HADR_AR_MANAGER_MUTEX

Description

For databases utilizing Availability Groups. Used internally while SQL Server or Windows Failover Clustering is waiting for startup or replica shutdown to complete. This wait is uncommon, investigation is required if the values are excessive

Resolved by

DBAs

Suggested solutions

  1. Examine Windows Failover Clustering logs for any issues
  2. Check the SQL Server error log for more information
  3. Examine wait statistics on the instance for other Availability Group issues. Investigate accordingly

Additional research

AlwaysOn Availability Groups Troubleshooting and Monitoring Guide

See more

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