• oracle用户创建及权限设置


    权限:

      create session

      create table

      unlimited tablespace

      connect

      resource

      dba

      例:

      #sqlplus /nolog

      SQL> conn / as sysdba;

      SQL>create user username identified by password

      SQL> grant dba to username;

      SQL> conn username/password

      SQL> select * from user_sys_privs;

      我们将从创建Oracle用户权限表开始谈起,然后讲解登陆等一般性动作,使大家对Oracle用户权限表有个深入的了解。

      一、创建

      sys;//系统管理员,拥有最高权限

      system;//本地管理员,次高权限

      scott;//普通用户,密码默认为tiger,默认未解锁

      二、登陆

      sqlplus / as sysdba;//登陆sys帐户

      sqlplus sys as sysdba;//同上

      sqlplus scott/tiger;//登陆普通用户scott

      三、管理用户

      create user zhangsan;//在管理员帐户下,创建用户zhangsan

      alert user scott identified by tiger;//修改密码

      四,授予权限

      1、默认的普通用户scott默认未解锁,不能进行那个使用,新建的用户也没有任何权限,必须授予权限

      GRANT
       CREATE SESSION, CREATE ANY TABLE, CREATE ANY VIEW ,CREATE ANY INDEX, CREATE ANY PROCEDURE,
       ALTER SESSION,ALTER ANY TABLE ,ALTER ANY INDEX, ALTER ANY PROCEDURE,
       DROP ANY TABLE, DROP ANY VIEW, DROP ANY INDEX, DROP ANY PROCEDURE,
       SELECT ANY TABLE, SELECT ANY SEQUENCE,
       INSERT ANY TABLE, UPDATE ANY TABLE, DELETE ANY TABLE
      TO username;

      grant create session to zhangsan;//授予zhangsan用户创建session的权限,即登陆权限

      grant unlimited tablespace to zhangsan;//授予zhangsan用户使用表空间的权限

      grant create table to zhangsan;//授予创建表的权限

      grante drop table to zhangsan;//授予删除表的权限

      grant insert table to zhangsan;//插入表的权限

      grant update table to zhangsan;//修改表的权限

      grant all to public;//这条比较重要,授予所有权限(all)给所有用户(public)

      2、oralce对权限管理比较严谨,普通用户之间也是默认不能互相访问的,需要互相授权

      

      grant select on tablename to zhangsan;//授予zhangsan用户查看指定表的权限

      grant drop on tablename to zhangsan;//授予删除表的权限

      grant insert on tablename to zhangsan;//授予插入的权限

      grant update on tablename to zhangsan;//授予修改表的权限

      grant insert(id) on tablename to zhangsan;

      grant update(id) on tablename to zhangsan;//授予对指定表特定字段的插入和修改权限,注意,只能是insert和update

      grant alert all table to zhangsan;//授予zhangsan用户alert任意表的权限

      五、撤销权限

      基本语法同grant,关键字为revoke

    例如::revoke drop any view,drop any table from scott;

      六、查看权限

      select * from user_sys_privs;//查看当前用户所有权限

      select * from user_tab_privs;//查看所用用户对表的权限

      七、操作表的用户的表

      

      select * from zhangsan.tablename

      八、权限传递

      即用户A将权限授予B,B可以将操作的权限再授予C,命令如下:

      grant alert table on tablename to zhangsan with admin option;//关键字 with admin option

      grant alert table on tablename to zhangsan with grant option;//关键字 with grant option效果和admin类似

      九、角色

      角色即权限的集合,可以把一个角色授予给用户

      create role myrole;//创建角色

      grant create session to myrole;//将创建session的权限授予myrole

      grant myrole to zhangsan;//授予zhangsan用户myrole的角色

      drop role myrole;删除角色

      

      编辑特别推荐:

      Oracle需要启动的几个服务

      oracle简单触发器

      Oracle分页SQL

    出处:http://www.cnblogs.com/shlcn/archive/2011/07/21/2112879.html

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  • 原文地址:https://www.cnblogs.com/mq0036/p/4732244.html
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