xmlExportResultWrapper.getFileResult() JAVA HEAP SPACE

Hello,

var xmlExportOptionsWrapper = xmlExport.createDefaultXMLExportRootOptions(db.RootGroup(), [1033]);

xmlExportOptionsWrapper.set......

var xmlExportResultWrapper = xmlExport.startExport(xmlExportOptionsWrapper);

 

xmlExportResultWrapper.getFileResult(); -> java heap space !!!

tried : LocalServer/config/dli.cfg :

db.jvm.params=-Xmx2048m -Dderby.system.durability\=test -Dderby.storage.pageReservedSpace\=0

Any idea ???