select tablespace_name,file_id,bytes,file_name from dba_data_files;
第二步 创建表空间 :以管理员system/admin 登录,创建表空间
CREATE TABLESPACE myTbSpace LOGGING DATAFILE 'D:/INSTALLSOFTWARE/MYORACLE/APP/ADMINISTRATOR/ORADATA/LWORCL/myTbSpace.DBF' SIZE 32 M AUTOEXTEND ON NEXT 32 M MAXSIZE 2048 M EXTENT MANAGEMENT LOCAL ;
第三步 创建用户 leiwei :以管理员system/admin 登录,创建用户,并授予用户雷伟创建dblink(所需权限见第四步)和view的权限
-- Create the user create user LEIWEI identified by "leiwei" default tablespace myTableSpace temporary tablespace TEMP profile DEFAULT password expire ; -- Grant/Revoke role privileges grant connect to LEIWEI; grant resource to LEIWEI; -- Grant/Revoke system privileges grant create any view to LEIWEI; grant create database link to LEIWEI; grant create public database link to LEIWEI; grant drop public database link to LEIWEI; grant unlimited tablespace to LEIWEI;
第四步 查看dblink需要哪些权限:以管理员system/admin 登录, 查看创建dblink需要哪些权限,将这些权限赋给对应用户如:leiwei
select * from user_sys_privs t where t.privilege like upper( '%link%' );
第五步 创建dblink :以普通用户leiwei/leiwei 登录,创建dblink
-- Create database link create database link DBLINK2AREA connect to YPDOOR IDENTIFIED BY ypdoor using '(DESCRIPTION=(ADDRESS_LIST= (ADDRESS=(PROTOCOL=TCP)(HOST=172.23.1.30)(PORT=1521)) ) (CONNECT_DATA= (SERVICE_NAME=orcl) ) )' ;
第六步 创建视图:以普通用户leiwei/leiwei 登录,创建view获取到dblink对象(172.23.1.30)数据库(orcl)中任意表(emp)的数据
create or replace view dblinkview as select * from emp@DBLINK2AREA
第七步 查询视图:以普通用户leiwei/leiwei 登录 ,查询视图 dblinkview验证数据是否link成功
select * from dblinkview t
八、建立同义词
-- Create the synonym create or replace synonym TELE_NOTE_GROUPS for PUSER.TELE_NOTE_GROUPS@DBLINK_PORTAL.REGRESS.RDBMS.DEV.US.ORACLE.COM;
九、导出库中对应用户下的数据
exp ypdoor/[email protected]/lworcl file=d:/20111231ypdoor.dmp full=y