Saxon

Hello,

I'm currently trying to migrate from Saxon 9.1.0.8 to 9.8.0.4 PE (evaluation licence for development and tryout) in my copmany java application and I have encountered memory problems.

First thing is that we are caching XQueryExpression objects for further reuse and had no memory problems with 9.1 version.

Simplified workflow: XQueryExpression exp = ...loadXquery(...) Configuration config = exp.getStaticContext().getConfiguration(); DynamicQueryContext dynamicContext = new DynamicQueryContext(config); ... NodeInfo xmlNode = (new DOMObjectModel()).unravel(new DOMSource(getXmlData(...)), config);

afterwards we set parameters and also load other documents using doc function but then we discard everything using Extensions.discardDocument

After heapdump anaIysis I think the root cause is that in TypeHierarchy map field we store SameNameTest object with reference to DOMNodeWrapper that stores a lot of data (based on retained heap size) and it's main difference in heapdump between version 9.1.0.8 and 9.8.0.4

Any pointers how to deal with that or what could be the real cause of memory issues are greatly appreciated.