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Isolation level in SQL server

Posted on 2016-10-13
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Last Modified: 2016-10-14
In SQL server default isolation level is readcommitted.
Which isolation level you will suggest to client to change from the readcommitted?
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Question by:Daniel Jones
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3 Comments
 
LVL 35

Expert Comment

by:ste5an
ID: 41841671
D'oh?

Without further information: There is no need to change that. Cause READ COMMITED is the default, cause it addresses and solves the usual concurrency issues.
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by:Vitor Montalvão
ID: 41841680
Which isolation level you will suggest to client to change from the readcommitted?
What are the requirements?
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Accepted Solution

by:
Pawan Kumar earned 2000 total points
ID: 41841699
So you need to first understand the isolation level and how it works. I shall give you a brief idea. It basically controls the locking and row versioning behavior of T-SQL statements issued by a user to the SQL Engine.

Below is the list of Isolation level available in SQL Server. Note each isolation level is used for a specific purpose.
 
READ UNCOMMITTED  
READ COMMITTED  
REPEATABLE READ  
SNAPSHOT  
SERIALIZABLE  

For SQL - READ COMMITTED is the default one.
For SSIS - SERIALIZABLE is the default one.

I suggest you read about these and based on your requirement decide. If you need help with a specific requirment, Pls explain the requirement.

If you want to change then use below command-

SET TRANSACTION ISOLATION LEVEL [name]

*- [name] you can choose from the above list.
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