Re: Materialized Views 9i vs 10g

  • From: "Jeffrey Beckstrom" <JBECKSTROM@xxxxxxxxx>
  • To: <Chuck.Boddy@xxxxxxxxxxxxxxx>
  • Date: Thu, 19 Aug 2010 14:30:34 -0400

Didn't the default for MV change with 10g from doing a truncate to doing a 
Jeffrey Beckstrom
Database Administrator
Greater Cleveland Regional Transit Authority
1240 W. 6th Street
Cleveland, Ohio 44113

>>> Jared Still <jkstill@xxxxxxxxx> 8/19/10 1:58 PM >>>

On Thu, Aug 19, 2010 at 8:47 AM, Chuck Boddy <Chuck.Boddy@xxxxxxxxxxxxxxx> 


I am taking Materialized Views that were initially built on a 9i database and 
rebuilding them on a 10g database – verbatim. I am noticing that the 
performance is noticeably degraded. Checked out the Explain Plan on 9i vs 10g 
for some the materialized views, and they would indicate that on 10g, the 
materialized views should at least perform the same OR performance should be 
approved. Any ideas would be appreciated.

What does performance mean?

Too long to apply changes?

Too long to select?

etc, etc, etc.
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
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