I doubt you will notice much difference in performance unless you are really
going through that code many times a second. While it is good to have code
that is optimized and doing as it should at some point you have to consider
if it is worth the effort. There are many arguments about code bloat but the
simple fact is that people time is expensive. The time spent in making the
change and testing the change may not produce results that justify the
effort.

At one time there may have been some selects and an update or insert within
the cftransaction block. The updates or inserts may have been removed and
the cftransaction was not noticed. It happens with code, I myself being
guilty more than once.

Ray Thompson
Tau Beta Pi (www.tbp.org) 
The Engineering Honor Society 
865-546-4578


-----Original Message-----
From: Pat Larrea [mailto:hiralal...@gmail.com] 
Sent: Wednesday, January 21, 2009 9:30 AM
To: sql
Subject: Re: cftransaction for SELECT statements

Thank you both,

Yes, my understanding was exactly what Ray kindly explained, but I saw some
comments about the use of isolation attribute and it made me unsure about
which is better, removing this tag or adding 'read_uncommitted' attribute to
this tag. From what I read in the page Rob put, SQL server put locks on the
resource whether or not I put cftransaction tag, therefore, to force the
query to read data without waiting for the drop of locks, it is recomended
to use <cftransaction isolation="read_uncommited"> always (of course when
the dirty read is acceptable). Anyway should be the time to compare the
performance of each case, with and without this tag.

Thanks again, but further information, if any, is still welcome.

Pat 



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