数据库用的是 Oracle 11g，PHP连接Oracle 非常慢，PHP连接Oracle非常慢，体现在，如果很久没连接oracle，那么再连接oracle，那会
数据库用的是 Oracle 11g
PHP连接Oracle 非常慢PHP连接Oracle非常慢，体现在，如果很久没连接oracle，那么再连接oracle，，那会花费20~40秒的时间。但是之后的连接会非常快。
网站架构
PHP Version 5.5.12 Apache 2.4.9 Win7 64 连接Oracle使用PHP OCI8 的扩展 程序CodeIgniter连接代码（这一行代码第一次连接会花费20~30秒之后就很快）
{ , ); } JAVA WEBLOIG连接非常快但是另外Java+Weblogic连接这个oracle数据库却非常快
寻求解决思路需要做一个会员中心，但是用到的是这个oracle数据库，网站是PHP。不可能让用户第一次等待20~40秒时间的。
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Oracle 11g 在RedHat Linux 5.8_x64平台的安装手册
Linux-6-64下安装Oracle 12C笔记
在CentOS 6.4下安装Oracle 11gR2(x64)
Oracle 11gR2 在VMWare虚拟机中安装步骤
Debian 下 安装 Oracle 11g XE R2
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