安装oracle client

安装oracle client
背景，oracle数据库在另一台Linux上，现在需要从一台服务器到另一台服务器上，所以需要安装一个oracle client

目录

(1). 教程和下载地址

总共下载五个包 用在线安装的方法 rpm
教程：
https://blog.csdn.net/karloo/article/details/51862226
下载地址：
http://www.oracle.com/technetwork/database/database-technologies/instant-client/downloads/index.html

是发现找不到sqlplus命令，而且有些话没讲明白，然后换了一个教程，然后发现自己的包没有安装完成，然后按照原来的教程继续做

(2). 环境变量

如果不确定有没有配好 就用命令配

  989  export  ORACLE_HOME=/usr/lib/oracle/11.2/client64
  990  export  TNS_ADMIN=$ORACLE_HOME/network/admin
  991  export  NLS_LANG='simplified chinese_china'.ZHS16GBK
  992  export  LD_LIBRARY_PATH=$ORACLE_HOME/lib 
  993  export  PATH=$ORACLE_HOME/bin:$PATH

(3).乱码

sqlplus之后，可能会出现乱码的问题 采取的办法是（说明还是utf8的问题）

echo 'export NLS_LANG="AMERICAN_AMERICA.UTF8"'>>/etc/profile

(4). 测试是否正确安装

https://www.cnblogs.com/jiaxiaoai/archive/2011/05/09/2041008.html

查看当前库的所有数据表

  select * from all_tables;
  select table_name from all_tables;  （用的是这个）
  select table_name from user_tables;
  select table_name from all_tables where owner='用户名';

最后汇总所有的命令

  rpm -ivh oracle-instantclient11.2-basic-11.2.0.4.0-1.x86_64.rpm
  rpm -ivh oracle-instantclient11.2-odbc-11.2.0.4.0-1.x86_64.rpm 
  rpm -ivh oracle-instantclient11.2-jdbc-11.2.0.4.0-1.x86_64.rpm 
  rpm -ivh oracle-instantclient11.2-sqlplus-11.2.0.4.0-1.x86_64.rpm 
  rpm -ivh oracle-instantclient11.2-devel-11.2.0.4.0-1.x86_64.rpm 

  mkdir -p /usr/lib/oracle/11.2/client64/network/admin/
  vim /usr/lib/oracle/11.2/client64/network/admin/tnsnames.ora
  vim  ~/.bashrc
  source ~/.bashrc
  echo 'export NLS_LANG="AMERICAN_AMERICA.UTF8"'>>/etc/profile
  source /etc/profile

  sqlplus username/passwd//10.113.1.50:1521/orcl;
  select table_name from all_tables;

这是中间修改过的文件

[root@localhost ~]# vim /usr/lib/oracle/11.2/client64/network/admin/tnsnames.ora

        ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = *IP*)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = *SID*)
    )
  )
~    

[root@localhost ~]# vim  ~/.bashrc

# .bashrc

# User specific aliases and functions

alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'

# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi

export  ORACLE_HOME=/usr/lib/oracle/11.2/client64
export  TNS_ADMIN=$ORACLE_HOME/network/admin
export  NLS_LANG='simplified chinese_china'.ZHS16GBK
export  LD_LIBRARY_PATH=$ORACLE_HOME/lib
export  PATH=$ORACLE_HOME/bin:$PATH

thanks for sjx‘s help！