timeout period elapsed prior to completion.

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timeout period elapsed prior to completion.

SQL Galaxy

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Points: 29472
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July 3, 2014 at 1:07 am

#287562

Application Error during upload data into database,.
The timeout period elapsed prior to completion of the operation or the server is not responding.
The statement has been terminated.
Dev team asking to DBA it was issues on database and server side and resolve it.
I checked at DB level blocking and running process, it seems wokring well, Further where to be troubleshoot for resolve timeout problem?
have tried everything... checkin the locks.... blocking..
Thanks
ananda

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Grant Fritchey SSC Guru Points: 398679 More actions · Answer 1

If a process has timed out, you won't see blocking now. There may have been blocking during the process. Depending on how long things were running, I'd suggest taking a look at the system_health extended event session. You can see many long running queries and long held blocks stored there. It can help you understand what was happening.

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Sean Lange SSC Guru Points: 286573 More actions · Answer 2

It might not show up in long running queries either. This is a result of a query that ran longer than the timeout that was established in the connection. The default is 30 seconds but it can be set a lot shorter. I would start with the query or stored procedures that are executed from the application. Hopefully the dev team has logged this error so you have at least a general idea of where in the code this happened. Then evaluate those queries and see if there is something that needs some tuning. Also, check with the dev team about what the connection timeout is set at. If it is set to 10 seconds and this runs 11 seconds it will timeout.

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SQL Galaxy One Orange Chip Points: 29472 More actions · Answer 3

Yes, resolved that issues and CPU resource reduced upto 80%..

I am not changed default connection at instance side.

1. capture the query duration time at SQL profiler which are the query taking > 5 seconds (5000)

2. Executed those queries at SSMS with actual exec.plan and found the missing index details.

also helped me lot Mr.Jonathan Kehayias - Digging into the SQL Plan Cache: Finding Missing Indexes

Thanks

ananda