ORACLE Instant Client 安装

一：综述

我们安装oracle 数据库软件时，会默认的安装客户端，但是有些时候我们可能不需要安装oracle数据库软件，只是需要安装某一个客户端。例如 我想在某台应用服务器上使用sql*plus客户端登录另一台服务器上的数据库，那么我就需要安装sql*plus客户端。

二：Instant Client downloads >>下载oracle instant Client包
http://www.oracle.com/technetwork/topics/linuxx86-64soft-092277.html
三：oracle 客户端安装方法（下面的安装方法 出自oracle官方文档）

See the Instant ClientHome Page for more information. >>关于Instant Client安装更详细的信息请参考Instant
ClientHome Page

1. Installation of ZIPfiles: >>zip包安装方法

1). Download the desired Instant Client ZIP files. Allinstallations require the Basic or Basic Lite package. >>下载相应版本的zip包(所有的客户端安装都必须安装Basic
或者BasicLite包)

2). Unzip the packages into a single directory such as"/opt/oracle/instantclient_12_1" that is accessible to yourapplication.

>>解压缩zip包到相应的目录下

3). Create the appropriate libclntsh.so and libocci.so linksfor the version of Instant Client. For example:
>>建立libclntsh.so和libocci.so软连接

cd/opt/oracle/instantclient_12_1
ln -slibclntsh.so.12.1 libclntsh.so
ln -slibocci.so.12.1 libocci.so

4). Set the environment variable LD_LIBRARY_PATH to thedirectory created in Step 2, for example:
>>设置LD_LIBRARY_PATH环境变量

export LD_LIBRARY_PATH=/opt/oracle/instantclient_12_1:$LD_LIBRARY_PATH

Alternatively, add this path to an ldconfig configuration file if there is noother Oracle software that will be impacted.
>>也可以把LD_LIBRARY_PATH路径加入到idconfig配置文件，这样不会影响到环境下其他oracle软件

5). To use supplied binaries such as SQL*Plus, update yourPATH environment variable, for example:
>>把sql*plus路径加入环境变量

exportPATH=/opt/oracle/instantclient_12_1:$PATH

6). Start your application. >>可以使用sqlplus了

2. Installation of RPMs: >>使用rpm包安装

1). Download the desired Instant Client RPM packages. Allinstallations require the Basic or Basic Lite RPM.
>>下载影响的rpm包(所有的客户端安装都必须安装Basic
或者Basic Lite包)

2). As the root user, installthe packages with "rpm". For example:
>>root用户安装rpm包，例如：

rpm -ivhoracle-instantclient12.1-basic-12.1.0.2.0-1.x86_64.rpm

3). Set the environmentvariable LD_LIBRARY_PATH to the appropriate directory for the Instant Clientversion, for example:
>>设置LD_LIBRARY_PATH环境变量

exportLD_LIBRARY_PATH=/usr/lib/oracle/12.1/client64/lib:$LD_LIBRARY_PATH

Alternatively, add this path to an ldconfig configuration file if there is noother Oracle software that will be impacted.
>>也可以把LD_LIBRARY_PATH路径加入到idconfig配置文件，这样不会影响到环境下其他oracle软件

4). To use supplied binaries such as SQL*Plus, update yourPATH environment variable, for example:
>>把sql*plus加入环境变量

exportPATH=/usr/lib/oracle/12.1/client64/bin:$PATH

5). Start your application.
>>可以使用sql*plus了