IBM Tivoli Composite Application Manager for Application Diagnostics, Version 7.1.0.1
NullPointerExceptions
The following content provides information about NullPointerExceptions.
NullPointerException after running for some time
The problem: The following error message "java.lang.NullPointerException" is displayed in the WebSphere SystemOut.log file after running the IBM Tivoli Composite Application Manager for WebSphere for some time:
java.lang.NullPointerException at java.util.Hashtable$1.contains(Hashtable.java:404) at java.util.AbstractCollection.containsAll(AbstractCollection.java:300) at java.util.Collections$SynchronizedCollection.containsAll (Collections.java:1603) at com.ibm.tivoli.itcam.tema.mbeanserver.JMX12.propertiesMatch (JMX12.java:97) at com.ibm.tivoli.itcam.tema.mbeanserver.JMX12.apply(JMX12.java:42) at com.ibm.tivoli.itcam.tema.appmon.serverinfo.build. ObjectNameFilter.isNotificationEnabled(ObjectNameFilter.java:47)The solution: Update the IBM JDK SR8 to IBM JDK SR8a.
NullPointerExceptions from Oracle on the data collector in trace-dc-bcm.log
The problem: The WebSphere application server using an Oracle database running with the ITCAM data collector for fix pack 4 will experience NullPointerException from Oracle in the trace-dc-bcm.log. This is the type of exception that displays.
<Exception><![CDATA[java.lang.NullPointerException at oracle.jdbc.driver. OracleStatementWrapper.equals (OracleStatementWrapper.java:89)The solution: Set com.ibm.tivoli.itcam.toolkit.ai.createRememberedObjectField=true in the WebSphere application server JVM custom properties to avoid the exception.
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