SOS_Task::PostWait+90 EventInternal::Wait+1f9 LatchBase::Suspend+633 SQLServerLogMgr::GrowAFile+184 SQLServerLogMgr::ReserveAndAppend+292 XdesRMReadWrite::GenerateLogRec+615 XdesRMReadWrite::LogBeginXact+287 XdesRMReadWrite::MakeActive+b0 ...
SQL Server Books online defines the SQL wait type LATCH_EX as“Occurs when waiting for a EX (exclusive) latch. This does not include buffer latches or transaction mark latches. A breakdown of LATCH_* waits is available in sys.dm_os_latch_stats. Notice that sys.dm_os_latch_stats groups...
07/01/2015 14:45:24,spid67,未知,A time-out occurred while waiting for buffer latch -- type 2<c/>bp 00000000CAFE1880<c/>page 1:113858<c/>stat 0xc0010b<c/>database id: 10<c/>allocation unit Id: 72057594070827008<c/>task 0x00000000F380CBC8 : 0<c/>waittime 300<c/>flags 0x3a<c...
A latch is a lightweight synchronization mechanism that provides synchronization between threads trying to read or change a data structure in SQL Server. There are three types of latches: Latches on pages being read from disk (these are covered by thePAGEIOLATCH_XXwait types – see thePAGEIOLATC...
Added in SQL Server version: Pre-2005/2005 Removed in SQL Server version: N/A Extended Events wait_type value: Themap_keyvalue insys.dm_xe_map_valuesis 36 in all versions through 2014 RTM. After 2014 RTM, you must check the DMV to get the latest value as somemap_keyvalues have chang...