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Oracle 11g和12c中角色resource区别

前言

    在Oracle 11gR2环境中,假如用户同时被授予了connect和resource角色后,即可登录数据库创建对象。但是在Oracle 12c中,如果用户只是被授予了这两个角色,可以创建对象,但是无法插入数据。

实验

下面做一个小实验:

Oracle 11g环境:

(1)创建表空间

CREATE TABLESPACE test DATAFILE

  '/u01/app/oracle/oradata/bond/test01.dbf' SIZE 5242880

  AUTOEXTEND ON NEXT 1310720 MAXSIZE 32767M

  LOGGING ONLINE PERMANENT BLOCKSIZE 8192

  EXTENT MANAGEMENT LOCAL AUTOALLOCATE DEFAULT

 NOCOMPRESS  SEGMENT SPACE MANAGEMENT AUTO;

(2)创建用户并授权

create user test identified by "test" default tablespace test;

grant resource,connect to test;

(3)创建对象并插入数据

[oracle@bond ~]$ sqlplus test/test

SQL*Plus: Release 11.2.0.4.0 Production on Sun Aug 18 13:56:26 2019

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

With the Partitioning, Oracle Label Security, OLAP, Data Mining,

Oracle Database Vault and Real Application Testing options

SQL> create table t_dict as

  2  select * from dict where rownum <=100;

Table created.

插入数据成功!

Oracle 12c环境

(1)创建表空间

CREATE TABLESPACE test DATAFILE

  '/u01/app/oracle/oradata/bond/test01.dbf' SIZE 5242880

  AUTOEXTEND ON NEXT 1310720 MAXSIZE 32767M

  LOGGING ONLINE PERMANENT BLOCKSIZE 8192

  EXTENT MANAGEMENT LOCAL AUTOALLOCATE DEFAULT

 NOCOMPRESS  SEGMENT SPACE MANAGEMENT AUTO;

(2)创建用户并授权

create user test identified by "test" default tablespace test;

grant resource,connect to test;

(3) 建对象并插入数据

[oracle@bond ~]$ sqlplus test/test

SQL*Plus: Release 12.2.0.1.0 Production on Fri Sep 6 19:53:16 2019

Copyright (c) 1982, 2016, Oracle.  All rights reserved.

Connected to:

Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production

SQL> create table t_dict as

  2  select * from dict where rownum <=100;

select * from dict where rownum <=100

              *

ERROR at line 2:

ORA-01950: no privileges on tablespace 'TEST'

插入数据失败。

原因分析 

    对比11g和12c的角色权限及用户权限可知,当用户被授予connect和resource权限后,11g默认会授予用户UNLIMITED TABLESPACE权限,而12c并没有默认授予该权限。

    查询官网得知,11g R2的这种现象貌似是一个bug,而12c修复了这个bug。官网解释如下:

The  UNLIMITED TABLESPACE  system privilege will be removed from the  RESOURCE  role in a future Oracle Database release (reference Bug 7614645).

思考

      既然12c不能像11g那样直接授予用户connect和resource权限即可使用,那么该怎么去创建用户并分配权限呢?

以下给个创建普通用户的示例:

CREATE TABLESPACE test DATAFILE

  '/u01/app/oracle/oradata/bond/test01.dbf' SIZE 5242880

  AUTOEXTEND ON NEXT 1310720 MAXSIZE 32767M

  LOGGING ONLINE PERMANENT BLOCKSIZE 8192

  EXTENT MANAGEMENT LOCAL AUTOALLOCATE DEFAULT

 NOCOMPRESS  SEGMENT SPACE MANAGEMENT AUTO;

 


CREATE TEMPORARY TABLESPACE test_temp TEMPFILE

  '/u01/app/oracle/oradata/bond/test_temp01.dbf' SIZE 33554432

  AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M

  EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1048576;


create user test identified by "test"

default tablespace test

quota 30G on test

temporary tablespace test_temp;

更多Oracle相关信息见Oracle 专题页面 https://www.linuxidc.com/topicnews.aspx?tid=12

原文链接:https://www.linuxidc.com/Linux/2019-09/160669.htm

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