I have a python script that uses sqalchamy like this:
engine = create_engine("mysql+pymysql://" + username + ":" + password + "#" + host + "/" + database)
diffDF.to_sql('StockData', con = engine, if_exists = 'append',index = False, chunksize = 1000)
It works fine when I run the .py file but when I build an exe using pyinstaller I get this error:
sqlalchemy.exc.OperationalError: (pymysql.err.OperationalError) (2003, "Can't connect to MySQL server on 'username#ipaddress' ([Errno 11003] getaddrinfo failed)")
Hidden imports:
hiddenimports=['sqlalchemy','pymysql','mysql.connector'],
Versions:
SQLAlchemy 1.4.40
PyMySQL 1.0.2
Any idea what I am missing?
Thanks
I try to connect to SQL using the pyodbc package, but get the error:
SystemError:
built-in function connect returned NULL without setting an error
What could be the reason for this?
When I run the code from another computer - I do manage to connect to SQL.
The connection string I use:
conn_str = 'DRIVER={SQL Server};SERVER=' + server + ';DATABASE=' + database + ';'
conn = pyodbc.connect(conn_str)
I have ODBC and pyodbc installed on my computer.
Of course I set values for the database and server fields
Before I do connect I use a function that does logon with the username and password
Because of your question do not have a reproductible exemple i can't be 100% of what I will say;
This is probably a driver problem, if you have acces to db2dsdriver.cfg file or db2cli.ini you shoyld try to look in those files to find what is the exact name of the driver.
Following this could help you to have more information on the problem.
I am connecting to an Azure SQL database using pyodcb. We have multi-factor authentication enabled, so I am using ActiveDirectoryInteractive authentication. We also use single sign-on for Windows.
My code is as follows:
import pyodbc
driver = '{ODBC Driver 17 for SQL Server}'
server = 'xxxxxxxxxxxxx.database.windows.net'
database = 'xxxxxxxxxxxxx'
authentication = 'ActiveDirectoryInteractive'
username = 'xxxxxxxxxxxxx'
conn = pyodbc.connect(
'DRIVER=' + driver + ';' +
'SERVER=' + server + ';' +
'DATABASE=' + database + ';' +
'UID=' + username + ';' +
'AUTHENTICATION=' + authentication + ';')
cursor = conn.cursor()
When I run the script I get pop-ups to submit my password and MFA details. But the connection works whether I fill in these details or just close the prompts - suggesting that single sign-on is working successfully. So why am I getting the password and MFA pop-ups - and how can I suppress them?
I'm not sure if this will disable it in Office 365, but if you want to disable MFA for users in Azure ad, I think the easiest way is to disable it directly in the portal.
I have mongodb running on azure portal. I can connect to it using nosql booster. I have created a DB TestDb and have added 3 collections to it. I am trying to connect to it using python as below:
mongo_url = 'mongodb://' + <username> + ':' + <password> + '#' + <url> + ':' + port + '/' + admin
client = MongoClient(mongo_url)
db = client.get_database('TestDb')
print(db)
print(db.list_collection_names()) # Error at this line
Below is the output of db:
Database(MongoClient(host=['<name>.documents.azure.com:10255'], document_class=dict, tz_aware=False, connect=True), 'TestDb')
but at db.list_collection_names() it shows error <name>.documents.azure.com:10255: timed out.
I have rechecked everything and all looks good to me. But not sure why not able to do above using python. Please help. Thanks
It's worth mentioning you are using Cosmos DB.
Although it's compatible with MongoDB on wire protocol level, it has own specifics.
Try to follow Quick Start snippets for Python from Azure Portal. It should have most accurate connection settings.
My best guess is it requires ssl enabled oclientside:
mongo_url = 'mongodb://' + <username> + ':' + <password> + '#' + <url> + ':' + port + '/' + admin + '?ssl=true'
I was also using a test DB but nothing worked. This develop DB had some dummy configurations so the solution was adding a tlsAllowInvalidCertificates to my url:
url = f"mongodb://{USERNAME}:{PASSWORD}#{HOST}:{PORT}/{DB_NAME}?authSource=admin&ssl=true&tlsAllowInvalidCertificates=true"
I'm working on an app that needs to connect to an ibm db2 database. Using DBeaver I can successfully connect to the database (I provide him the db2cc.jar and db2cc4.jar files).
It looks to me as DBeaver is using my Window's credentials to login, because I didn't need to input any login or password to connect.
