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Home > Success Center > Log & Event Manager (LEM) > LEM - Knowledgebase Articles > LEM Memory Low - Millions of Alerts waiting

LEM Memory Low - Millions of Alerts waiting

Created by Craig O’ Neill, last modified by Mindy.Kerber on Oct 19, 2016

Views: 905 Votes: 0 Revisions: 3

Overview

In cmc → appliance → diskusage you see Millions of Alerts waiting in Memory

Symptoms of a Memory leak in LEM

Agents not reporting to LEM

Environment

  • LEM 6.1

 

Cause 

The addition of the isThreat field in the 6.2.0 agents are making the events incompatible with the 6.1.0 manager.

 

Results in the following exception

 

java.lang.ArrayIndexOutOfBoundsException: 10
at com.solarwinds.lem.database.lucius.LuciusDataWriter.writeBufferToLucius(LuciusDataWriter.java:609) [lem_lucius.jar:6.1.0.448.474828]
at com.solarwinds.lem.database.lucius.LuciusDataWriter.writeBufferToLucius(LuciusDataWriter.java:298) [lem_lucius.jar:6.1.0.448.474828]
at com.solarwinds.lem.database.lucius.LuciusAlertStorage.postBufferData(LuciusAlertStorage.java:76) [lem_lucius.jar:6.1.0.448.474828]
at com.solarwinds.lem.database.lucius.LuciusAlertStorage.postBufferData(LuciusAlertStorage.java:67) [lem_lucius.jar:6.1.0.448.474828]
at com.trigeo.core.EventToDB.postBufferToDatabase(EventToDB.java:1249) [lem_manager.jar:6.1.0.448.474828]
at com.trigeo.core.EventToDB.postBufferAlerts(EventToDB.java:1069) [lem_manager.jar:6.1.0.448.474828]
at com.trigeo.core.EventToDB.access$1300(EventToDB.java:56) [lem_manager.jar:6.1.0.448.474828]
at com.trigeo.core.EventToDB$AlertBufferReader.readSingleBuffer(EventToDB.java:347) [lem_manager.jar:6.1.0.448.474828]
at com.trigeo.core.EventToDB$AlertBufferReader.call(EventToDB.java:243) [lem_manager.jar:6.1.0.448.474828]
at com.trigeo.core.EventToDB$AlertBufferReader.call(EventToDB.java:217) [lem_manager.jar:6.1.0.448.474828]
at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.7.0_67]
at java.lang.Thread.run(Unknown Source) [na:1.7.0_67]
(Wed Sep 09 19:57:36 PDT 2015) EE:ERR [LuciusDataWriter]

{BBS:DequeueToDB-1:18}

EXCEPTION: {}

 

Resolution

  1. Ensure that the Windows Agent is not Newer than version 6.1
  2. Uninstall the 6.2 Agent(s) and install the correct agent i.e. version 6.1

 

 

 

 

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