Re: Materialized views in RBO

From: Christian Trassens <ctrassens_at_yahoo.com>
Date: Sat, 22 Sep 2001 06:58:11 -0700
Message-ID: <F001.00395993.20010922071017@fatcity.com>

The problem is that you can't use them with query rewrite feature. You can create them, but Oracle doesn't recognize them for using when anybody issues a query similar to their definition. Therefore, if you want to display their contents, you have to query them explicitly.

Regards.

• Amar Kumar Padhi <TS2017_at_emirates.com> wrote:
  >
  > Our production database runs in RBO. We are
  > evaluating the option of using
  > Materialized views. Oracle manuals says that even if
  > the parameter
  > OPTIMIZER_MODE is set to RULE, the use of these
  > features enables the CBO.
  > Has anyone used this feature in RBO?
  >
  > We tried out materialized views in test area. The
  > are working well in RBO,
  > but this was just basic testing.
  >
  > rgds
  > amar
  >
  >
  >
  

  ---

Eng. Christian Trassens
Senior DBA
Systems Engineer
ctrassens_at_yahoo.com
ctrassens_at_hotmail.com
Phone : 541149816062

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Received on Sat Sep 22 2001 - 08:58:11 CDT