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: 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017


1 Answer


Occurs when waiting for an exclusive mode latch on a marked transaction. Transaction mark latches are used for synchronization of commits with marked transactions. Information from Microsoft®


This wait has never occurred recently

TRAN_MARKLATCH_EX has not occurred recently on 4207 instances checked.

Prevalence of TRAN_MARKLATCH_EX across the Spotlight Population