Oracle自学笔记（一）

create user gy_3004 identified by gy_3004  
default tablespace gy_3004_data  
temporary tablespace gy_3004_temp;  

--方式一： 
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 GY_3004;
--方式二： 
grant connect,resource,dba to gy_3004; 

create temporary tablespace MyTableSpace_temp 
  tempfile ‘D:\Oracle_11g\oradata\orcl\MyTableSpace_temp.dbf‘ 
  size 5M autoextend on 
  next 1M maxsize 5m 
  extent management local;

create tablespace MyTableSpace_data 
  logging datafile ‘D:\Oracle_11g\oradata\orcl\MyTableSpace_data.dbf‘ 
  size 5m autoextend on
  next 1m maxsize 5m 
  extent management local;

select name from v$database; 
select instance_name from v$instance;

select tablespace_name from dba_tablespaces;

drop user gy_3004 cascade;

drop tablespace  gy_3004_temp  including contents;
drop tablespace  gy_3004_data  including contents;

select tablespace_name,sum(bytes),max(bytes) from dba_free_space group by tablespace_name;

SELECT * FROM DBA_USERS;
SELECT * FROM ALL_USERS;
SELECT * FROM USER_USERS;