This wait is used internally by SQL Server. It is generated when SQL Server cannot perform deadlock searches. This typically occurs when searches are blocked by queries run on sys.dm_os_waiting_tasks. This wait type is uncommon and low values are acceptable

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Suggested solutions

  1. Check monitoring software. Ensure it is not querying sys.dm_os_waiting_tasks too much
  2. Examine the SQL Server error log for more information

Additional research


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Consider using ApexSQL Monitor, a Windows and SQL Server monitoring tool able to track SQL Server wait types, including the individual query wait statistics

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