SQL Server, General Statistics object
Applies to: SQL Server
The SQLServer:General Statistics object in SQL Server provides counters to monitor general server-wide activity, such as the number of current connections and the number of users connecting and disconnecting per second from computers running an instance of SQL Server. This can be useful when you are working on large online transaction processing (OLTP) type systems where there are many clients connecting and disconnecting from an instance of SQL Server.
This table describes the SQL Server General Statistics counters.
|SQL Server General Statistics counters||Description|
|Active Temp Tables||Number of temporary tables/table variables in use.|
|Connection resets/sec||Total number of logins started from the connection pool.|
|Event Notifications Delayed Drop||Number of event notifications waiting to be dropped by a system thread.|
|HTTP Authenticated Requests||Number of authenticated HTTP requests started per second.|
|Logical Connections||Number of logical connections to the system.
The main purpose of logical connections is to service multiple active result sets (MARS) requests. For MARS requests, every time that an application makes a connection to SQL Server, there may be more than one logical connection that corresponds to a physical connection.
When MARS is not used, the ratio between physical and logical connections is 1:1. Therefore, every time that an application makes a connection to SQL Server, logical connections will increase by 1.
|Logins/sec||Total number of logins started per second. This does not include pooled connections.|
|Logouts/sec||Total number of logout operations started per second.|
|Mars Deadlocks||Number of MARS deadlocks detected.|
|Non-atomic yield rate||Number of non-atomic yields per second.|
|Processes blocked||Number of currently blocked processes.|
|SOAP Empty Requests||Number of empty SOAP requests started per second.|
|SOAP Method Invocations||Number of SOAP method invocations started per second.|
|SOAP Session Initiate Requests||Number of SOAP Session initiate requests started per second.|
|SOAP Session Terminate Requests||Number of SOAP Session terminate requests started per second.|
|SOAP SQL Requests||Number of SOAP SQL requests started per second.|
|SOAP WSDL Requests||Number of SOAP Web Service Description Language requests started per second.|
|SQL Trace IO Provider Lock Waits||Number of waits for the File IO Provider lock per second.|
|Temp Tables Creation Rate||Number of temporary tables/table variables created per second.|
|Temp Tables For Destruction||Number of temporary tables/table variables waiting to be destroyed by the cleanup system thread.|
|Tempdb recovery unit id||Number of duplicate tempdb recovery unit id generated.|
|Tempdb rowset id||Number of duplicate tempdb rowset id generated.|
|Trace Event Notifications Queue||Number of trace event notification instances waiting in the internal queue to be sent through Service Broker.|
|Transactions||Number of transaction enlistments (local, DTC, bound all combined).|
|User Connections||Counts the number of users currently connected to SQL Server.|
You begin to explore the query performance counters in this object using this T-SQL query on the sys.dm_os_performance_counters dynamic management view:
SELECT * FROM sys.dm_os_performance_counters WHERE object_name LIKE '%General Statistics%';