sqlplus command to log in to Oracle

1 Overview

• sql*plus There are two ways to log in to the Oracle database through the command line
  • Method 1: Through the sql*plus command window (when downloading Oracle, it comes with it)
    
  • Method 2: Through cmd window ( 即使忘记了密码，也可以登录)
    

2 Three login methods

方式1：
> sqlplus / as sysdba

方式2：
> sqlplus username/password@ip:port/sid
> sqlplus username/password@orcl -- 简写（前提：配置了 TNS），以下同

方式3：（推荐）
> sqlplus /nolog
> conn username/password@ip:port/sid

• If “TNS monitor” is configured , there is also a shorthand method

2.1 sqlplus / as sysdba

> sqlplus / as sysdba

2.2 sqlplus username/password@ip:port/sid

> sqlplus scott/scott@orcl -- 简写
>
> sqlplus username/password@ip:port/sid -- 全称

2.3 sqlplus /nolog

• First with no log of the log, temporarily connect database
• Benefits: Avoid logged on user name, password disclosure

> sqlplus /nolog
> conn scott/scott@orcl

3 Alternative commands

> exit 退出
> ho cls 清屏