I am trying to connect to my GearHost Database in python, I followed the instructions here on GearHost. My python code looks like:
from mysql.connector import connection
server = 'den1.mssql6.gear.host'
db = 'testmenow'
user = 'testmenow'
psword = 'TEST!!'
cnxn = connection.MySQLConnection(host=server, user=usr, password=psword, database=db)
cursor = cnxn.cursor()
cnxn.close()
I get the following error:
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'den1.mssql6.gear.host:3306' (10061 No connection could be made because the target machine actively refused it)
I have also tried to connect to GearHost through mysql workbench, as instructed in GearHost's instruction page, which also cannot connect to the database:
Connecting to MySQL server ...
Can't connect to MySQL server on 'den1.mssql6.gear.host' (10060)
This is what my GearHost shows:
Tried (unsuccessfully)
Messing with and without a port number, as mentioned here: Issue connecting to gearhost database
Trying connecting through MySQL workbench
Considering the conversation here: Cannot Connect to Database Server mysql workbench , but does not seem applicable to my circumstances.
Different SQL packages in python, including mysql-python and mysql-connector-python
Question
Am I missing something obvious that is preventing me from connecting to GearHost, either with python or mysql workbench?
UPDATE
as #SMor pointed out, I had mistaken MSSQL for MySQL - I was able to successfully connect to my database using:
import pyodbc
server = 'den1.mssql6.gear.host'
db = 'testmenow'
usr = 'testmenow'
psword = 'TEST!!'
cnxn = pyodbc.connect('DRIVER={ODBC Driver 13 for SQL Server};SERVER='+server+';'
'DATABASE='+db+';UID='+usr+';PWD=' + psword)
cursor = cnxn.cursor()
Related
I'm currently running into the issue of being unable to connect to the a microsoft sql server database through python that I can connect to via Tableau. I'm attempting to track some historical data that we cannot keep within our database for future years. This uses windows authentication and I've confirmed it working from my local machine to the server in Tableau. However, I'm not sure what driver Tableau uses in order to make this connection. I have tried to connect via ODBC in Tableau and run into the same issue as I do in python.
import pyodbc
cnxn_write = pyodbc.connect(driver='{SQL Server}',
server='FQDN, Port Number\SQLEXPRESS',
database='DataAnalytics',
trusted_connection='yes'
)
Returns the following error code
---------------------------------------------------------------------------
OperationalError Traceback (most recent call last)
C:\Users\User\AppData\Local\Temp/ipykernel_6969/555555555.py in <module>
3 import pyodbc
4 import date
time
----> 5 cnxn_write = pyodbc.connect(driver='{SQL Server}',
6 server='server-name\SQLEXPRESS',
7 database='DataAnalytics',
OperationalError: ('HYT00', '[HYT00] [Microsoft][ODBC SQL Server Driver]Login timeout expired (0) (SQLDriverConnect)')
The following code returns the same error.,
import pyodbc
cnxn_write = pyodbc.connect(driver='{SQL Server}',
server='FQDN, Port Number',
database='DataAnalytics',
trusted_connection='yes'
)
Anyone have any thoughts on what driver I should be using to attempt to connect with this database? I've tried {SQL Server} and {ODBC Driver 17 for SQL Server}. Or is this more likely to be on the server side than on my end?
Thanks everyone!
So in case anyone else runs into this issue in the future. pyodbc was not properly connecting to the driver ODBC Driver 17 for SQL Server. My fix was creating a User DSN after running the Windows executable odbcad32.exe. That properly identified the server, credentials and mirror server for the database. I called this User DSN 'sqlexpress' and the following is my connect string now.
cnxn_write = pyodbc.connect(r'DSN=sqlexpress')
Sadly this feels more like a workaround than a solution, but it now properly connects to my database.
I had the same problem but this worked for me. I use mssql
import pymssql
conn = pymssql.connect(server='host:port', user='user', password='pass', database ='database')
#%%
cursor = conn.cursor()
cursor.execute('SELECT TOP 10 * from table;')
row = cursor.fetchone()
while row:
print(str(row[0]) + " " + str(row[1]) + " " + str(row[2]))
row = cursor.fetchone()
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
I wanted to know the process of connecting to a MySQL database that is hosted on a web server.
I have a basic free webserver for testing on 000webhost on which I created a MySQL database.
I have the credentials for the database which I will pretend are
host - mysql.webhost000.com
user - dummy_user
password - dummy_password
database - dummy_database
and I have a python script executing from my local computer with internet access
import MySQLdb
db = MySQLdb.connect(host="mysql.webhost000.com",
port=3306,
user="dummy_user",
passwd="dummy_password",
db="dummy_database")
I was hoping it would connect as long as I have the right credentials but when I execute the script it just hangs and once I quit it I see the error
Can't connect to MySQL server on 'mysql.webhost000.com' (4)
Am I missing some steps?
There are two possible problems and im not able to recreate the first one. One is the
host="mysql.webhost000.com"
is incorrect and throwing an error. The connection could be listed as another way. The other I noticed is this is usually how I set up my connection script.
import MySQLdb
def connect():
db = MySQLdb.connect(host="mysql.webhost000.com",
port=3306,
user="dummy_user",
passwd="dummy_password",
db="dummy_database")
c = conn.cursor()
return c, db
I have tried the following code:
MySQLdb.connect(host='xxx', port=3306, user='yyy')
But I get the following error:
(2005, "Unknown MySQL server host ...
I have tried to remove all firewall restrictions on the external MySQL instance, as a test. I am able to connect to the instance from my developing machine.
I believe this should be possible now that the App Engine supports sockets, or am I wrong?
I think this connection is not allowed (no external socket support in MySQLdb) :
https://developers.google.com/appengine/docs/python/cloud-sql/?hl=en#Python_Using_a_local_MySQL_instance_during_development
You have to use localhost/127.0.0.1 or CloudSQL socket (unix_socket='/cloudsql/'):
if (os.getenv('SERVER_SOFTWARE') and
os.getenv('SERVER_SOFTWARE').startswith('Google App Engine/')):
db = MySQLdb.connect(unix_socket='/cloudsql/' + _INSTANCE_NAME, db='guestbook', user='root')
else:
db = MySQLdb.connect(host='127.0.0.1', port=3306, user='root')
# Alternately, connect to a Google Cloud SQL instance using:
# db = MySQLdb.connect(host='ip-address-of-google-cloud-sql-instance', port=3306, user='root')
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;')