SQL Server PLE | What is Page Life Expectancy ( PLE ) | What is PLE counter ? How to calculate PLE ?

Описание: SQL Server PLE | What is Page Life Expectancy ( PLE ) | What is PLE counter ? How to calculate PLE ?

Query :-

SELECT [object_name],
[counter_name],
[cntr_value] FROM sys.dm_os_performance_counters
WHERE [object_name] LIKE '%Manager%'
AND [counter_name] = 'Page life expectancy'
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