Managed resources are not being added to JBoss ON inventory due to fatal error occurred during merging of inventory report from agent

Issue

• Not all resources are discovered
• I can only see some services in inventory for some managed resource instances
• Services are missing from their parent inventory

• Server is unable to merge agent's inventory report and logs the following error:

  WARN  [org.hibernate.util.JDBCExceptionReporter] SQL Error: 0, SQLState: null
  ERROR [org.hibernate.util.JDBCExceptionReporter] Transaction is not active: tx=TransactionImple < ac, BasicAction: -2e68c4d0:fd6d:49c2f5d9:529447 status: ActionStatus.ABORTED >; - nested throwable: (javax.resource.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: -2e68c4d0:fd6d:49c2f5d9:529447 status: ActionStatus.ABORTED >)
  WARN  [com.arjuna.ats.arjuna.logging.arjLoggerI18N] [com.arjuna.ats.arjuna.coordinator.BasicAction_40] - Abort called on already aborted atomic action -2e68c4d0:fd6d:49c2f5d9:529447
  ERROR [org.rhq.enterprise.server.discovery.DiscoveryServerServiceImpl] Fatal error occurred during merging of inventory report from agent [Agent[id=0,name=my.jon.agent,address=null,port=0,remote-endpoint=null,last-availability-ping=null,last-availability-report=null]].
  java.lang.IllegalStateException: [com.arjuna.ats.internal.jta.transaction.arjunacore.inactive] [com.arjuna.ats.internal.jta.transaction.arjunacore.inactive] The transaction is not active!
      at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1379)
      at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:135)
      at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:87)
      at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:175)
      at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87)
      ...
      at $Proxy501.mergeInventoryReport(Unknown Source)
      at org.rhq.enterprise.server.discovery.DiscoveryServerServiceImpl.mergeInventoryReport(DiscoveryServerServiceImpl.java:75)
      at sun.reflect.GeneratedMethodAccessor266.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:597)
      at org.rhq.enterprise.communications.command.impl.remotepojo.server.RemotePojoInvocationCommandService.execute(RemotePojoInvocationCommandService.java:184)
      ...
      at $Proxy606.execute(Unknown Source)
      at org.rhq.enterprise.communications.command.server.CommandProcessor.handleIncomingInvocationRequest(CommandProcessor.java:290)
      at org.rhq.enterprise.communications.command.server.CommandProcessor.invoke(CommandProcessor.java:184)
      ...
  

• Server fails to merge an agent's inventory report due to a transaction timeout