Regarding set implicit_transactions on

Posted on 2003-03-07
Medium Priority
Last Modified: 2008-02-26

Can anybody help me in understanding the advantages  and disadvantages
of setting the implicit_transactions on or off

Question by:schinni
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LVL 18

Accepted Solution

nigelrivett earned 200 total points
ID: 8088267
setting it on means that a transaction will be started but not committed for each update if there isn't one already so you will have to code either

update tbl set ...
commit tran

begin tran
update tbl set ...
commit tran

with it off you can code either

update tbl set ....

begin tran
update tbl set ...
commit tran

You can use @@trancount to see if a transaction has been started but not committed.
I would recommend to leave it off.

LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 8088268
There are not "advantages" or disadvantages as such. The difference is for your convenience or security.
-> Set it on mean that you need explicitely use commit to save the last statements to the database. This means you can rollback after you saw the flaw in your code (before issuing the commit)
-> Set it off means that each statement is automatically committed. this can be "dangereous" (see above)

Author Comment

ID: 8088337
Is there any strong reason why you recommend that

Author Comment

ID: 8089957
thanks very much

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