1、在SQL Plus下,以DBA身份登陆 用户名/密码@服务器SID as sysdba 方法一:(注意必须用双引号把后面的引上) C:/Documents and Settings/ssy>sqlplus sys/system@test as sysdba SQL*Plus: Release 9.2.0.1.0 – Production on 星期一 3月 17 18:01:41 2008 Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved. 连接到: Oracle9i Enterprise Edition R