DBUri and xsl transform hanging

Question

Hi All,
I'm using the DBUriServlet (oradb) to access XML data stored in Oracle. If I query the data without transforming it, E.g. http://<machine>:<port>/oradb/TABLE_NAME/...etc...?contenttype=text/xml&rowsettag=<row-tag>
Everything works fine and returns the XML in seconds.
I've got and Xpath index setup that seems to be working, according to execution plan.
However, if I try and transform this data using xsl, by feeding in "transform" on the query-string I never receive the results in the browser. E.g
http://.../oradb/..?transform=/public/xsl/trans.xsl&contenttype=text/html&rowsettag=test
The data set is trivial, 20 xml files (10-30kB); the XSL is pretty ugly but other transformers handle it OK. I've tried it with msxsl and xalan, and have no problems; however, running it through the DBUriServlet as above, causes the Oracle process to eat huge amounts of memory (very low CPU usage) and never hang.
Anyone seen this behaviour? Any ideas what to look at? Also, is anyone out there using this Servlet to access the data in a production environment? Or is the servlet only meant for demos/evaluations?
Env = 9.2.0.3 on Solaris 64 or Windows 2000.
Thanks for your help, I'm stumped and the clock stopped ticking on this project months ago! ;)
John

Answer 1

Thanks for the reply.
If I try
select xdburitype('path to xsl').transform(xdburitype('path to xml')) from dual;
I get ORA-00904: "SYS"."XDBURITYPE"."TRANSFORM": invalid identifier. From the docs I think transform is a function of xmltype. Please correct me if I'm wrong.
However, I tried the following:
SELECT XMLTransform( xdbUriType(path to xml).getXML( ), xdbUriType(path to xsl).getXML( ) ).getClobVal( ) FROM DUAL;
I get the first 4 lines of the HTML output. Irrespective of whay I set serveroutput or linessize to.
One thing to mention, if I use DBUri and via xpath limit the resultset of the query to be a single XML file returned, the transform works fine.
I appreciate your helps.
Cheers,
John