This wait is currently not documented by Microsoft. It is predicted to occur when database mirrors are first configured and flow control comes into effect. This wait is rare and excessive values should be investigated

Resolved by


Suggested solutions

  1. Check the SQL Server error log for more information
  2. Check Windows Event Viewer for any suspicious events
  3. Examine other wait statistics on the instance. Investigate accordingly

Additional research

SQL Server, Database Mirroring Object

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