Wait Type PREEMPTIVE_OS_WAITFORSINGLEOBJEC

The wait type PREEMPTIVE_OS_WAITFORSINGLEOBJEC is ranked #28 by Stedman Solutions and Database Health Monitor.

Wait statistics, in the context of SQL Server, refer to the amount of time that a query spends waiting to access data in the database. When a client application requests data from the database, the request is placed in a queue and the client application must wait for its turn to access the data. The time that the query spends waiting is called a "wait" and is tracked by SQL Server. This information can be used to identify potential performance bottlenecks and optimize the performance of the database. Wait statistics are commonly used by database administrators to diagnose and troubleshoot performance issues in SQL Server.


The PREEMPTIVE_OS_WAITFORSINGLEOBJECT wait type in SQL Server is a type of wait that occurs when a task is waiting for a synchronization object. In SQL Server, synchronization objects are used to coordinate access to shared resources and prevent race conditions. When a task is in the PREEMPTIVE_OS_WAITFORSINGLEOBJECT wait state, it is waiting for a synchronization object to be signaled before it can continue execution. This wait type is typically only seen when synchronization objects are being used in the database.

Applies to

Related Waits

PREEMPTIVE_COM_QUERYINTERFACE
PREEMPTIVE_FILESIZEGET
PREEMPTIVE_HADR_LEASE_MECHANISM
PREEMPTIVE_OLEDBOPS
PREEMPTIVE_OS_AUTHENTICATIONOPS
PREEMPTIVE_OS_AUTHORIZATIONOPS
PREEMPTIVE_OS_AUTHZGETINFORMATIO
PREEMPTIVE_OS_AUTHZINITIALIZECON
PREEMPTIVE_OS_AUTHZINITIALIZERES
PREEMPTIVE_OS_BACKUPREAD
PREEMPTIVE_OS_CLOSEHANDLE
PREEMPTIVE_OS_CLUSTEROPS
PREEMPTIVE_OS_CREATEFILE
PREEMPTIVE_OS_CRYPTACQUIRECONTEX
PREEMPTIVE_OS_CRYPTIMPORTKEY
PREEMPTIVE_OS_CRYPTOPS
PREEMPTIVE_OS_DELETEFILE
PREEMPTIVE_OS_DEVICEOPS
PREEMPTIVE_OS_DTCOPS
PREEMPTIVE_OS_ENCRYPTMESSAGE
PREEMPTIVE_OS_FILEOPS
PREEMPTIVE_OS_FLUSHFILEBUFFERS
PREEMPTIVE_OS_GENERICOPS
PREEMPTIVE_OS_GETCOMPRESSEDFILES
PREEMPTIVE_OS_GETDISKFREESPACE
PREEMPTIVE_OS_GETFILEATTRIBUTES
PREEMPTIVE_OS_GETFINALFILEPATHBY
PREEMPTIVE_OS_GETPROCADDRESS
PREEMPTIVE_OS_LIBRARYOPS
PREEMPTIVE_OS_LOADLIBRARY
PREEMPTIVE_OS_LOOKUPACCOUNTSID
PREEMPTIVE_OS_MOVEFILE
PREEMPTIVE_OS_NETVALIDATEPASSWOR
PREEMPTIVE_OS_PIPEOPS
PREEMPTIVE_OS_QUERYREGISTRY
PREEMPTIVE_OS_REPORTEVENT
PREEMPTIVE_OS_REVERTTOSELF
PREEMPTIVE_OS_SECURITYOPS
PREEMPTIVE_OS_SERVICEOPS
PREEMPTIVE_OS_SQLCLROPS
PREEMPTIVE_OS_WRITEFILEGATHER
PREEMPTIVE_XE_CALLBACKEXECUTE
PREEMPTIVE_XE_GETTARGETSTATE
PREEMPTIVE_XE_SESSIONCOMMIT
PREEMPTIVE_XE_TARGETFINALIZE
PREEMPTIVE_XE_TARGETINIT

See Also


All Wait Types