oracle 账号管理

  1、用户创建/删除

创建

sql> create user WEB_hgz identified by admin123;

User created.

SQL> col username fORMat a10;  --col为column缩写，format a10指定格式宽度为10个字符

SQL> col account_status format a15;

SQL> select username, account_status, lock_date, expiry_date from dba_users where username = 'web_hgz';

USERNAME   ACCOUNT_STATUS  LOCK_DATE           EXPIRY_DATE

---------- --------------- ------------------- -------------------

web_hgz         OPEN

删除

SQL> drop user“name”cascade;

  2、修改用户密码

SQL> alter user HR identified by admin123;

修改前：

SQL> select username,account_status,lock_date, expiry_date from dba_users where username ='HR';

USERNAME   ACCOUNT_STATUS  LOCK_DATE EXPIRY_DA
---------- --------------- --------- ---------
HR         EXPIRED                   29-NOV-15

修改后：

SQL> select username,account_status,lock_date, expiry_date from dba_users where username ='HR';

USERNAME                       ACCOUNT_STATUS                   LOCK_DATE
------------------------------ -------------------------------- ---------
EXPIRY_DA
---------
HR                             OPEN

  3、 解除用户锁定

SQL> alter user hr account unlock;

User altered.

SQL> select a.username, a.account_status, a.lock_date from dba_users a where a.username = 'HR';

USERNAME   ACCOUNT_STATUS                    LOCK_DATE

---------- -------------------------------- -------------------

HR         OPEN

  4、oracle用户登陆失败次数限制修改

a.查询密码连续输入出错的最大次数，超过该值则锁定该帐号：

SQL> select * from dba_profiles s where s.profile='DEFAULT' and resource_name='FaiLED_LOGIN_ATTEMPTS';         //FAILED_LOGIN_ATTEMPTS表示出错最大次数

b.修改登陆失败限制次数 

SQL>alter profile default limit failed_login_attempts unlimited;  //表示不受限

SQL>alter profile default limit failed_login_attempts 3;   //表示限制次数为3次

显示效果：
[oracle@localhost ~]$ sqlplus hr/admin123

ERROR:
ORA-28000: the account is locked

  5、赋予用户表空间权限

SQL>alter user ittbank default tablespace ittbank;

  6、授予用户管理权限：

grant connect,resource,dba to ittbank ;

  7、查看当前用户的角色

select * from user_role_privs;
select * from session_privs;

  8、查看当前用户的系统权限和表级权限

select * from user_sys_privs;
select * from user_tab_privs;

  9、查询用户表

select name from dba_users;

  10、显示当前用户

show user;