[大数据]Python---连接Oracle数据库

Python—连接Oracle数据库

使用python连接Oracle数据并读取数据库表

安装文件

1、cx_Oracle

pip install cx_Oracle

2、Oracle客户端
下载Oracle客户端，下载页面。

文件下载后，解压

数据库读取

import os
import traceback
import cx_Oracle as Ora

os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'  #  防止乱码问题
os.environ['Path'] = r'E:\instantclient_21_3'  #oracle客户端安装位置


def read_oracle(query):
    user_name = "user"
    passwd = "password"
    ip_port = "192.168.195.133:3468"
    db = "dbname"
    result = []
    conn = Ora.connect(user_name, passwd, '{}/{}'.format(ip_port, db), encoding='UTF-8')
    try:
        cur = conn.cursor()
        re_fetch = cur.execute(query)
        result = re_fetch.fetchall()
        conn.close()
    except Exception as err:
        print("Error:\t{}".format(err))
        print(traceback.format_exc())
        conn.close()

    return result


if __name__ == '__main__':
    query_sql = "select * from table"
    res = read_oracle(query_sql)
    print(res)

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