Oracle建立表空间和用户

Oracle建立表空间和用户

 

1.建立表空间和用户的步骤：

用户：

建立：create user leon identified by 111111;  
授权：grant connect,resource,dba to leon;

 

表空间：

建立表空间(一般建N个存数据的表空间和一个索引空间)：  
create tablespace leon_space  
datafile 'D:\Oracle\oradata\orcl\leon_space.dbf' size 500m 
tempfile 'D:\Oracle\oradata\orcl\leon_temp.dbf' size 100m
autoextend on next 50m maxsize 2048m; 

 

查看当前用户默认表空间：

select username,default_tablespace from user_users;

 

创建用户同时指定表空间：

create user leon identified by 111111 default tablespace leon_space;

 

例子：

创建表空间

create tablespace DEMOSPACE   
datafile 'E:/oracle_tablespaces/DEMOSPACE_TBSPACE.dbf'   
size 1500M autoextend on next 5M maxsize 3000M;

删除表空间

drop tablespace DEMOSPACE including contents and datafiles 

 

用户权限 

授予用户使用表空间的权限：

alter user leon quota unlimited on leon_space;  
或 alter user leon quota 500M on leon_space; 

修改用户的默认表空间：

alter user leon default tablespace leon_space;

 

完整例子：

    --表空间  
    CREATE TABLESPACE sdt  
    DATAFILE 'F:\tablespace\demo' size 800M  
             EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;   
    --索引表空间  
    CREATE TABLESPACE sdt_Index  
    DATAFILE 'F:\tablespace\demo' size 512M           
             EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;       
      
    --2.建用户  
    create user demo identified by demo   
    default tablespace demo;  
       
    --3.赋权  
    grant connect,resource to demo;  
    grant create any sequence to demo;  
    grant create any table to demo;  
    grant delete any table to demo;  
    grant insert any table to demo;  
    grant select any table to demo;  
    grant unlimited tablespace to demo;  
    grant execute any procedure to demo;  
    grant update any table to demo;  
    grant create any view to demo;  

 

四步法创建用户及表控件：

/*第1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;  
 
/*第2步：创建数据表空间  */
create tablespace user_data  
logging  
datafile 'D:\oracle\oradata\Oracle9i\user_data.dbf' 
size 50m  
autoextend on  
next 50m maxsize 20480m  
extent management local;  
 
/*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;  
 
/*第4步：给用户授予权限  */
grant connect,resource,dba to username;

 

 

导入导出命令：

exp demo/[email protected]:1521/orcl file=f:/f.dmp full=y  
exp demo/demo@orcl file=f:/f.dmp full=y  
imp demo/demo@orcl file=f:/f.dmp full=y ignore=y