Solved

Query timeout on SQL server suddenly appearing

Posted on 2011-09-08
6
483 Views
Last Modified: 2012-05-12
I have an installation with two Dbs which should be identical in structure on the same SQL Server running two different companies. One of these is significantly larger than the other.

On the smaller of the two timeout errers have started to appear on queries which return results instantly to the users of the  other Db which has about 4 times the number of rows in each table.

Something is wrong but I don't know where to begin. I have tried copying the query to a file and running the tuning advisor but it comes up with Error Unable to open input file on the Consuming Workload section.

Any ideas?
0
Comment
Question by:grwallace
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 7

Expert Comment

by:celazkon
ID: 36501687
Don't forget to create an index on the tables involved in the timing-out query. This will greatly enhance performance of the sql query
0
 

Accepted Solution

by:
grwallace earned 0 total points
ID: 36501728
An index already exists for the query - I a concerned that there is data corruption or something of that nature
0
 

Author Closing Comment

by:grwallace
ID: 36527877
No relevant answers
Grad C as nothing satisfactory
0
U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

 
LVL 40

Expert Comment

by:lcohan
ID: 36505682
indexes and statistics are not self maintained so sometimes you need to do a rebuild index and see SQL BOL for that or simply run:

update statistics table_name;
exec sp_recompile table_name;

to refresh stats and flush out of cache all old plans tied to the table_name.
0
 

Author Comment

by:grwallace
ID: 36506121
I had to raise a call to Microsoft to fix this one at a cost of £199. It is now solved with their help.The problem was due to due to a process locking out my query. Unfortunately there were no comments which were helpful of pointed me in that direction from Experts Exchange
0
 
LVL 40

Expert Comment

by:lcohan
ID: 36506196
that was costly and for the future keep in mind - SQL Activity Monitor and SP_WHO2  or SP_WHO stored proicedures can reveal that at no cost to you.
0

Featured Post

The Ultimate Checklist to Optimize Your Website

Websites are getting bigger and complicated by the day. Video, images, custom fonts are all great for showcasing your product/service. But the price to pay in terms of reduced page load times and ultimately, decreased sales, can lead to some difficult decisions about what to cut.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Hi all, It is important and often overlooked to understand “Database properties”. Often we see questions about "log files" or "where is the database" and one of the easiest ways to get general information about your database is to use “Database p…
In this article I will describe the Backup & Restore method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question