Any notes will be great. We have 600G SQL Server memory, but i guess too many things are running. Page Life Expectancy. Script to Monitor SQL Server Memory Usage Introduction: This post will takes you through the T-SQL Script to monitor SQL Server Memory Usage. All my posts this year have been about knee-jerk reactions to wait statistics, but in this post I'm deviating from that theme to talk about a particular bug bear of mine: the page life expectancy performance counter (which I'll call PLE). How to identify SQLs making Page Life Expectancy low. If I query the PLE with the follwowing query I get the value 46.000: SELECT [object_name], [counter_name], [cntr_value] FROM sys. How can I calculate the average "page life expectancy … The Performance Monitor tool allows you to capture and graph many aspects for the Windows server. A couple of weeks ago, I had an interesting discussion with one of my customer about the page life expectancy (aka PLE). If I query the PLE with the follwowing query I get the value 46.000: SELECT [object_name], [counter_name], [cntr_value] FROM sys. What is Page Life Expectancy (PLE) in SQL Server Posted on March 8, 2013 by Tim Radney Being a production DBA means having to quickly look at a SQL Server and diagnose issue with it. I am posting these scripts here in the spirit of sharing, as I'm sure there are other variations of these same scripts out there already. If you have multiple instances running on one server, the counters are available for each instance so you can see what is occurring at the instance level. For the last 3-4 years I have relied on the amount of memory being used by the data cache in SQL Server to determine when Page Life Expectancy was a sign of impending problems. I need to know how to extend the Page life for MS SQL Server 2012. Recommended action : This means I replaced the old 300 threshold with a more reasonable value of (DataCacheSizeInGB/4GB *300) as a basis for when to begin investigating things. PLE is a measure of, on average, how long (in seconds) will a page remain in memory without being accessed, after which point it is removed. This means I replaced the old 300 threshold with a more reasonable value of (DataCacheSizeInGB/4GB *300) as a basis for when to begin investigating things. He asked me if monitoring the metric value is a best practice because he often noticed a big drop of the PLE under the recommended threshold during … 99% of the time, corruptions are disk or disk driver/firmware related. This is a metric that … I can see it going from 30min to 90min at the day end. Alert: SQL DB Engine 2012 Page Life Expectancy is too low Source: MSSQLSERVER Path: SCOM-01.. Last modified by: System Last modified time: 9/17/2015 11:33:18 AM Alert description: Page Life Expectancy of SQL instance "MSSQLSERVER" on computer "SCOM-01.." is too low. Hello, I am getting 'Page life expectancy' value as '84156' from sys.dm_os_performance_counters views. We have 600G SQL Server memory, but i guess too many things are running. For this purpose of this blog… In previous blog post we have explained the parameters involved in understanding sql server memory usage. There are total 7 scripts to monitor SQL Server Memory Usage. There are counters for .NET, Disks, Memory, Processors, Network, etc... as well several counters related to each instance of SQL Server on the box. I'm attempting to configure a calculation to accurately represent a baseline value for Page Life Expectancy based on the amount of memory actually in the BufferCache. How to identify SQLs making Page Life Expectancy low. For the last 3-4 years I have relied on the amount of memory being used by the data cache in SQL Server to determine when Page Life Expectancy was a sign of impending problems. I want to calculate the page life expectancy of my SQL Server. I often use a multitude of T-SQL queries and scripts when I am troubleshooting memory issues and even for monitoring SQL Server Memory usage. Possible causes or transient low Page Life Expectancy (PLE) Index missing or corrupt Priority : High Missing indexes means SQL Server is suggesting that your query could run faster with an index. Hello, I am getting 'Page life expectancy' value as '84156' from sys.dm_os_performance_counters views. I can see it going from 30min to 90min at the day end. I want to calculate the page life expectancy of my SQL Server. When discussing memory performance in SQL Server, it is unlikely that we would go a few minutes before someone asks about page life expectancy (PLE for short). How can I calculate the average "page life expectancy …