Now, I've been trying to connect to the same database using python 3.7 and pypi's latest version of the ibm_db package. I didn't install anything else.
import ibm_db
# ...
connection_string = "DATABASE=" + self.params['schema'] + ";" + \
"HOSTNAME=" + self.params['host'] + ";" + \
"PORT=" + self.params['port'] + ";" + \
"PROTOCOL=TCPIP;" + \
"SECURITYMECHANISM=4;" + \
"UID=" + self.params['user'] + ";" + \
"PWD=" + self.params['password'] + ";"
try:
self.connection = ibm_db.connect(connection_string, "", "")
# ...
Using my Windows credentials in the parameters, I get the following error message:
Connection error
Bad credentials
SQLCODE=-30082
08001
From what I've seen on stack overflow connecting to a db2 database is complicated...
Does someone know how to connect ? Using the windows credentials or otherwise...
Thanks !
Db2 works fine with Python.
You need to be aware of some basics before you start such as:
what operating-system runs the target Db2-database and
what kind of client is being used (java, odbc/cli, .net etc), and
what kind of authentication/encrpytion is in place for the database
(ssl, server based authentication/+/-/encryption etc.).
is the remote database rdbms Apache DERBY or Db2.
Find out these basics before you start. You have to speak with people who run the Db2-server.
Note: in your question you mention (SecurityMechanism=4) com.ibm.db2.jcc.DB2BaseDataSource.USER_ONLY_SECURITY - this is not relevant for non-JAVA clients, it is relevant is the database manager is DERBY .
For python, the ibm_db package is not a java application.
DBeaver is a java application (hence it uses db2jcc.jar or db2jcc4.jar and a licence-file to connect to the remote database).
You can only use your Windows credentials for connecting to a Db2-database when that Db2-database run on Microsoft-Windows, and the credentials work on the hostname running the Db2-server. For any other combinations, the administrator must issue you a userid/password that is relevant for the target hostname.
The ibm_db package needs a Db2-client to be installed. The Db2-client is a separate installable. There are different kinds of Db2-client depending both on which operating-system runs your Db2-server and how much functionality you need to have in your Db2-client. If your remote Db2-server runs on Linux, Unix, Windows or Z/OS then you can use the "IBM Data Server Runtime Client" which you can either download from IBM's passport advantage website, or get from your internal IT folks. If your Db2-server runs on i-Series (AS/400) you should get its drivers from your i-Series administrator. For either Z/OS or i-Series you will additionally need a license file (which costs money) and you should get that from your administrator, unless your company uses a gateway product called Db2-connect in which case you don't need a separate license file on your workstation.
Try the following connection string, If your db2 client and server are on the same host.
Change the 'mydb' and 'DB2' (db2 instance name, you can get it with db2ilist utility) constants according your case.
ibm_db.connect('DATABASE=mydb;Instance=DB2;PROTOCOL=IPC;', '', '')
add ibm_db library and import ibm_db on top in the .py file.
def get_db_connection():
"""
This will help to get db2 connection for query execution
:return: conn
"""
dsn_driver = "{IBM DB2 ODBC DRIVER}"
dsn_database = "BLUDB"
dsn_hostname = "your_hostname"
dsn_port = "50000"
dsn_protocol = "TCPIP"
dsn_uid = "your_userid"
dsn_pwd = "your_pwd"
dsn = (
"DRIVER={0};"
"DATABASE={1};"
"HOSTNAME={2};"
"PORT={3};"
"PROTOCOL={4};"
"UID={5};"
"PWD={6};").format(dsn_driver, dsn_database, dsn_hostname, dsn_port, dsn_protocol, dsn_uid, dsn_pwd)
try:
conn = ibm_db.connect(dsn, "", "")
print("Connected!")
return conn
except Exception:
print("\nERROR: Unable to connect to the \'" + dsn_database + "\' server.")
print("error: ", ibm_db.conn_errormsg())
exit(-1)
function get_db_connection() will return the connection object. On that connection object you can perform operation like:
conn = get_db_connection()
list_results = []
select_query = 'SELECT a.STATUS, a.ID FROM "TABLE_NAME" AS a'
print(select_query)
selectStmt = ibm_db.exec_immediate(conn, select_query)
while ibm_db.fetch_row(selectStmt) != False:
list_results.append(ibm_db.result(selectStmt, 'ID'))
ibm_db.close(conn)