系統管理員身份登路windows後:
1、開始——cmd
2、sqlplus / as sysdba(注意:sqlnet.ora文件,打開它看看是否有SQLNET.AUTHENTICATION_SERVICES= (NTS),如果沒有加上;查看當前用戶是否在ora_dba組,如果不在這個組,加入這個組)
3、alter user sys identified by NEWPASSWD;
--alter user sys identified by manager;
4、alter user system identified by NEWPASSWD;
--alter user system identified by manager;