Python源码安装cx_Oracle
最近接触了下监控平台Zenoss，其中涉及到Oracle的插件ZenPacks.community.OracleMon，使用该插件必须要安装Python的cx_Oracle。接
最近接触了下监控平台Zenoss，其中涉及到Oracle的插件ZenPacks.community.OracleMon，使用该插件必须要安装Python的cx_Oracle。接下来说说如何安装它。
一、涉及软件包
1、cx_Oracle
下载地址：?source=navbar
我下载的是最新版的cx_Oracle-5.1.2.tar.gz
2、Oracle_client
使用cx_Oracle必须要安装Oracle_client端，或者你已经安装了Oracle数据库。
下载地址：
以连接Oracle11为例需要下载以下rpm包：
oracle-instantclient11.2-basic-11.2.0.4.0-1.x86_64.rpm
oracle-instantclient11.2-jdbc-11.2.0.4.0-1.x86_64.rpm
oracle-instantclient11.2-sqlplus-11.2.0.4.0-1.x86_64.rpm
oracle-instantclient11.2-devel-11.2.0.4.0-1.x86_64.rpm
oracle-instantclient11.2-odbc-11.2.0.4.0-1.x86_64.rpm
oracle-instantclient11.2-tools-11.2.0.4.0-1.x86_64.rpm
软件包都下载完后，我们开始来安装。
二、源码安装
1、Oracle_client端安装：
# rpm -ivh oracle-instantclient11.2-basic-11.2.0.4.0-1.x86_64.rpm oracle-instantclient11.2-jdbc-11.2.0.4.0-1.x86_64.rpm oracle-instantclient11.2-sqlplus-11.2.0.4.0-1.x86_64.rpm oracle-instantclient11.2-devel-11.2.0.4.0-1.x86_64.rpm oracle-instantclient11.2-odbc-11.2.0.4.0-1.x86_64.rpm oracle-instantclient11.2-tools-11.2.0.4.0-1.x86_64.rpm
# echo /usr/lib/oracle/11.2/client64/lib/ >> /etc/ld.so.conf
# ldconfig
如果不进行ldconfig配置，在运行cx_Oracle时会报以下错误：
libclntsh.so.11.1: cannot open shared object file: No such file or directory
2、设置相应用户的环境变量：
在这里需要说明下，你使用哪个帐户装cx_Oracle就需要配置哪个帐户的环境变量，以下已root帐户为例；
如果不配置环境变量、或环境变量配置不正确，在安装cx_Oracle时，，会报各种错误，比如说：
oci.h: No such file or directory
#vi ~/.bashrc
export TNS_ADMIN="/usr/lib/oracle"
export ORACLE_HOME="/usr/lib/oracle/11.2/client64"
export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${ORACLE_HOME}/lib"
export PATH="${PATH}:${ORACLE_HOME}"
#source ~/.bashrc
3、源码安装
#tar -zxvf cx_Oracle-5.1.2.tar.gz
#cd cx_Oracle-5.1.2
#python setup.py install
4、安装成功后相应检查
#python
Python 2.7.2 (default, Aug 21 2013, 12:12:55)
[GCC 4.4.4 20100726 (Red Hat 4.4.4-13)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>import cx_Oracle
>>>
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