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ROWLOCK


ROWLOCK

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ESAT ERKEC
ESAT ERKEC
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Isolation level setting comming from application only ı can edit triger that s why ı try to find a hint
GilaMonster
GilaMonster
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Right before the BEGIN TRANSACTION, put SET TRANSACTION ISOLATION LEVEL REPEATABLE READ, since you are writing the begin tran, you can write that too.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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ESAT ERKEC
ESAT ERKEC
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I think this the same think
REPEATABLE isolation level and row base locking
SELECT ID FROM TESTROWLOCK (HOLDLOCK,ROWLOCK)
GilaMonster
GilaMonster
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Leave out the hints, just set the isolation level before you start the transaction. There's no good reason to use hints over the explicit isolation level.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
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ESAT ERKEC
ESAT ERKEC
Mr or Mrs. 500
Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)

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it is trigger in that s why i set the hints application before update set isolation level read commited

Is it true to change isolation level in triger

UPDATE isolation level read commited
triger isolation level in repeatable read ?

and ı test it when ı used that hints in transaction nobody can update that rows and ı want it
GilaMonster
GilaMonster
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Sure you can change the isolation level in a trigger. The new isolation level takes effect from that point until it's set to something else. Isolation level specified by SET TRANSACTION ISOLATION LEVEL overrides whatever the app specified.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
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


ESAT ERKEC
ESAT ERKEC
Mr or Mrs. 500
Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)Mr or Mrs. 500 (580 reputation)

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Thanks much
TheSQLGuru
TheSQLGuru
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I note that some form of index on ID should probably be in place here to help both with concurrency and performance.

Best,
Kevin G. Boles
SQL Server Consultant
SQL MVP 2007-2012
TheSQLGuru on googles mail service
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