1、 Oracle的创始人
2、 Oracle版本含义
3、 Oracle安装:用户种类及初始密码
在oracle10g\11g中默认scott被锁定。
4、 Oracle数据库的启动
a) 启动两个服务***Listener/***Service
b) “开始-》运行”-》sqlplus或 sqlplusw
5、 用户连接、解锁、锁定
a) conn/connect scott/tiger; system/orcl; sys/orcl as sysdba;
b) 解锁/锁定:alter user 用户名 account unlock/lock;
6、 用户的查找
a) 显示当前的用户:show user;
b) 显示系统默认的用户:select * from all_users;
7、 创建表空间
/*分为四步 */
/*第1步:创建数据表空间 */
create tablespace user_data
datafile 'D:\oracle\oradata\Oracle9i\user_data.dbf'
size 50m
autoextend on
next 50m maxsize 20480m
extent management local;
/*第2步:创建临时表空间 */
create temporary tablespace user_temp
tempfile 'D:\oracle\oradata\Oracle9i\user_temp.dbf'
size 50m
autoextend on
next 50m maxsize 20480m
extent management local;
//删除表空间
drop tablespace user_data including contents and datafiles
/*第3步:创建用户并指定表空间 */
create user username identified by password
default tablespace user_data
temporary tablespace user_temp;
8、 创建新用户
a) 创建用户密码:SQL>CREATE USER test IDENTIFIED BY test123;
b) 更改密码:SQL>ALTER USER test IDENTIFIED BY test321;
c) 给用户授系统权限:
- 授予连接数据库权限:
a) SQL> grant create session to test;
- 授予创建数据库表权限:
a) SQL> grant create table to test;
d) 给用户授对象权限:
- 授予查询表的权限
a) SQL> grant select on dept to test;
b) SQL> grant all on scott.dept to test;
e) 给用户授角色:
- SQL>grant connect,resource to test;
f) 收回权限
- SQL> revoke select on dept from test;
- SQL> revoke all on dept from test;
g) 查看权限
- 查看当前用户的权限:select * from session_privs;
- 查看系统角色的权限:select * from dba_sys_privs where grant=’RESOURCE’;
h) 删除用户
- SQL> drop user test;
- SQL> drop user test cascade;
Cascade 作用是在删除用户的同时,删除其用有的所有对象。
9、 创建角色
a) 创建语法:create role role1;
b) 删除语法:drop role role1;
c) 给角色分配权限和给用户分配一样:grant create table to role1
d) 撤销权限也一样:revoke create table from role1
10、 表
a) 查询数据库中有哪些表:select * from tab;
b) 查询某张表的结构:desc 表名;
11、代码
1 create tablespace user_data 2 datafile 'c:\oracle\oradata\orcl\user_data.dbf' 3 size 50m 4 autoextend on next 50m 5 maxsize 20480m 6 extent management local; 7 8 create temporary tablespace user_temp 9 tempfile 'c:\oracle\oradata\orcl\user_temp.dbf' 10 size 50m 11 autoextend on next 50m 12 maxsize 20480m 13 extent management local; 14 15 16 create temporary tablespace user_temp1 17 tempfile 'c:\oracle\oradata\orcl\user_temp1.dbf' 18 size 50m 19 autoextend on next 50m 20 maxsize 20480m 21 extent management local; 22 23 drop tablespace user_temp1; 24 25 --------------创建用户 26 drop user philis; 27 create user philis identified by philis 28 default tablespace user_data 29 temporary tablespace user_temp; 30 31 create user u1 identified by u1; 32 33 ---修改密码 34 alter user philis identified by 123; 35 alter user philis identified by philis; 36 --- 锁定和解锁账户 37 alter user system account lock; 38 alter user system account unlock; 39 40 41 -------授权 42 grant create session to philis; 43 grant select on scott.emp to philis; 44 revoke create session from philis; 45 revoke select on scott.emp from philis; 46 47 -----授予角色 48 grant resource,connect to philis ; 49 ----传递权限 50 grant select on scott.emp to philis with grant option; 51 revoke select on scott.emp from philis;