<p>I have a data set that returns 70,000 rows. This is used in two tables with several grouping levels and some statistical calculations.</p>
<p>When I preview the report using the BIRT preview tab and the maximum number of rows set to 70,000, it renders flawlessly in about 30 seconds.</p>
<p>When I try to render it as a pdf or view it in an external viewer, I get errors and BIRT crashes.</p>
<p> </p>
<p>PDF error: file is corrupt</p>
<p> </p>
<p>Viewer error: HTTP ERROR: 500</p>
<p>Problem accessing /viewer/preview. Reason: Server Error</p>
<p> </p>
<p>I guess it is running out of memory whilst rendering the report. I believe the preview tab uses run_and_render in one process, whilst viewing the report as html or pdf first runs and then renders the report. I don't know if this could be the cause.</p>
<p> </p>
<p>Does anyone know what might cause this, and more importantly, what can resolve this :-).</p>
