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slow inserting into sql server

Posted on 2016-10-25
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Last Modified: 2016-11-13
Hi
I have a web app which has been working fine
however, the data importer has suddenly stopped/seldom inserting
its timing out on each insert

i installed sp_whoisactive and i see the following
whoisactive
the middle row is the console import app trying to do the insert of latest log data, but it looks like a locking issue
it appears the first row is the issue?
would you agree and what should i do about it?

Can I do the I sent without lock?
The first row is get a select so no idea why it's locking????
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Question by:websss
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Nakul Vachhrajani earned 1000 total points (awarded by participants)
ID: 41859782
Because you are inserting data, a lock is definitely required. The LCK_M_IX tells you that the system is waiting to get an Intent Exclusive lock on the system.

There are a couple of things to check for:
- Are your SELECT queries are running with TABLOCK (which should not be the case)
- Do you have well-defined clustered indexes on your table (if it's a heap, it is possible that the simplest of SELECT statements may need locks on the entire table)
- Do you use explicit, long-running transactions? Try to keep the explicit transactions as small as possible
- Check if there are any resource bottlenecks on the server (memory/CPU/disk)


I suspect that you will find long-running transactions and run-away queries (the session blocking your insert is a select, session #60 which has 2,500,000 reads! Can you look at the query and optimize it to reduce the reads?)
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by:Vitor Montalvão
Vitor Montalvão earned 1000 total points (awarded by participants)
ID: 41859928
Looks like your INSERT is being blocked by the SELECT statement.
We can't see all of the SQL commands so I'm guessing that SELECT is also querying the tblCommonTrackingData, right?
If possible post here both commands (SELECT and INSERT).
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by:Vitor Montalvão
ID: 41885222
Recommendation to close this question by accepting the above comments as solutions.
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