alter user test default role all except create_table;

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alter user test default role all except create_table; 什么意思？

Select * from dba_role_privs中存在default 属性，缺省给用户授予的角色都是yes,就是logon以后可以使用的，如果是no的，需要在会话中

问题：角色授权的时候如何指定非缺省？如何修改角色的这个属性为缺省？为何要设定非缺省？

激活角色除了salary_adm

2009-10-9 13:40测试 exception …

创建一个本地管理的、一个extent区扩展是128k扩展16blocks的表空间

Create tablespace tbs_test datafile ‘F:ORADATATESTtbs_test_01.DBF’ size 20m autoextend on maxsize Unlimitedextent management local uniform size 128ksegment space management auto;

Alter Tablespace tbs_test add datafile ‘F:ORADATATEST tbs_test_02.DBF’ size 10m autoextend on maxsize Unlimited;

—改变数据文件的

This clause is valid only for bigfile tablespaces. It lets you increase or decrease the size of the single datafile to an absolute size. Use K, M, G, or T to specify the size in kilobytes, megabytes, gigabytes, or terabytes, respectively.

To change the size of a newly added datafile or tempfile in smallfile tablespaces, use the ALTER DATABASE … autoextend_clause (see database_file_clauses ).

Alter Database Datafile ‘F:ORADATATESTtbs_test_02.DBF’ Resize 10m; —设置数据库的缺省用户表空间为tbs_test

Alter databse default tablespace tbs_test;

—建立临时表空间组

Create temporary tablespace temp_test_01 tempfile ‘F:ORADATATESTtbs_temp_test_01.dbf’ size 20m Autoextend On Next 1m Maxsize Unlimited ,‘F:ORADATATESTtbs_temp_test_02.dbf’ size 20m Autoextend On Next 2m Maxsize Unlimited,‘F:ORADATATESTtbs_temp_test_03.dbf’ size 20m autoextend on Next 3mmaxsize unlimitedextent management local Uniform size 128ksegment space management Manual tablespace group tbs_grp_temp_01;—查看组成员

Select * from dba_tablespace_groups;

—设置数据库的缺省临时表空间组

Alter database default temporary tablespace group_temp;

—检查设置的参数是否正确

Select * from database_properties;

–create user 使用自定义的缺省表空间和临时表空间

Create user test identified by test;

—打开profile的口令校验，然后关闭口令校验

Alter profile default limit password_vertify_function null;

./rdbms/profile/utlpwdmg.sql

—授予系统权限和角色

Grant create session to test;

—创建角色create_table

Create role create_table ;

Grant create any table ,drop any table to create_table;

—授权

Grant create_table to test;

—查看当前用户角色中的default

GRANTEE GRANTED_ROLE ADMIN_OPTION DEFAULT_ROLE

TEST CREATE_TABLE NO NO

—如何启动？

只能通过

Alter user test default role all ;

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