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Sql server back ground processes. Expand / Collapse
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Posted Tuesday, March 19, 2013 9:25 AM
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I want to know , when i am execute sql select query , what are processes will be running in background





Please
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Posted Tuesday, March 19, 2013 1:57 PM


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You mean other than the query executing and the retrival of data occurring? What is the root of your question? Can you be more specific?

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Post #1432889
Posted Wednesday, March 20, 2013 2:42 AM
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i want know, while i am executing select query , what are proceses running in background ?

Can you explain about that..

Post #1433064
Posted Wednesday, March 20, 2013 3:12 AM


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There are lots of processes running in the background all the time. Query sys.dm_exec_sessions and filter for is_user_process = 0. That'll show you all the background system processes.

They aren't specific to a query, they're always there, running in the background as SQL needs.



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Post #1433074
Posted Wednesday, March 20, 2013 3:25 AM
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OK.

But i want know, this way , thread and cost of query , lazy writer, memory . what are things involve in DML query.. Architure level in depth concept
Post #1433078
Posted Wednesday, March 20, 2013 5:38 AM


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there's far more information out there than we can provide in a simple forum post; forum posts are great for specific questions, but not so much for general research.

i guess you'll want to google a bit for something like "sql server statement processing steps" or "SQL Server processor internals"

the first hit for that i thought was relevant:
http://msdn.microsoft.com/en-us/library/ms190623(v=sql.105).aspx


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Post #1433142
Posted Wednesday, March 20, 2013 12:26 PM


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solomon.jernas (3/20/2013)
But i want know, this way , thread and cost of query , lazy writer, memory . what are things involve in DML query.. Architure level in depth concept


Cool.

Watch all of these:
http://www.sqlskills.com/T_MCMVideos.asp
Read all of this:
http://www.sqlskills.com/MCM.asp

It's several books worth, so you'll forgive me I hope for not explaining everything here.



Gail Shaw
Microsoft Certified Master: SQL Server 2008, MVP
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

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