Alert: SQL DB 2008 Engine Page Life Expectancy is too low
Management Pack Name: SQL Server 2008 (Monitoring)
Management Pack Version: 220.127.116.11
Rule or Monitor: Monitor
Rule or Monitor Name: Page Life Expectancy
Rule or Monitor Notes:
This monitor has a warning threshold of 900, and a critical threshold of 300. These settings are fine per http://blog.sqlauthority.com/2010/12/13/sql-server-what-is-page-life-expectancy-ple-counter/.
The alert auto resolves itself after a few minutes.
Issue: This is identified as a critical Alert in monitoring pane but it does not critically affect services.
Resolution: For our environment we changed the critical alert to a warning through creation of an override for all of these objects.