Oracle常用命令累计

用户解锁: 

ALTER USER username ACCOUNT UNLOCK;

查询数据库状态: 

select status from v$instance;

需要实例启动,且是started状态;

select open_mode from v$database;

需要数据库是open,不能查询出是否是mount还是open.

查看用户系统权限：

select * from dba_sys_privs;select * from session_privs;select * from user_sys_privs;

查看用户对象权限：

select * from dba_tab_privs;select * from all_tab_privs;select * from user_tab_privs;