1）REMOTE_LOGIN_PASSWORDFILE=none且SQLNET.AUTHENTICATION_SERVICES= none：
oracle安装用户本地sqlplus “/ as sysdba”无法登录
非oracle安装用户本机sqlplus “sys/change_on_install as sysdba”无法登录
非oracle安装用户远程sqlplus “/ as sysdba_on_install@sid as sysdba”无法登录
（2）REMOTE_LOGIN_PASSWORDFILE=exclusive且SQLNET.AUTHENTICATION_SERVICES= none：
oracle安装用户本地sqlplus “/ as sysdba”无法登录
非oracle安装用户本机sqlplus “sys/change_on_install as sysdba”能登录
非oracle安装用户远程sqlplus “/ as sysdba_on_install@sid as sysdba”能登录
（3）REMOTE_LOGIN_PASSWORDFILE=none且SQLNET.AUTHENTICATION_SERVICES= (NTS)：
oracle安装用户本地sqlplus “/ as sysdba”能登录
非oracle安装用户本机sqlplus “sys/change_on_install as sysdba”无法登录
非oracle安装用户远程sqlplus “/ as sysdba_on_install@sid as sysdba”无法登录
（4）REMOTE_LOGIN_PASSWORDFILE=exclusive且SQLNET.AUTHENTICATION_SERVICES= (NTS)：
oracle安装用户本地sqlplus “/ as sysdba”能登录
非oracle安装用户本机sqlplus “sys/change_on_install as sysdba”能登录
非oracle安装用户远程sqlplus “/ as sysdba_on_install@sid as sysdba”能登录
