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Description:
This wait type is when a Service Broker worker thread is waiting for a message to be received on a specific queue as part of an activation procedure.
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Added in SQL Server version:
2012
Removed in SQL Server version:
N/A
Extended Events wait_type value:
The map_key value in sys.dm_xe_map_values is 829 in 2012 and 848 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.
Other information:
The wait time for each wait incurred may be up to the timeout specified in the WAITFOR (RECEIVE) statement (or 60 seconds if no timeout is specified). This is a normal wait to see in any environment using Service Broker activation procedures.
Known occurrences in SQL Server (list number matches call stack list):
- Waiting for a message to be received on a specific Service Broker queue as part of an activation procedure
Abbreviated call stacks (list number matches known occurrences list):
- SOS_Task::PostWait+0x6f
WaitableBase::Wait+0x19c
SOS_RWLock::GetLongWait+0x221
CSsbWaitForGlobalManager::InternalTakeOffWaiterListAndNotifyNext+0x275
CSsbWaitForGlobalManager::TakeOffWaiterListAndNotifyNext+0x8a
CXStmtReceive::ExecuteWaitFor+0x172
CXStmtReceive::XretExecute+0x17c
CMsqlExecContext::ExecuteStmts<1,1>+0x7ed
CMsqlExecContext::FExecute+0xa6e
CSQLSource::Execute+0xa34
CSbActivationProcTask::Execute+0xdfe
CSbTask::TaskStart+0x136
CSbTask::BeginTaskStart+0x17
SOS_Task::Param::Execute+0x236
SOS_Scheduler::RunTask+0xad
SOS_Scheduler::ProcessTasks+0x3d0
SchedulerManager::WorkerEntryPoint+0x2a1
SystemThread::RunWorker+0x91