Heap space errors

[ejhellerattc]

I have some detailed reports that consist of a master with subreports and the subreports have, in turn, subreports. The master has page breaks between the subreports and some of the subreports may also have page breaks. My datasource is dynamically generated XML and the master report is dynamically generated and compiled to call one or more predefined subreports. I am attempting to determine why some of my reports are not paginating properly. In order to do this, I attempt to load the dynamically created JRXML into iReports (3.0.0 and 3.1.0), link the data to the XML file and display the report. In both applications, the display is aborted due heap space exceptions. Is there a mechanism to increase the default heap space for either of these?

Thanks,

Edward.