Remote Materialized View containing joins

From: Xu, Roger <Roger.Xu_at_dpsg.com>
Date: Wed, 20 May 2009 10:32:04 -0600
Message-ID: <3DC31002EB0BDD46B2B5730CEDF027704D8EA3_at_bcxoemb03.dpsg.net>

I am trying to go with fast refresh but I am not sure the performance issue I may face. Any suggestion? (10.2.0.4)  

• creating MV logs in the remote database

CREATE MATERIALIZED VIEW LOG ON sales WITH ROWID;

CREATE MATERIALIZED VIEW LOG ON times WITH ROWID;

CREATE MATERIALIZED VIEW LOG ON customers WITH ROWID;  

• creating MV in the local database

CREATE MATERIALIZED VIEW detail_sales_mv

BUILD IMMEDIATE REFRESH FAST ON DEMAND AS

SELECT s.rowid "sales_rid", t.rowid "times_rid", c.rowid "customers_rid",

       c.cust_id, c.cust_last_name, s.amount_sold, s.quantity_sold, s.time_id

FROM sales_at_remotedb s, times_at_remotedb t, customers_at_remotedb c

WHERE s.cust_id = c.cust_id

  AND s.time_id = t.time_id;    

CREATE INDEX mv_ix_cust ON detail_sales_mv("customers_rid");

CREATE INDEX mv_ix_time ON detail_sales_mv("times_rid");

CREATE INDEX mv_ix_sale ON detail_sales_mv("sales_rid");    

Thanks,  

Roger Xu  

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Received on Wed May 20 2009 - 11:32:04 CDT