1.安裝oracle instantclient-base 和sdk-base
http://www.oracle.com/technetwork/topics/linuxsoft-082809.html
2. yum install python-dev
build-essential libaio1（ 如不能按裝則按照這些庫）
3.設置環境變量
cd ~
vim .bash_profile
添加以下語句
export ORACLE_HOME=/usr/lib/oracle/12.1/client
export LD_LIBRARY_PATH=/usr/lib/oracle/12.1/client/lib
3.下載cx_oracle
https://pypi.python.org/pypi/cx_Oracle/5.1.3
python setup build && install
