1、关于scott用户的创建、解锁、修改密码
SQL> conn / as sysdbaConnected.SQL> @%oracle_home%\rdbms\admin\utlsampl.sql建立完成以后会自动退出sqlplus,请重新登录既可.运行sqlplus /nologSQL> conn scott/tiger
解锁scott用户以及修改其密码：
SQL> conn / as sysdbaConnected.SQL> alter user scott account unlock identified by tiger;解锁同时修改密码User altered.
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