Applications Systems

DPA query is consuming very high resources on a monitored server

DPA query is consuming very high resources on a monitored server for long time. The execution of a command in an alert SQL Server Error Log Alert that calls the exec xp_readerrorlog procedure procedure stops responding and the usage of the CPU that is running the command increases to 100 percent.

First published date

11/9/2018 7:12 PM

Last published date

11/9/2018 7:12 PM

Overview

CPU usage on a monitored server is at 100% on a query called from DPA.
 

Environment 

  • DPA all versions 
  • Monitoring SQL Server prior to Cumulative update package 5 for SQL Server 2005 Service Pack 3 or a version prior to cumulative update package 7 for SQL Server 2008

Product section

Database Performance Analyzer

Cause

The execution of a command in an alert SQL Server Error Log Alert that calls exec xp_readerrorlog stops responding and the usage of the CPU that is running the command increases to 100 percent. This is a known Microsoft issue.

Resolution

Work around 

Delete this alert in all instances that are not patched for the issue. 

In DPA, go to Alerts > Manage alerts. Then delete the SQL Server Error Log Alert, or deselect the instances from this alert that have the issue. 

Resolution 

Apply the Microsoft hotfix located at: http://support.microsoft.com/kb/973524 (© 2018 Microsoft, available at https://support.microsoft.com, obtained on May 9, 2018)

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