Materialized Views - Overall Approach/Steps

From: VIVEK_SHARMA <VIVEK_SHARMA_at_infosys.com>
Date: Fri, 2 Sep 2005 12:43:17 +0530
Message-ID: <B5587533FCBD4344ADB8290B3EDDA12208AF90F9@kecmsg14.ad.infosys.com>

Jared,Tim, Folks

Following is our overall approach/Steps of transfer of DB from SUN to AIX using MV for your review.

At Source/Master DB:-

scott_at_ORA9IR1> alter table emp add constraint emp_pk 2 primary key ( empno );

Table altered.

(Since Unique indexes already PRE-Exist, above PK creation will be very Fast)

scott_at_ORA9IR1> create materialized view log on emp;

Materialized view log created.

At Target / Slave DB:-

ops$tkyte_at_ORA9IR2> create table emp as select * from emp_at_ora9ir1 where 1=0;

Table created.

ops$tkyte_at_ORA9IR2> create materialized view emp   2 on prebuilt table
  3 refresh complete
  4 as
  5 select * from emp_at_ora9ir1;

Materialized view created.

ops$tkyte_at_ORA9IR2>
ops$tkyte_at_ORA9IR2> begin

  2     dbms_refresh.make(
  3        name             =>'group1',
  4        list             =>'emp,dept',
  5        next_date        =>sysdate,
  6        interval         =>'sysdate+1/24',
  7        implicit_destroy =>true);

8 end;
9 /

PL/SQL procedure successfully completed.

ops$tkyte_at_ORA9IR2> exec dbms_refresh.refresh( 'GROUP1' );

PL/SQL procedure successfully completed.

ops$tkyte_at_ORA9IR2> alter materialized view emp refresh fast;

Materialized view altered.

At Source/Master DB:-

ops$tkyte_at_ORA9IR2> @connect scott/tiger_at_ora9ir1.localdomain

scott_at_ORA9IR1> update emp set ename = initcap(ename) where rownum = 1;

1 row updated.

scott_at_ORA9IR1> commit;

Commit complete.
(Above done to simulate Production updates on Source DB)

At Target / Slave DB:-

ops$tkyte_at_ORA9IR2> exec dbms_refresh.refresh( 'GROUP1' );

PL/SQL procedure successfully completed.

ops$tkyte_at_ORA9IR2> drop materialized view emp;

Materialized view dropped.

ops$tkyte_at_ORA9IR2> select count(*) from emp;

COUNT(*)

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Received on Fri Sep 02 2005 - 02:16:01 CDT

Materialized Views - Overall Approach/Steps - for review