Linux下sqlplus远程访问Oracle教程

第一步：下载instantclient

instantclient-basic-linux.x64-12.1.0.2.0.zip //必须

instantclient-sqlplus-linux.x64-12.1.0.2.0.zip //必须

instantclient-odbc-linux.x64-12.1.0.2.0.zip//此处不需要，为unixODBC连接时，需要使用的包

将上面2个zip包解压到到任意位置，例如/opt/oracle/instantclient_12_1.

下面为oracle官方文档

3. Create the appropriate libclntsh.so and libocci.so links for the version of Instant Client. For example:

cd /opt/oracle/instantclient_12_1

ln -s libclntsh.so.12.1 libclntsh.so

ln -s libocci.so.12.1 libocci.so

4. Install the libaio package, for example on Oracle Linux, run this as the root user: //注意我并未安装libaio包

yum install libaio

On some Linux distributions the package is called libaio1.

第二步：

配置环境变量:

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

export PATH=/opt/oracle/instantclient_12_1:$PATHNLS_LANG="AMERICAN_AMERICA.AL32UTF8"

在数据库中查询数据库服务名称

select value from v$parameter where name='service_names'

登录：sqlplus username/passwd@IP:port/servicename //特别注意port后为servicename，而不是instance name。

第三步：通过配置 tnsnames.ora访问oracle

配置环境变量

export TNS_ADMIN=/opt/oracle/instantclient_12_1

在TNS_ADMIN下建立tnsnames.ora文件

内容为：

oracledb =  //登陆的SID  
(DESCRIPTION =  
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.103.232)(PORT = 1521))  //IP地址和端口号  
    (CONNECT_DATA =  
      (SERVER = DEDICATED)  
      (SERVICE_NAME = orc9i)  //要链接数据库servicename
    )  
)  

登录sqlplus username/passwd@oracledb