RE: Why Views are slow

RE: Why Views are slow

 

  

Some said materialized views are not a good way to go in an OLTP database. I responded on a different thread and was kicked back by the LazyDBA email Nazi; hope this one gets through...

Depends on the frequency at the which the materialized view is refreshed, and
the configuration you've applied to your database. Configure properly, watch
your scheduling, and the MV can work very well.

Nick

-------------- Original message --------------
From: "Jeff Ferrel " <oracledba-ezmlmshield-x10264957.[Email address protected]

>
> I have a developer that has run into this as well. I'd like to see more
> discussion on this, or if someone has access to any articles on this
> topic, please send them my way!
>
> Thanks to all,
>
> Jeffrey C. Ferrel
> DMS III
> State of Nevada
> 775.687.9327
> [Email address protected]
>
>
> -----Original Message-----
> From: Chamberlain John
> [mailto:oracledba-ezmlmshield-x87208536.[Email address protected]
> Sent: Wednesday, January 03, 2007 1:11 AM
> To: LazyDBA Discussion
> Subject: RE: Why Views are slow
>
>
> Views are not slow, but the query that constitutes the view may be. Try
> running the select statement that makes the view and then select from
> the
> view itself. Don't forget to apply the usual expected where clauses. The
> results should be pretty similar. Run some explain plans to check this.
>
> John.
>
> -----Original Message-----
> From: Sadiq Noorulla
> [mailto:oracledba-ezmlmshield-x33925902.[Email address protected]
> Sent: 03 January 2007 03:21
> To: LazyDBA Discussion
> Subject: Why Views are slow
>
> Hi Oracle Experts,
>
> I found quires using base table is Fast
> same after creation of view is Becoming Slow
>
> Any Reason
>
> Thanks in Advance
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