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Karen PowellSubject: Java Heap error and -Xmx param
Author: Karen Powell
Date: 06 Feb 2008 12:09 PM
Hi,

I'm currently testing a process which extracts lots of user data into user-centric XML files (from SQL database). In order to test we need to be able to run counts throughout a collection of XML files (circa 20-30 thousand). The size of individual xml files can range from 1k to over 500k (although this is rare) depending on how much data has been accumulated on a user.

We've been using stylus studio to run xqueries on this data and have had some success. Now though we have started to experience java heap errors early on in the execution of the xquery. Having googled for a while we found stuff on the -Xmx parameter and managed to enter in the parameter for JRE in the tools>Options section up to -Xmx512m. However, we still get the java heap error with this param. We have tried setting it at 1024 and above but when running the query get an different error stating saxon needs JVM 1.4 or later. We have 1.6.0.3 installed

We have also updated the Java settings via control panel to -Xmx4096m. Not sure if this is necessary.

Can anyone tell me why Stylus studio insists we run JVM 1.4 or later when we're on 1.6 and how we might resolve this java heap problem?

Thanks in dvance :O)
Postnext
Tony LavinioSubject: Java Heap error and -Xmx param
Author: Tony Lavinio
Date: 06 Feb 2008 03:37 PM
Could you tell us which version of Stylus Studio you are using?
Postnext
Karen PowellSubject: Java Heap error and -Xmx param
Author: Karen Powell
Date: 07 Feb 2008 04:16 AM
Sorry, that detail would help I guess!

We're using Stylus Studio Enterprise Suite 2007
Postnext
Tony LavinioSubject: Java Heap error and -Xmx param
Author: Tony Lavinio
Date: 15 Feb 2008 06:07 PM
Your message doesn't say which processor you are using. Assuming
DataDirect XQuery, each successive version of Stylus Studio has
included great improvements in handling of large data.

Could you tell us which release of Stylus Studio you are using?
Go to Help|About, and there should be a build number followed by
a letter.

As an aside, -Xmx4096m is 4 gigabytes. I'm not sure how the JVM
will handle that, since 4 gigs is more RAM than Windows will let
a process see. -Xmx1500m is probably the highest, and that would
assume probably >2 gigs of RAM in the computer at least.
Posttop
Karen PowellSubject: Java Heap error and -Xmx param
Author: Karen Powell
Date: 21 Feb 2008 06:44 AM
We are using the Saxon 8.9.0.3 processor and have stylus Studio build 894m
   
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