Occurs when a task is waiting to acquire a Schema Share lock. Information from Microsoft®
Waitopedia is a comprehensive resource of information about SQL Server waits.
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_SCH_S
Category: Lock
SQL Server versions: 2000, 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017
What is LCK_M_SCH_S?
1 Answer
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answered 3348 days ago
Spotlight Essentials
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This wait never occurs for most instances
For each of 4207 instances, we ranked LCK_M_SCH_S on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.
Prevalence of LCK_M_SCH_S across the Spotlight Population
For 85 % of hours with this wait, average wait time is less than 130 ms
For each instance, we found all the recent hours when it had a LCK_M_SCH_S wait. We found the average latency for each of those hours.
1580 instances contributed data to this chart