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(Books Online description: “Waiting for responses to conversational messages (which require an explicit response from the other side, using the Always On conversational message infrastructure). A number of different message types use this wait type.”)
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Added in SQL Server version:
Removed in SQL Server version:
Extended Events wait_type value:
The map_key value in sys.dm_xe_map_values is 786 in 2012 and 804 in 2014 RTM. After 2014 RTM, you must check the DMV to get the latest value as some map_key values have changed in later builds.
Known occurrences in SQL Server (list number matches call stack list):
Abbreviated call stacks (list number matches known occurrences list):