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.


Category: Latch
SQL Server versions: 2008, 2008 R2, 2012, 2014, 2016, 2017


1 Answer


Occurs when there is a wait on a lock that is used to ensure single initialization of audit related Extended Event targets. Information from Microsoft®

Very rare

This wait never occurs for most instances

For each of 4207 instances, we ranked AUDIT_ON_DEMAND_TARGET_LOCK on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.

Prevalence of AUDIT_ON_DEMAND_TARGET_LOCK across the Spotlight Population

For 50 % of hours with this wait, average wait time is less than 5.8 ms

For each instance, we found all the recent hours when it had a AUDIT_ON_DEMAND_TARGET_LOCK wait. We found the average latency for each of those hours.

2 instances contributed data to this chart

Latency Distribution of AUDIT_ON_DEMAND_TARGET_LOCK across the Spotlight Population