Linux中 python2 安裝cx_Oracle連接Oracle

環境描述： 操作系統：ubuntu 12.04 Python 環境： python2.7 

1 安裝python-pip python-dev

# Ubuntu
# apt-get install python-pip python-dev

# Centos
# yum -y install epel-release
# yum -y install python-pip python python-devel

2 cx_Oracle安裝步驟

1. 確定ORACLE數據庫版本，如11.2.0.4

2. 到ORACLE https://www.oracle.com/technetwork/topics/linuxx86-64soft-092277.html 官方網上下載對應的軟件包

instantclient-basic-linux.x64-11.2.0.4.0.zip
instantclient-sdk-linux.x64-11.2.0.4.0.zip

3. 將包上傳到服務器上

4. 解壓到當前目錄下，拷貝到/usr/local下

# unzip instantclient-basic-linux.x64-11.2.0.4.0.zip 
# unzip instantclient-sdk-linux.x64-11.2.0.4.0.zip 
# mv instantclient_11_2 /usr/local/

5. 執行以下命令

# echo "/usr/local/instantclient_11_2" > /etc/ld.so.conf.d/oracle-instantclient.conf
# ldconfig

6. 安裝依賴包

# Ubuntu
# apt-get install libaio-dev

# Centos
# yum install install libaio-devel

7. 使用pip安裝cx_Oracle

# pip install cx_Oracle

【注】部分機器出現以下報錯

Downloading/unpacking cx_Oracle
  Cannot fetch index base URL http://pypi.python.org/simple/
  Could not find any downloads that satisfy the requirement cx_Oracle
No distributions at all found for cx_Oracle
Storing complete log in /root/.pip/pip.log

解決辦法

#  pip install --index-url=https://pypi.python.org/simple/ cx_Oracle

 8. 在python腳本中測試連接Oracle實例，代碼如下：

import cx_Oracle

try:
        conn = cx_Oracle.connect(
            'username/password@xxxxx:1521/instance_name')
    except Exception as e:
        print("connect oracle error!!")
        logger.error(e)
else:
    cur = conn.cursor()
    ......