oracle数据库常用操作（1）

一、创建表空间
1.临时表空间
create temporary tablespace test_temp tempfile 'E:/test_temp01.dbf' size 32m autoextend on next 32m maxsize 2048m

extent management local;
2.非临时表空间
create tablespace test_data logging datafile 'E:/test_data01.dbf' size 32m autoextend on next 32m maxsize 2048m

extent management local;

二、删除表空间（即使是临时表空间也不用加temporary）
drop tablespace test_temp including contents and datafiles;

三、创建用户
1. create user jiangyi identified by yi default tablespace test_data;
2. create user jiangyi identified by yi default tablespace test_data temporary tablespace test_temp;
四、删除用户
drop user jiangyi cascade;
五、连接用户
用法: CONN[ECT] [logon] [AS {SYSDBA|SYSOPER}]
其中 <logon>  ::= <username>[/<password>][@<connect_identifier>] | /
eg.   conn system/map@map;

六、给用户授予权限
1.GRANT
　　CREATE SESSION, CREATE ANY TABLE, CREATE ANY VIEW ,CREATE ANY INDEX, CREATE ANY PROCEDURE,
　　ALTER ANY TABLE, ALTER ANY PROCEDURE,
　　DROP ANY TABLE, DROP ANY VIEW, DROP ANY INDEX, DROP ANY PROCEDURE,
　　SELECT ANY TABLE, INSERT ANY TABLE, UPDATE ANY TABLE, DELETE ANY TABLE
　　TO jiangyi;（如果没有给用户授予权限，是无法连接该用户的。例如，ERROR: ORA-01045: user JIANGYI lacks CREATE

SESSION privilege; logon denied）

2.将role这个角色授与username,也就是说，使username这个用户可以管理和使用role所拥有的资源

  GRANT role TO username;
七、查看用户
SELECT * FROM DBA_USERS;
SELECT * FROM ALL_USERS;
SELECT * FROM USER_USERS;
八、查看用户系统权限
SELECT * FROM DBA_SYS_PRIVS;
SELECT * FROM USER_SYS_PRIVS;
九、查看用户对象或角色权限
SELECT * FROM DBA_TAB_PRIVS;
SELECT * FROM ALL_TAB_PRIVS;
SELECT * FROM USER_TAB_PRIVS;
查看所有角色
SELECT * FROM DBA_ROLES

查看用户或角色所拥有的角色
SELECT * FROM DBA_ROLE_PRIVS;
SELECT * FROM USER_ROLE_PRIVS;