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The description shown below is the top answer as voted by the Spotlight community.

The charts are based on 2.1 TB of data collected from 4207 instances uploaded by 323 Spotlight users over an 8 week period.

LCK_M_BU_LOW_PRIORITY

Category: Lock
SQL Server versions: 2014, 2016, 2017

What is LCK_M_BU_LOW_PRIORITY?

1 Answer

 

Occurs when a task is waiting to acquire a Bulk Update (BU) lock with Low Priority. (Related to the low priority wait option of ALTER TABLE and ALTER INDEX.) Information from Microsoft®

Never

This wait has never occurred recently

LCK_M_BU_LOW_PRIORITY has not occurred recently on 4207 instances checked.

Prevalence of LCK_M_BU_LOW_PRIORITY across the Spotlight Population