Microsoft Dynamics NAV Performance Counters

The following table describes the performance counters that are available in Microsoft Dynamics NAV for monitoring Microsoft Dynamics NAV Server instances.

Category	Counter	Description
Client, NAS, and Web Service sessions	# Active sessions	Number of active sessions on the Microsoft Dynamics NAV Server instance. An active session is a connection to the Microsoft Dynamics NAV Server instance from a Microsoft Dynamics NAV client, such as the Microsoft Dynamics NAV Windows client or Microsoft Dynamics NAV Web client, NAS, or Web services.
	Server operations/sec	Number of operations that have started on the Microsoft Dynamics NAV Server per second. An operation is a call to the Microsoft Dynamics NAV Server instance from a Microsoft Dynamics NAV client to run Microsoft Dynamics NAV objects. Note OData and SOAP requests are not included.
	Average server operation time (ms)	Average duration of server operations in milliseconds.
SQL Server connections	# Mounted tenants	Number of tenants that are mounted on the Microsoft Dynamics NAV Server instance. For more information about tenants, see Multitenant Deployment Architecture.
	# Open connections	Count of the current number of open connections from the Microsoft Dynamics NAV Server instance to Microsoft Dynamics NAV databases on SQL Servers.
	% Query repositioning rate	Percentage of queries that are re-executed when fetching the query result.
	Heartbeat time (ms)	The time that it takes to complete a single write to a system table. Every 30 seconds, the Microsoft Dynamics NAV Server instance writes a record to indicate that the instance is "alive." You can use this counter to indicate if there is network latency between the Microsoft Dynamics NAV Server and the SQL Server.
	# Preferred connection total requests	Count of the total number of requests to the preferred connection cache. The preferred connection cache contains requests from the SQL connection pool that was last used by a Microsoft Dynamics NAV user.
	% Preferred connection cache hit rate	Percentage of hits in the preferred connection cache, compared to the total number of requests.
Data and caching	# Calculated fields cache total requests	Count of the total number of requests to the calculated fields cache. The calculated fields cache contains the results of CALCFIELDS Function (RECORD) calls.
	% Calculated fields cache hit rate	Percentage of hits in the calculated fields cache, compared to the total requests to the calculated fields cache.
	# Command cache total requests	Count of the total number of requests to the command cache. The command cache contains the results of all SQL commands.
	% Command cache hit rate	Percentage of hits in the command cache, compared to the total requests to the command cache.
	# Primary key cache total requests	Count of the total number of requests to the primary key cache. The primary key cache contains the results of requests to get a record by using its primary key.
	% Primary key cache hit rate	Percentage of hits in the primary key cache, compared to the total requests to the primary key cache.
	# Result set cache total requests	Count of the total number of requests to the result set cache. The result set cache contains result sets that are returned from SQL Server.
	% Result set cache hit rate	Percentage of hits in the result set cache, compared to the total requests to the result set cache.
	# Rows in all temporary tables	Count of number of rows in all temporary tables.

See Also

Other Resources

How to: Set up Performance Counters in Windows Performance Monitor
How to: Use the Microsoft Dynamics NAV Data Collector Set Template
Optimizing SQL Server Performance with Microsoft Dynamics NAV
Microsoft Dynamics NAV Management Pack for System Center Operations Manager