cx_Oracle doesn't connect when using SID instead of service name on connection string

Question

I have a connection string that looks like this

con_str = \"myuser/mypass@oracle.sub.example.com:1521/ora1\"

Where ora1 is the

Answer 1

I also met this issue. The solution is:

1: get the service name at tnsnames.ora
2: put the service name in
con_str = "myuser/mypass@oracle.sub.example.com:1521/ora1"