Oracle中采用sqlplus登录

sqlplus /nolog

conn /as sysdba

conn 用户名

在DOS环境下，输入“sqlplus /?”

常用：

sqlplus username/password  如：普通用户登录  sqlplus scott/tiger

sqlplus username/password@net_service_name 如: sqlplus scott/tiger@orcl
sqlplus  username/password as sysdba 如：sqlplus sys/admin as sysdba

sqlplus myusername/mypassword@ORCL

sqlplus myusername/mypassword@Host/ORCL

sqlplus 用户名/密码@IP地址:端口号/实例名

sqlplus /nolog

conn sys/@localhost/orcl as sysdba