Python: unable connect with database

Python 3.4 with psycopg2

I used this guide to set up a basic psycopg2 connection like so:

#!/usr/bin/python
import psycopg2
import sys
import pprint

def main():
    conn_string = "dbname='CIBTST' host='XX.XX.XXX.XX' port='XXXX' user='XXXXX' password='XXXX'"
    conn = psycopg2.connect(conn_string)
    cursor = conn.cursor()
    cursor.execute("My_select")
    records = cursor.fetchall()
    pprint.pprint(records)
if __name__ == "__main__":
    main()

I get this traceback:

Traceback (most recent call last):
File "C:\Users\pi24926\Desktop\Python\doSMS.py", line 14, in <module>
main()
File "C:\Users\pi24926\Desktop\Python\doSMS.py", line 8, in main
conn = psycopg2.connect(conn_string)
File "C:\Python34\lib\site-packages\psycopg2\__init__.py", line 164, in connect
conn = _connect(dsn, connection_factory=connection_factory, async=async)
psycopg2.OperationalError

When I try the same select statement in another client (Toad) it seems to operate correctly. Any suggestions will be great. Thank you!

EDIT: The source of problem is: PORT. If I run:

#!/usr/bin/python
import psycopg2
import sys
import pprint

def main():
    conn_string = "dbname='CIBTST' host='XX.XX.XXX.XX' user='XXXXX' password='XXXX'"
    conn = psycopg2.connect(conn_string)
    cursor = conn.cursor()
    cursor.execute("My_select")
    records = cursor.fetchall()
    pprint.pprint(records)
if __name__ == "__main__":
    main()

Then I get:

Traceback (most recent call last):
File "C:\Users\pi24926\Desktop\Python\doSMS.py", line 14, in <module>
main()
File "C:\Users\pi24926\Desktop\Python\doSMS.py", line 8, in main
conn = psycopg2.connect(conn_string)
File "C:\Python34\lib\site-packages\psycopg2\__init__.py", line 164, in connect
conn = _connect(dsn, connection_factory=connection_factory, async=async)
psycopg2.OperationalError: could not connect to server: Connection timed out  (0x0000274C/10060)
Is the server running on host "XXXXXXX" and accepting
TCP/IP connections on port 5432?

I can only connect under port 1522 for some reason. Any ideas?

The problem was with database...

It is an Oracle, so i should use cx_Oracle instead of psycopg2.