cx_Oracle.DatabaseError: ORA-12170: TNS:Connect timeout occurred
问题 I am getting cx_Oracle.DatabaseError: ORA-12170: TNS:Connect timeout occurred error while connecting oracle from python. I have installed python 3.7.0 and instantclient_11_2. Below are the process i am doing, import cx_Oracle dsn_tns = cx_Oracle.makedsn( '<ip>', 1521, service_name = '<given service name>') connection = cx_Oracle.connect('user', 'pwd', dsn_tns) I have set system veriable PATH where oci.dll is present. What could be wrong? 回答1: Try: connection = cx_Oracle.connect('user', 'pwd',