Xml feature in 10g

Hi,
I have idea that there were some issues in 9i with xmltype and materialized views which are now cleared in 10g.i want to know in brief what were the issues and how they got solved.its imp for me.can anyone help me more on this?
Thanks for the help

The easiest way to consistently find out this kind of information is to read the Oracle documentation for the new version. At the front of the document, Oracle often has a section called 'New Features', and many new features are based on things (issues) that have been 'cleared up'.
The second easiest way is to read the patch summaries on Metalink.

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