Attempt to write vertex but there is already such a record written

Document ID:  TEC1054289
Last Modified Date:  07/12/2017
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  • CA Application Performance Management


  • CA Application Performance Management:Release:10.5
  • CA Application Performance Management:Release:10.3
  • CA Application Performance Management:Release:10.1
  • CA Application Performance Management:Release:10.2
  • CA Application Performance Management:Release:10.0
  • CA Application Performance Management:Release:10.5.1
  • CA Application Performance Management:Release:10.5.2



Post upgrade from APM 9.7 to 10.5.1, I started seeing the following [WARN] message in the Manager of Manager (MOM)'s IntroscopeEnterpriseManager.log:

[WARN] [AppMapAsyncExecutor-4] [Manager.AppMap] Attempt to write vertex (externalId = INFERRED_SOCKET:SOCKET:abc-vip:1521:abc-vip) at 2017-05-22 17:40:56.091, but there is already such a record written at 2017-05-22 17:41:04.593

Application Performance Management 10.x

The warning message indicates that agents are trying to add data to the APM Team Center, but the data had already been written. This is usually due to a time zone conflict between the MOM, collectors and Agents.


To address this, please make sure that the MOM and all Collectors are using the same time source to synchronize with (NTP). Then, please perform the following change:

1. In file, please modify the following line:



2. Please make the changes on MOM and all Collectors.
3. Restart the cluster

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