1) 首先通过命令安装cx_Oracle

• pip install cx_Oracle
• 也可在pycharm里面安装，File->Default Setting ->Project Interpreter->添加cx_Oracle->Install package;
• 如果安装失败，点击Manage Repositories :更换仓库地址为：http://pypi.douban.com/simple/
• 去官网下载源码包：cx_Oracle-5.2.1.tar.gz;
• https://pypi.python.org/pypi/cx_Oracle/5.2.1#downloads

2）去oracle官网下载mac版的64bit的client basic 和client sdk

http://www.oracle.com/technetwork/topics/intel-macsoft-096467.html

3)编译安装：

• sudo su #切换到root用户
• mkdir /Users/guanguan/oracle #创建oracle文件
• mv /Users/guanguan/Downloads/instantclient-* /Users/guanguan/oracle #将下载的两个Oracle包放到/Users/guanguan/oracle目录下
• cd /Users/guanguan/oracle 进入oracle文件中
• unzip instantclient-basic-macos.64-12.1.0.4.0.zip #解压
• unzip instantclient-sdk-macos.64-12.1.0.4.0.zip #解压
• cd instantclient_12_1/sdk
• unzip ottclasses.zip
• cd ..
• cp -R ./sdk/* .
• cp -R ./sdk/include .
• ln -s  libocci.dylib.12.1 libocci.dylib
• ln -s libclntsh.dylib.12.1 libclntsh.dylib

4）更改环境变量：

• vi ~/.bash_profile
• export ORACLE_HOME=/Users/guanguan/oracle/instantclient_12_1
• export DYLD_LIBRARY_PATH=$ORACLE_HOME
• export LD_LIBRARY_PATH=$ORACLE_HOME
• 然后输入source ~/.bash_profile 或者 .  ~/.bash_profile使环境变量生效

5）测试环境变量是否生效

• echo $ORACLE_HOME
• /Users/guanguan/oracle/instantclient_12_1

6）然后解压安装cx_Oracle：

• tar -zxvf cx_Oracle-5.2.1.tar.gz
• cd cx_Oracle-5.2.1
• python setup.py build
• python setup.py install

7）测试cx_Oracle安装是否成功

• python
• import cx_Oracle

#运行结果结果：

➜  ~ python
Python 2.7.10 (default, Oct 23 2015, 19:19:21)
[GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cx_Oracle
>>>

或者 python -c "import cx_Oracle"

➜  ~ python -c "import cx_Oracle"
➜  ~

此时说明已经安装成功啦~

报错信息：

sh-3.2# python -c "import cx_Oracle"
/Library/Python/2.7/site-packages/cx_Oracle-5.2.1-py2.7-macosx-10.11-intel.egg/cx_Oracle.py:3: UserWarning: Module cx_Oracle was already imported from /Library/Python/2.7/site-packages/cx_Oracle-5.2.1-py2.7-macosx-10.11-intel.egg/cx_Oracle.pyc, but /Users/guanguan/oracle/cx_Oracle-5.2.1 is being added to sys.path
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "build/bdist.macosx-10.11-intel/egg/cx_Oracle.py", line 7, in <module>
  File "build/bdist.macosx-10.11-intel/egg/cx_Oracle.py", line 6, in __bootstrap__
ImportError: dlopen(/var/root/.python-eggs/cx_Oracle-5.2.1-py2.7-macosx-10.11-intel.egg-tmp/cx_Oracle.so, 2): Library not loaded: @rpath/libclntsh.dylib.12.1
  Referenced from: /var/root/.python-eggs/cx_Oracle-5.2.1-py2.7-macosx-10.11-intel.egg-tmp/cx_Oracle.so
  Reason: image not found

解决方法：(删除之前安装的cx_Oracle，设置export FORCE_RPATH=TRUE，重新安装cx_Oracle)

sh-3.2# export FORCE_RPATH=TRUE
sh-3.2# pip install cx_Oracle
Requirement already satisfied: cx_Oracle in /Library/Python/2.7/site-packages/cx_Oracle-5.2.1-py2.7-macosx-10.11-intel.egg
sh-3.2# cd /Library/Python/2.7/site-packages/
sh-3.2# rm -f cx_Oracle-5.2.1-py2.7-macosx-10.11-intel.egg
sh-3.2# pip install cx_Oracle
Collecting cx_Oracle
  Using cached cx_Oracle-5.2.1.tar.gz
Installing collected packages: cx-Oracle
  Running setup.py install for cx-Oracle ... done
Successfully installed cx-Oracle-5.2.1

再次试验：

sh-3.2# python
Python 2.7.10 (default, Oct 23 2015, 19:19:21)
[GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cx_Oracle
>>> exit()

==========================================

python对cx_Oracle的简单操作：

#! /usr/bin/python
import cx_Oracle
import os
os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8' #解决oracle数据库中的中文查出来是？？？
等乱码的问题dsnStr = cx_Oracle.makedsn("127.0.0.1", "1521", "orcl")
conn = cx_Oracle.connect(user="test", password="test", dsn=dsnStr)c=conn.cursor()
x=c.execute('select *  from TEST.TEST p WHERE ID<2')
print (x.fetchone())
c.close()
conn.close()

学习链接：http://joelvasallo.com/?p=276