IBM Support

Java Heap Space Error When Running Report with a Chart

Troubleshooting


Problem

Running a chart report that has hundreds or thousands of data points may result in the following error CGSErrorAssert:0:Fatal: Error: Java heap space

Symptom

Error in Cognos Viewer is:

CGSErrorAssert:0:Fatal: Error: Java heap space : null at org.dom4j.DocumentFactory(DocumentFactory.java:178) at org.dom4j.tree.AbstractElement(AbstractElement.java:899) at org.dom4j.io.SAXContentHandler(SAXContentHandler.java:299) at org.apache.xerces.parsers.AbstractSAXParser(null:-1) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl(null:-1) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher(null:-1) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl(null:-1) at org.apache.xerces.parsers.XML11Configuration(null:-1) at org.apache.xerces.parsers.XML11Configuration(null:-1) at org.apache.xerces.parsers.XMLParser(null:-1) at org.apache.xerces.parsers.AbstractSAXParser(null:-1) at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser(null:-1) at org.dom4j.io.SAXReader(SAXReader.java:465) at org.dom4j.DocumentHelper(DocumentHelper.java:278) at com.ibm.cgsBus.FrameWork.CGSCanvas(null:-1) at com.ibm.cgsBus.FrameWork.CGSCanvas(null:-1) at com.ibm.cgsBus.CGSRequestHelper(null:-1) at com.ibm.cgsBus.CGSServerNonAsyncRequest(null:-1) at com.ibm.cgsBus.CGSServerNonAsyncRequest(null:-1) at com.ibm.cgsBus.CGSServerNonAsyncRequest(null:-1) at com.ibm.cgsBus.CGSServerNonAsyncRequest(null:-1) at java.util.concurrent.ThreadPoolExecutor$Worker(ThreadPoolExecutor.java:908) at java.util.concurrent.ThreadPoolExecutor$Worker(ThreadPoolExecutor.java:931) at java.lang.Thread(Thread.java:738) RSV-SRV-0042 Trace back:RSReportService.cpp(766): CGSErrorAssert: CCL_CAUGHT: RSReportService::process()RSReportServiceMethod.cpp(263): CGSErrorAssert: CCL_RETHROW: RSReportServiceMethod::process(): asynchWait_RequestRSASyncExecutionThread.cpp(828): CGSErrorAssert: RSASyncExecutionThread::checkExceptionRSASyncExecutionThread.cpp(277): CGSErrorAssert: CCL_CAUGHT: RSASyncExecutionThread::runImpl(): asynchRun_RequestRSASyncExecutionThread.cpp(884): CGSErrorAssert: CCL_RETHROW: RSASyncExecutionThread::processCommand(): asynchRun_RequestExecution/RSRenderExecution.cpp(670): CGSErrorAssert: CCL_RETHROW: RSRenderExecution::executeExecution/RSRenderExecution.cpp(1187): CGSErrorAssert: CCL_RETHROW: RSRenderExecution::processActiveDocumentsFrameWork/CGSCanvas.cpp(629): CGSErrorAssert: CCL_THROW:

[{"Product":{"code":"SSEP7J","label":"Cognos Business Intelligence"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Report Studio","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"10.2.1;10.2.1.1;10.2.2","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}},{"Product":{"code":"SS6G84","label":"IBM Cognos Analytics on Cloud"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}}]

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Document Information

Modified date:
08 May 2025

UID

swg21695636

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