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1933204 - OutOfMemoryError due to Adapter Engine Performance Monitoring in PI

Symptom

  • Process Integration (PI) Java Server nodes are restarting due to OutOfMemoryError (OOM).
  • The following suspects are reported in the Eclipse Memory Analyzer tool (MAT).
    The thread com.sap.engine.core.thread.impl3.SingleThread @ 0x256caf9e8 Application [56] keeps local variables with total size <number of bytes (#%) bytes. The memory is accumulated in one instance of "java.lang.Object[]" loaded by "<system class loader>".
  • The stacktrace for this thread shows the following
    at java.util.Arrays.copyOf([Ljava/lang/Object;I)[Ljava/lang/Object; (Arrays.java:2734)
      at java.util.AbstractCollection.finishToArray([Ljava/lang/Object;Ljava/util/Iterator;)[Ljava/lang/Object; (AbstractCollection.java:198)
      at java.util.AbstractCollection.toArray()[Ljava/lang/Object; (AbstractCollection.java:126)
      at com.sap.aii.af.service.statistic.impl.XPIPerformanceStatisticAggregator.start()V (XPIPerformanceStatisticAggregator.java:120)
      at com.sap.aii.af.service.statistic.PerformanceMonitorManager.startAggregator()V (PerformanceMonitorManager.java:771)
      at com.sap.aii.af.service.statistic.ProfileScheduler.invoke()V (ProfileScheduler.java:317)
      at com.sap.aii.af.lib.scheduler.JobBroker$Worker.run()V (JobBroker.java:494)
      at com.sap.engine.core.thread.impl3.ActionObject.run()Ljava/lang/Object; (ActionObject.java:37)
      at java.security.AccessController.doPrivileged(Ljava/security/PrivilegedAction;Ljava/security/AccessControlContext;)Ljava/lang/Object; (Native Method)
      at com.sap.engine.core.thread.impl3.SingleThread.execute(Lcom/sap/engine/core/thread/ThreadContextImpl;)V (SingleThread.java:185)
      at com.sap.engine.core.thread.impl3.SingleThread.run()V (SingleThread.java:302)


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Environment

  • SAP NetWeaver 7.3
  • SAP enhancement package 1 for SAP NetWeaver 7.3

Product

SAP NetWeaver 7.3 ; SAP enhancement package 1 for SAP NetWeaver 7.3

Keywords

Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, XI, AEX, OOM, hprof, phd, NWA, Netweaver Administrator, com.sap.aii.af.service.statistic.PerformanceDataCache, AsyncPerformanceAPIEventProcessor , KBA , BC-XI-IS-WKB , Runtime Workbench / Monitoring , BC-NWA-XPI , Process Integration (PI) Monitoring , Problem

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