Oracle-用sqlplus登录的各种方式

1.本地登录

sqlplus / as sysdba

2.账号密码登录

sqlplus user/passwd as sysdba

3.选择实例登录

sqlplus user/passwd@实例名

4.连接远程数据库实例 sqlplus user/passwd@IP:端口/实例名

sqlplus user/passwd@192.168.1.2:1521/orcl

5.远程登录dba实例 sqlplus user/passwd@IP:端口/实例名 as sysdba  

sqlplus user/passwd@192.168.1.2:1521/orcl as sysdba