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: Other
SQL Server versions: 2012, 2014, 2016, 2017


1 Answer


An AlwaysOn drop availability group operation is waiting for the target availability group to go offline before destroying Windows Server Failover Clustering objects. Information from Microsoft®

Very rare

This wait never occurs for most instances

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

Prevalence of PWAIT_HADR_OFFLINE_COMPLETED across the Spotlight Population

For 67 % of hours with this wait, average wait time is around 2.8 ms

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

2 instances contributed data to this chart

Latency Distribution of PWAIT_HADR_OFFLINE_COMPLETED across the Spotlight Population