1.启动sqlplus 2.请输入用户名: sqlplus/as sysdba 3.输入口令: 直接回车 4.连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL>alter user sys identified by admin; 用户已更改。 SQL> conn sys/admin as sysdba; 已连接。 SQL> alter user system identified by manager; 用户已更改。 就搞定啦！