2020-02-06 14:17:42.214 [entsession] INFO queuemessengerimpl.QueueReaderImpl - onBulkQueueMessage 2020-02-06 14:22:08.649 [ Thread-2] WARN queuemessengerimpl.DemartialPDSImpl - Error watching queue Java heap space 2020-02-06 14:22:08.650 [ calcEx-2] WARN impl.MetricRunnerImpl - Error watching internal queue Java heap space 2020-02-06 14:24:13.123 [entsession] INFO queuemessengerimpl.QueueReaderImpl - onBulkQueueMessage 2020-02-06 14:24:20.083 [entsession] ERROR nimbus.NimServerSession - Exception in NimServerSessionThread.
1) Increase java memory allocated to the baseline_engine probe 2) Upgrade to baseline_engine 9.02 HF3 .Contact support for this hotfix 3) Activate baseline_engine probe 4) Refresh queues / clear old alerts and check after a while and if any queuing seen.