--创建一个表空间
CREATE TABLESPACE MYSPACE DATAFILE 'D:/MYSPACE.DBF' SIZE 10M AUTOEXTEND ON
--指定某个用户的默认的表空间是MYSPACE
ALTER USER SYSTEM IDENTIFIED BY NIIT DEFAULT TABLESPACE MYSPACE QUOTA UNLIMITED ON MYSPACE
COMMIT

--删除表空间
DROP TABLESPACE MYSPACE

--删除表空间，带内容一起删除
DROP TABLESPACE MYSPACE INCLUDING CONTENTS

--删除表空间及其内容和物理文件
DROP TABLESPACE MYSPACE INCLUDING CONTENTS AND DATAFILES
COMMIT

--创建临时表空间
CREATE TEMPORARY TABLESPACE MYTEMP TEMPFILE 'D:/MYTEMP.DBF' SIZE 30M AUTOEXTEND ON
DROP TABLESPACE MYTEMP INCLUDING CONTENTS AND DATAFILES

--指定默认的表空间和临时表空间
ALTER USER TOM IDENTIFIED BY TOM123 DEFAULT TABLESPACE MYSPACE TEMPORARY TABLESPACE MYTEMP QUOTA UNLIMITED ON MYSPACE

--创建一个用户，指定密码，密码必须用字母开头
CREATE USER TOM IDENTIFIED BY TOM123

--删除用户
DROP USER JACK1
--删除用户及所有对象
DROP USER TOM CASCADE

--改变用户的表空间
ALTER USER TOM IDENTIFIED BY TOM1234 DEFAULT TABLESPACE MYSPACE QUOTA UNLIMITED ON MYSPACE

--tom没有权限，系统管理员sys,system赋予权限
--赋予系统权限,登陆，连接权限
GRANT CREATE SESSION TO TOM WITH ADMIN OPTION
--赋予创建表的权限
GRANT CREATE TABLE,CREATE USER,CREATE SEQUENCE TO TOM
--收回权限

REVOKE CREATE SESSION,CREATE USER,CREATE TABLE,CREATE SEQUENCE FROM TOM
--赋予TOM系统权限并将权限传递
GRANT CREATE SESSION,CREATE USER TO TOM WITH ADMIN OPTION
--收回权限
REVOKE CREATE SESSION,CREATE USER FROM TOM

--赋予TOM对象权限
GRANT SELECT ON SCOTT.EMP TO TOM
--收回对象权限
REVOKE SELECT ON SCOTT.EMP FROM TOM

--将预定义角色赋给用户
GRANT CONNECT TO TOM
--收回角色
REVOKE CONNECT FROM TOM
REVOKE RESOURCE FROM TOM

DROP USER TOM CASCADE

CREATE USER TOM IDENTIFIED BY TOM123 DEFAULT TABLESPACE MYSPACE QUOTA UNLIMITED ON MYSPACE

--RESOURCE角色给TOM
GRANT RESOURCE TO TOM
COMMIT

---自定义角色
--1、创建角色
CREATE ROLE ADS
--2、赋予角色相应权限
GRANT CREATE SESSION,CREATE TABLE,CREATE USER TO ADS

--3、将角色赋给相应用户
GRANT ADS TO TOM

--表空间迁移
--1、表空间下线
ALTER TABLESPACE MYSPACE OFFLINE
--2、修改更改后的物理文件地址
ALTER DATABASE RENAME FILE 'C:/MYSPACE.DBF' TO 'E:/MYSPACE.DBF'
--3、表空间上线
ALTER TABLESPACE MYSPACE ONLINE

--改变表空间后创建表所处的表空间
CREATE TABLE MTABLE
(
  TNAME VARCHAR2(20)
)
COMMIT