Oracle帐号基本管理

　1. Oracle安装完成后的用户名和密码

　　sys/change_on_install

　　system/manager

　　scott/tiger

　　sysman/oem_temp

　　internal/oracle

　　2.修改oracle用户的密码

　　SQL> conn sys/change_on_install as sysdba

　　Connected.

　　SQL> alter user sys identified by ******;

　　User altered.

　　3.解锁oracle用户

　　SQL> conn scott/tiger

　　ERROR:

　　ORA-28000: the account is locked

　　Warning: You are no longer connected to ORACLE.

　　SQL>conn sys/change_on_install as sysdba

　　Connected.

　　SQL> alter user scott account unlock;

　　User altered.