Re: Many tables in a view.

From: <Lisa_Koivu_at_gelco.com>
Date: Mon, 22 May 2000 08:44:30 -0500
Message-Id: <10505.106217@fatcity.com>

Jack, I ran into this. A complex view is going to confuse the optimizer big time. Avoid it if at all possible. The view will bite you sooner or later.

HTH
Lisa

"Jack van Zanen" <nlzanen1_at_ey.nl> on 05/22/2000 03:54:35 AM

Please respond to ORACLE-L_at_fatcity.com

To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> cc: (bcc: Lisa Koivu/GELCO)

Subject: Many tables in a view.

Hi All

I have a question:

If we join 11 tables in a view the performance of a select on that view will drop dramatically compared to 10 tables in the join. I have heard something about this being a optimizer issue that does not really like this many tables in a join.

What are the possible solutions to make these querries run better??

Jack

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Author: Jack van Zanen
  INET: nlzanen1_at_ey.nl

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Received on Mon May 22 2000 - 08:44:30 CDT