idle-transact-sql.md

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@@IDLE (Transact-SQL)	@@IDLE (Transact-SQL)	markingmyname	maghan	09/18/2017	sql	t-sql	reference	@@IDLE_TSQL @@IDLE	time [SQL Server], idle ticks [SQL Server] @@IDLE function status information [SQL Server], idle time idle time [SQL Server]	TSQL

@@IDLE (Transact-SQL)

[!INCLUDE SQL Server Azure SQL Managed Instance]

Returns the time that [!INCLUDEssNoVersion] has been idle since it was last started. The result is in CPU time increments, or "ticks," and is cumulative for all CPUs, so it may exceed the actual elapsed time. Multiply by @@TIMETICKS to convert to microseconds.

Note

If the time returned in @@CPU_BUSY, or @@IO_BUSY exceeds approximately 49 days of cumulative CPU time, you receive an arithmetic overflow warning. In that case, the value of @@CPU_BUSY, @@IO_BUSY and @@IDLE variables are not accurate.

:::image type="icon" source="../../includes/media/topic-link-icon.svg" border="false"::: Transact-SQL syntax conventions

Syntax

@@IDLE  

Return Types

integer

Remarks

To display a report containing several [!INCLUDEssNoVersion] statistics, run sp_monitor.

Examples

The following example shows returning the number of milliseconds [!INCLUDEssNoVersion] was idle between the start time and the current time. To avoid arithmetic overflow when converting the value to microseconds, the example converts one of the values to the float data type.

SELECT @@IDLE * CAST(@@TIMETICKS AS float) AS 'Idle microseconds',  
   GETDATE() AS 'as of';  

[!INCLUDEssResult]

I  
Idle microseconds  as of                   
----------------- ----------------------  
8199934           12/5/2006 10:23:00 AM   

See Also

@@CPU_BUSY (Transact-SQL)
sp_monitor (Transact-SQL)
@@IO_BUSY (Transact-SQL)
System Statistical Functions (Transact-SQL)