sys用户，密码文件dba权限的关系:oracle@ywdb ~]$ sqlplus /as sysdba SQL*Plus: Release 11.1.0.7.0 - Production on Tue Apr 29 15:40:38 2014 Copyright (c) 1982, 2008, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - bit