My Oracle Support Banner

XmlElement/XmlAgg/XmlForest Query Takes Longer in 10.2.0 Than In 9.2.0 (Doc ID 1111453.1)

Last updated on MAY 27, 2010

Applies to:

Oracle Server - Standard Edition - Version: and later   [Release: 10.2 and later ]
Information in this document applies to any platform.


A query such as this:

     SELECT       XmlElement
                           (trunc(ROWNUM/100) a,
                            trunc(ROWNUM/100) b,
                            trunc(ROWNUM/100) c,
                            trunc(ROWNUM/100) c,
                            trunc(ROWNUM/100) e,
                            trunc(ROWNUM/100) f,
                            trunc(ROWNUM/100) g,
                            1 h
       FROM       dual z
       CONNECT BY LEVEL<=16500
       GROUP BY   trunc(ROWNUM/1650);

runs much slower in (for example, Elapsed: 00:01:23.57) than it did in (for example, Elapsed: 00:00:13.17).


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.