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Discuss content posted by Roy Ernest
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Row Level Versioning
44 posts, Page 5 of 5
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Row Level Versioning
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Geoff A
Geoff A
Posted Tuesday, January 31, 2012 10:45 AM
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Last Login: Monday, May 20, 2013 7:10 AM
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Thanks for article Roy.
i am considering turning on these features on an application we have at my current company, but had a question.
If i alter my database with;
ALTER DATABASE MyDatabase
SET ALLOW_SNAPSHOT_ISOLATION ON
ALTER DATABASE MyDatabase
SET READ_COMMITTED_SNAPSHOT ON
Do I need to alter all my existing stored procedures that make use of the
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
statement?
also, the hint with (NOLOCK), should those also be removed?
Thanks.
Post #1244597
Roy Ernest
Roy Ernest
Posted Tuesday, January 31, 2012 10:55 AM
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Yes, you will need to remove those hints that you have given. It will defeat the purpose.
-Roy
Post #1244609
rmizrahi
rmizrahi
Posted Thursday, May 31, 2012 1:31 PM
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I also got incorrect results. I could never get the other machine (or the local machine, for that matter) to show me the 2 once I had run transaction b.
Post #1309318
rmizrahi
rmizrahi
Posted Thursday, May 31, 2012 1:37 PM
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Huonglien Nguyen (3/6/2009)
I followed through the steps but eventhough after I executed "Commit tran a" the select * on dbo.test still showed me the old data: 1212121 and if I executed "Commit tran b" the select statement showed value 5. So I actually never saw the value 2 at all. Do you have any idea? Thanks.
I got the same results. The article seems very good and I have a much better understanding of SQL Server's row level versioning capabilities, but I got the same results here. Will continue reading for any insight into why this happens.
R
Post #1309325
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