工作需要在ubuntu上安装Oracle InstantClient，按道理也比较简单，今天就将安装过程记录下来。

环境：

Ubuntu14.04 LTS Server

因为服务器用的是 Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production

根据要求，我分别下载了Basic、SDK和Sqlplus包。

下面介绍两种安装方式：

一、直接下载相关ZIP包，这种方式最为简单

1、将三个ZIP包解压之后，合并到一起，然后上传到Ubuntu的某个用户下

2、默认文件夹为instantclient_12_1，设置775权限即可$ sudo chmod 775 -R instantclient_12_1/

3、测试程序运行，显示内部服务器错误。报错信息如下：Oracle Client library cannot be loaded: libclntsh.so

提示无效的命令，这肯定是环境变量的问题

4、添加环境变量，然后执行没有问题$ export PATH=/home/lst001/pack/instantclient_12_1/:$PATH

$ export LD_LIBRARY_PATH=/home/lst001/pack/instantclient_12_1/:$LD_LIBRARY_PATH

5、我们同样可以将该环境变量添加到系统级别，这时候每次重启就直接读取环境变量了$ sudo vi /etc/profile

将上面的信息添加到该文件的后面

然后生效环境变量$ source /etc/profile

$ echo $PATH

/home/lst001/pack/instantclient_12_1/:/home/lst001/anaconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

这样就安装完毕了。

二、下载相关的RPM包

这种方式就比较麻烦了，因为RPM包是红帽和CentOS才识别的，如何才能在Ubuntu上安装RPM呢？

1、安装alien工具apt-get install alien

2、使用alien命令将RPM转换为Ubuntu识别的deb包$ sudo alien -k oracle-instantclient-basic-10.2.0.5-1.x86_64.rpm

oracle-instantclient-basic_10.2.0.5-1_amd64.deb generated

$ sudo alien -k oracle-instantclient-devel-10.2.0.5-1.x86_64.rpm

oracle-instantclient-devel_10.2.0.5-1_amd64.deb generated

$ sudo alien -k oracle-instantclient-sqlplus-10.2.0.5-1.x86_64.rpm

oracle-instantclient-sqlplus_10.2.0.5-1_amd64.deb generated

3、使用dpkg命令安装deb包$ sudo dpkg -i oracle-instantclient-basic_10.2.0.5-1_amd64.deb

Selecting previously unselected package oracle-instantclient-basic.

(Reading database ... 61710 files and directories currently installed.)

Preparing to unpack oracle-instantclient-basic_10.2.0.5-1_amd64.deb ...

Unpacking oracle-instantclient-basic (10.2.0.5-1) ...

Setting up oracle-instantclient-basic (10.2.0.5-1) ...

Processing triggers for libc-bin (2.19-0ubuntu6.5) ...

$ sudo dpkg -i oracle-instantclient-devel_10.2.0.5-1_amd64.deb

Selecting previously unselected package oracle-instantclient-devel.

(Reading database ... 61725 files and directories currently installed.)

Preparing to unpack oracle-instantclient-devel_10.2.0.5-1_amd64.deb ...

Unpacking oracle-instantclient-devel (10.2.0.5-1) ...

Setting up oracle-instantclient-devel (10.2.0.5-1) ...

$ sudo dpkg -i oracle-instantclient-sqlplus_10.2.0.5-1_amd64.deb

Selecting previously unselected package oracle-instantclient-sqlplus.

(Reading database ... 61768 files and directories currently installed.)

Preparing to unpack oracle-instantclient-sqlplus_10.2.0.5-1_amd64.deb ...

Unpacking oracle-instantclient-sqlplus (10.2.0.5-1) ...

Setting up oracle-instantclient-sqlplus (10.2.0.5-1) ...

4、系统会默认安装在如下路径supermap@computer:/usr/lib/oracle/10.2.0.5/client64$ pwd

/usr/lib/oracle/10.2.0.5/client64

5、同样，我们将环境变量添加上去即可export ORACLE_HOME=/usr/lib/oracle/10.2.0.5/client64

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH

export PATH=$ORACLE_HOME/bin:$PATH

相对来说，还是第一种方法比较简单，但是通过第二种方法也学习到了如何在必须安装RPM条件下的解决办法！