Python - Sqlalchemy - Oracle Connection Fails To Connect To Sid

I am trying to use sqlalchemy to connect to an oracle DB. I was expecting the following to work given that it appears the exact syntax is shown in the sqlalchemy documentation. or

Solution 1:

Based on the documentation at Sqlalchemy Documentation, you should probably use the cx_oracle engine. The connect string is:

oracle+cx_oracle://user:pass@host:port/dbname[?key=value&key=value...]

with an option of service_name or sid as follows:

oracle+cx_oracle://user:pass@host:1521/?service_name=hr
oracle+cx_oracle://user:pass@host:1521/?sid=hr

Solution 2:

Try using this connection string:

engine = create_engine("oracle+cx_oracle://<username>:<password>@(DESCRIPTION = (LOAD_BALANCE=on) (FAILOVER=ON) (ADDRESS = (PROTOCOL = TCP)(HOST = <host>)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = devdb)))") 

It worked for me.