Large XML and Query performance

Question

This problem came to me from a Developer and she claims XML query on XMLType field is very slow when using large XML and is there any alternates. Details are below:
=============
Query:
select attributepool_id, attributepool_name, vintage , p.attributepool.extract('//attributepool/segmentationsystem/id/text()').getStringVal() ,
p.attributepool.extract('//attributepool/datasource/id/text()').getStringVal()
from saved_attributepools p
where user_id = 'CLPROFILE2' and vintage = 'SPRING_2003' order by attributepool_name
Table name:                saved_attributepools
Space:                    ecommerce
A Column Name:                attributepool
attributepool Column Type:      XmlType
One of xml contains 4Mbytes:     CORE LIFESTLY
When we try to get the data against this row, query is taking longer.
conn ecommerce@ecom3 --> 82 seconds (table has 65 rows)
conn ecommerce@oradev--> 34 seconds (table has only 4 rows)
We think that;
Oracle parse the entire XML document and load this document into an 'in-memory' DOM structure before executing the specified xpaths.
Adding INDEX into XmlType won't help as we don't use whereclasue against XmlType for this case.
We don't know 10g has solution for this or not.
Any suggestion will be greatly appreciated.

Answer 1

This problem came to me from a Developer and she claims XML query on XMLType field is very slow when using large XML and is there any alternates. Details are below:
=============
Query:
select attributepool_id, attributepool_name, vintage , p.attributepool.extract('//attributepool/segmentationsystem/id/text()').getStringVal() ,
p.attributepool.extract('//attributepool/datasource/id/text()').getStringVal()
from saved_attributepools p
where user_id = 'CLPROFILE2' and vintage = 'SPRING_2003' order by attributepool_name
Table name:                saved_attributepools
Space:                    ecommerce
A Column Name:                attributepool
attributepool Column Type:      XmlType
One of xml contains 4Mbytes:     CORE LIFESTLY
When we try to get the data against this row, query is taking longer.
conn ecommerce@ecom3 --> 82 seconds (table has 65 rows)
conn ecommerce@oradev--> 34 seconds (table has only 4 rows)
We think that;
Oracle parse the entire XML document and load this document into an 'in-memory' DOM structure before executing the specified xpaths.
Adding INDEX into XmlType won't help as we don't use whereclasue against XmlType for this case.
We don't know 10g has solution for this or not.
Any suggestion will be greatly appreciated.