materialized view怎么实现分布式复制环境

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################################分布式环境下通过materialized view实现表高级复制

1.在主站点建立snapproxy用户

create user snapproxy identified by "snap001snap" default tablespace users;

BEGIN

dbms_repcat_admin.register_user_repgroup(

username => 'snapproxy',

privilege_type => 'proxy_snapadmin',

list_of_gnames => NULL);

END;

/

grant create session,select any table to snapproxy;

2.在主站点以要复制表的属主创建表的物化视图日志：(这里为hr用户)

conn hr/hr;

create snapshot log on employees with rowid,primary key;

create snapshot log on departments with rowid,primary key;

3.在物化视图站点创建复制表的目标用户：

create user mview identified by mview default tablespace usres;

grant connect,resource,create snashot,create database link to mview;

4.在物化视图站点创建物化视图刷新用户并赋权：

create user snapadmin identified by "snap001snap" default tablespace users;

EXECUTE dbms_repcat_admin.grant_admin_any_schema('snapadmin');

grant comment any table,lock any table,create any materialized view,alert any materialized view to snapadmin;

5.在物化视图站点以物化视图用户mview创建到snapproxy用户的dblink及物化视图：

create database link presale connect to snapproxy identified by "snap001snap" using '130.84.208.52:1621/presale';

create materialized view employees_mv refresh fast as select * from hr.employees@presale;

create materialized view departments_mv refresh fast as select * from hr.departments@presale;

6.snapadmin用户创建刷新组

begin

dbms_refresh.make(

name => 'RG_MVIEW_OWNER',

list => 'mview.employees_mv,mview.departments_mv',

next_date => sysdate,

interval => 'SYSDATE + 1/1440',

implicit_destroy => true,

lax => true);

end;

/

7.初始化刷新

execute dbms_refresh.refresh('RG_MVIEW_OWNER');

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