Page Life Expectancy

  • Page Life Expectancy of SQL instance "MSSQLSERVER" on computer "computername" is too low. See "alert context" tab for more details.

    How can I fix this issue?

  • That is a very vague question. There isn't a "one" type solution for this. Not sure where you got that warning message from, i would set up perfmon @15 secs sampling for peak business hours and see if PLE is really low. Old school standard was 30 , these RAM is much cheaper i typically get concerned if it gets less than 1800 ( 30 mins). If you feel PLE is low, you could add more RAM to give a lift, other way would be to identifying queries which are using up resources.

    How much is the RAM assigned to SQL instance ( this is probably the first question i should have asked 🙂 )

  • Firstly, there is no case where a single perfmon counter tells you what to do. See chapter 1 of https://www.red-gate.com/community/books/accidental-dba

    Sustained low page life expectancy suggests that you may have memory pressure, see chapter 4 of the book referenced above.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass
  • Thank you! There is 8GB of memory allocated to the server.

    sa

  • My laptop's got more than that...

    Seriously though, read the two chapters of the book that I recommended. Problems are not identified with a single counter value or setting.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass
  • More to Gail's point:

    Page Life Expectancy isn’t what you think…[/url]

    K. Brian Kelley
    @kbriankelley

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