DLL_LOADING_MUTEX

Description

This uncommon wait type occurs while SQL Server is waiting for the XML parser DLL to be loaded into memory. The values of this wait should be low. If the values are high further investigation is required

Resolved by

DBAs

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

sys.dm_os_loaded_modules

See more

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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