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Backup Oplog is Behind


The Backup oplog is behind alert occurs when the Ops Manager backup service has not received an oplog from the Backup Agent for at least an hour.

Common Triggers

This can be caused by the following conditions:

  • Backup Agent is down.
  • Backup Agent is overloaded.
  • Backup Agent can’t reach the replica set.
  • Backup Agent can’t reach or successfully send data to Ops Manager.
  • Backup Agent is continuously restarting.


Check the Backup Agent logs in Ops Manager and on the Backup Agent host to find out which of these occurred.


  • Backup oplog is behind alert condition