使用 SQLAlchemy 连接到 IBM DB2 数据库

Question

I am trying to connect to a cloud based IBM DB2 database using SQLAlchemy. Using the base ibm_db python library this works:

connection_string = 'DRIVER={DB2};DATABASE=BLUDB;HOSTNAME=host.databases.appdomain.cloud;PORT=port;PROTOCOL=TCPIP;UID=user;PWD=pass;SECURITY=SSL;'
conn = ibm_db.connect(connection_string, '', '')

However, trying to do the same using SQLAlchemy, the connect part just hangs/timeouts

from sqlalchemy import create_engine
import ibm_db_sa

user = "user"
password = "pass"
host = "host.databases.appdomain.cloud"
port = "port"
database = "BLUDB"

db2_connection_string = (
    f'db2+ibm_db://{user}:{password}@{host}:{port}/{database}'
    ':SECURITY=SSL'
)

engine = create_engine(db2_connection_string)
connection = engine.connect() # timeouts here

Any suggestions?

Answer 1

Only use a connection string like this:

db2_connection_string = (
    f'db2://{user}:{password}@{host}:{port}/{database}'
    ':SECURITY=SSL;PROTOCOL=TCPIP;'
)

In this line of code in ghstats.ps is a working sample. The code is from this IBM Cloud solution tutorial which has a Python app with SQLAlchemy connecting to Db2 on Cloud.

As alternative, you can also try ibm_db_sa as driver prefix instead of db2 . Make sure to import the right modules (ibm_db, ibm_db_sa).