Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I set up Data Collection for simple and basic monitoring of instances of SQL Server 2008 R2 (/2012) (is simple, accessible for and with very nice colors for my boss :-)

But one of instances showing negative numbers in Query Statistic History report, doesn't matter if is connected from local host or from another PC

Please to see image

enter image description here

My question is: what happened (or if is a bug in SSMS)?

enter image description here

How can I (and if is possible) to test correctness of the displayed values,

share|improve this question
How long the instance that you are monitoring is up ? – Kin Dec 28 '13 at 3:40
@Kin > 1Month, but max for query history is 7days – mKorbel Dec 28 '13 at 6:54

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.