database No matter what I try or change I seem to be getting the same error. I want to be able to use python to modify MySQL database using ODBC but being new to this I'm not sure how to go about it. This is the error message:
Traceback (most recent call last):
File "C:\Users\Lutho\PycharmProjects\pyODBC\main.py", line 17, in
conx = pyodbc.connect(f'''DRIVER={driver};
pyodbc.OperationalError: ('08001', '[08001] [Microsoft][ODBC Driver 17 for SQL Server]Named Pipes Provider: Could not open a connection to SQL Server [53]. (53) (SQLDriverConnect); [08001] [Microsoft][ODBC Driver 17 for SQL Server]Login timeout expired (0); [08001] [Microsoft][ODBC Driver 17 for SQL Server]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. (53)')
Code I used:
import pyodbc
# define the server and database name
driver = '{ODBC Driver 17 for SQL Server}'
server = 'Local instance MySQL80'
database = 'tarsdb'
username = 'root'
password = '1234'
# define connection string
conx = pyodbc.connect(f'''DRIVER={driver};
SERVER={server};
DATABASE={database};
Uid={username};
Pwd={password};''')
# create connection cursor
cursor = conx.cursor()
I also tried using Trusted_Connection=yes and moved my MySQL file into the same folder as my python file but nothing has worked. Is there something I'm missing that I don't know about? If you can solve my problem that would be much appreciated. (If the question looks messy, just know I had a problem formating it.)
The issue was trying to use the ODBC driver for Microsoft SQL Server when the target database was MySQL. ODBC drivers are not interchangeable between different database products.
Connecting to MySQL from Python is possible using pyodbc and "MySQL Connector/ODBC" but there are better alternatives, specifically mysqlclient or pymysql. Both are solid choices, although in many circumstances mysqlclient is significantly faster than pymysql.
I've looked through some other things but haven't been able to find a working solution.
Here is my code:
conn = db.connect("Driver={SQL Server}; Server='Server';Database='Database_DW'; uid='uid'; pwd = 'pwd'")
I run this code and I get the following error:
DatabaseError: ('08001', '[08001] [Microsoft][ODBC SQL Server
Driver][DBNETLIB]SQL Server does not exist or access denied.')
I'm really at a loss here. I can log in fine through the SQL Server Client with the exact some credentials.
Consider adjusting connection strings as parameter values are not quoted. Right now, pypyodbc is attempted to find the 'Server' (quotes included) server.
conn = pypyodbc.connect("DRIVER={SQL Server};server=servername;database=databasename;" + \
"UID=username;PWD=***")
Alternatively, use keyword arguments:
conn = pypyodbc.connect(driver="{SQL Server}", host="servername", database="database",
uid="username", pwd="***")
I would like to connect to an Oracle database with python through pyodbc. I have installed oracle driver and I tried the following script:
import pyodbc
connectString = """
DRIVER={Oracle in OraClient12Home1};
SERVER=some_oracle_db.com:1521;
SID=oracle_test;
UID=user_name;
PWD=user_pass
"""
cnxn = pyodbc.connect(connectString)
I got the following error message:
cnxn = pyodbc.connect(connectString)
Error: ('HY000', '[HY000] [Oracle][ODBC][Ora]ORA-12560: TNS:protocol adapter error\n (12560) (SQLDriverConnect)')
What's wrong here?
Why keyword DBQ works and SID/Service Name does not, see the section 21.4.1 Format of the Connection String in Oracle 12c documentation.
https://docs.oracle.com/database/121/ADFNS/adfns_odbc.htm#ADFNS1183/
or google keywords for odbc oracle 12c
Looks Like your missing a PORT
Try this way
NOTE:
Depending on your Server the syntax can be different this will work for Windows without DSN using an SQL Server Driver.
connectString = pyodbc.connect('DRIVER={SQL Server};SERVER=localhost;PORT=1433;DATABASE=testdb;UID=me;PWD=pass')
This is the connection, you still need a cursor and to use execute along with an SQL Statement..
You have to specify server or hostname (or IP address in connection string for your database server is running.
So close...
connectString = """
DRIVER={Oracle in OraClient12Home1};
SERVER=some_oracle_db.com:1521;
DBQ=oracle_test;
Uid=user_name;
Pwd=user_name
"""
I replaced SID with DBQ
Below is the traceback. I've read all the other SO threads, googled for over two hours, and cannot figure this out. Here is what I have tried:
Both SQL Authentication and Windows Authentication versions of the connection string.
Using the SQL Server name (text) and also the IP Address of the server
Including and Excluding port 1443 (the default tcp/ip port for the SQL server)
Creating new rules in Windows Firewall to allow both inbound/outbound TCP at port 1443
List item
Traceback (most recent call last):
File "pythonscript.py", line 75, in
conn = pyodbc.connect(driver='{SQL Server}', server='ipaddress,1443', database='master', uid='XYZ\login', pwd='password')
pyodbc.Error: ('08001', '[08001] [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17) (SQLDriverConnect); [01000] [Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionOpen (Connect()). (53)'
here are some examples of what I've tried for the connection string:
conn = pyodbc.connect('Trusted_Connection=yes', driver = '{SQL Server}',server = '1.1.1.1,1443', database = 'master')
then
conn = pyodbc.connect(driver='{SQL Server}', server='1.1.1.1,1443', database='master', uid='xyz\login', pwd='pwd'
then I also tried both of the above with the name of the server (text) rather than the IP address. I have no idea how to get this to work at this point.
Have you confirmed you have connectivity between the servers? Try telnet -
telnet serverName 1433
If that connects then you can focus on issues with Python or the connection string.
In your connection string change it to use the PORT parameter instead of the ,1433. Something like -
SERVER=1.1.1.1;PORT=1433;
I would also say you might be better off passing the whole string. Here is what I do on Linux using FreeTDS typically -
self.db_connection = pyodbc.connect("DRIVER=FreeTDS;SERVER=1.1.1.1;PORT=1433;DATABASE=myDB;UID=myUser;PWD=myPass;TDS_Version=8.0;")
CONNECTION FROM WINDOWS TO MS SQL SERVER DATABASE:
Here you have an example I use myself to connect to MS SQL database table with a Python script:
import pyodbc
server = 'ip_database_server'
database = 'database_name'
username = 'user_name'
password = 'user_password'
driver = '{SQL Server}' # Driver you need to connect to the database
port = '1433'
cnn = pyodbc.connect('DRIVER='+driver+';PORT=port;SERVER='+server+';PORT=1443;DATABASE='+database+';UID='+username+
';PWD='+password)
cursor = cnn.cursor()
If you are trying to connect from a Windows device to the DB, go to ODBC Data Source Administrator from Windows, and check if you have installed the driver:
Where is the ODBC data source administrator in a Windows machine.
The image is in spanish, but you only have to click on 'Drivers' tab, and check if the driver is there as in the image.
CONNECTION FROM LINUX/UNIX TO MS SQL SERVER DATABASE:
If you are working in Linux/Unix, then you shoud install a ODBC manager like 'FreeTDS' and 'unixODBC'. To configure them, you have some examples in the following links:
Example: Connecting to Microsoft SQL Server from Linux/Unix
Example: Installing and Configuring ODBC