[xquery-talk] Saxon: Java heap space problem

Michael Kay mike at saxonica.com
Sat Jun 9 00:04:30 PDT 2007

This is a Java option, not a Saxon option. For the Sun JVM see
java -Xmx1024m net.sf.saxon.Query ....
Michael Kay


From: Sall, Kenneth B. [mailto:KENNETH.B.SALL at saic.com] 
Sent: 08 June 2007 22:47
To: Michael Kay; talk at x-query.com
Subject: RE: [xquery-talk] Saxon: Java heap space problem



Thanks but I don't see this option on
http://www.saxonica.com/documentation/using-xquery/commandline.html nor when
I do "java -help".

Is it available for Saxon 8.9J (free version)?


Ken Sall
SAIC > ASC > RDEC > Columbia
410-953-7016 (office)
410-300-2997 (mobile)


From: Michael Kay [mailto:mike at saxonica.com] 
Sent: Friday, June 08, 2007 5:28 PM
To: Sall, Kenneth B.; talk at x-query.com
Subject: RE: [xquery-talk] Saxon: Java heap space problem


How much heap space did you allocate?


My usual rule of thumb is 5x the raw document size, so this should run if
you allocate 1Gb (use the -Xmx option). That's an apporximation of course,
it's sometimes more, sometimes less.


Michael Kay




From: talk-bounces at x-query.com [mailto:talk-bounces at x-query.com] On Behalf
Of Sall, Kenneth B.
Sent: 08 June 2007 20:52
To: talk at x-query.com
Subject: [xquery-talk] Saxon: Java heap space problem



When attempting to process a 200 MB file with Saxon 8.9J (Java version
1.6.0_01), I run out of heap space. 


Building tree for file:/D:/PFA/PFA_200509302000_F.xml using class net.sf.sa


Exception in thread "main" java.lang.OutOfMemoryError: Java heap space


        at net.sf.saxon.tinytree.TinyTree.addNode(TinyTree.java:292)


Since I'm already using the default "tiny tree" model, and having closed
down other applications, short of adding more physical memory, is there
anything else I can do? If it matters, this large file is only 2 "lines":
the XML declaration and the rest of the file.


Is there anyway of getting a ballpark handle on the max size of file I can
process with Saxon (and Java) if my physical memory is say "N" MB?


Total Physical Mem = 2.048 GB

Available Physical Mem = 1.22 GB

Total Virtual Mem = 2.00 GB

Available Virtual Mem = 1.96 MB

Page File Space = 3.85 GB




Kenneth B. Sall

XML Data and Systems Analyst
Advanced Systems and Concepts
Science Applications International Corp. (SAIC)
7125 Columbia Gateway Dr., Suite 250
Columbia, MD  21046
410-953-7016 (office)

410-300-2997 (mobile)


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://x-query.com/pipermail/talk/attachments/20070608/20c8cf0f/attachment-0001.htm

More information about the talk mailing list