python 连接Oracle 的步骤

1、 安装 cx_Oracle

pip install cx_Oracle

2、配置  oci.dll 与 oraociei11.dll 添加到环境变量path中

 下载地址：百度搜索下载，Oracle  PLSQL 进行下载

3、连接步骤

# coding:utf-8

import pandas as pd

import sys
import codecs
#sys.stdout = codecs.getwriter("gbk")(sys.stdout.detach())

from sqlalchemy import create_engine

import cx_Oracle

#db=cx_Oracle.connect('admin','admin','172.16.1.452:1521/orcl',encoding = "UTF-8", nencoding = "UTF-8")
db=cx_Oracle.connect('你的账号','密码','IP:端口/服务名',encoding = "UTF-8", nencoding = "UTF-8")
print (db.version)

cr=db.cursor()

SQL2 = '''SELECT * FROM OA_W_BAOXIAOMXYWB'''

cr.execute(SQL1)

rs=cr.fetchall()

zz=pd.DataFrame(rs)

print (zz)

db.close()