Is it possible to set DEFAULT TRANSACTION ISOLATION for all connections in SQL Server?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP





.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty margin-bottom:0;







up vote
2
down vote

favorite












I want the default Transaction Isolation level to be SNAPSHOT.



How do I set this on a SQL Server 2016 database?






sql-server sql-server-2016 snapshot-isolation







share|improve this question



















  • 1




    There's not a server or database level setting for this, but sometimes it can be set via the app connection string.
    – sp_BlitzErik
    54 mins ago

















up vote
2
down vote

favorite












I want the default Transaction Isolation level to be SNAPSHOT.



How do I set this on a SQL Server 2016 database?






sql-server sql-server-2016 snapshot-isolation







share|improve this question



















  • 1




    There's not a server or database level setting for this, but sometimes it can be set via the app connection string.
    – sp_BlitzErik
    54 mins ago













up vote
2
down vote

favorite









up vote
2
down vote

favorite











I want the default Transaction Isolation level to be SNAPSHOT.



How do I set this on a SQL Server 2016 database?






sql-server sql-server-2016 snapshot-isolation







share|improve this question















I want the default Transaction Isolation level to be SNAPSHOT.



How do I set this on a SQL Server 2016 database?






sql-server sql-server-2016 snapshot-isolation




sql-server sql-server-2016 snapshot-isolation






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 52 mins ago









Paul White♦

47.9k14257407




47.9k14257407










asked 1 hour ago









Inquisitor Shm

1232




1232







  • 1




    There's not a server or database level setting for this, but sometimes it can be set via the app connection string.
    – sp_BlitzErik
    54 mins ago













  • 1




    There's not a server or database level setting for this, but sometimes it can be set via the app connection string.
    – sp_BlitzErik
    54 mins ago








1




1




There's not a server or database level setting for this, but sometimes it can be set via the app connection string.
– sp_BlitzErik
54 mins ago





There's not a server or database level setting for this, but sometimes it can be set via the app connection string.
– sp_BlitzErik
54 mins ago











1 Answer
1






active

oldest

votes

















up vote
5
down vote













It is not possible to configure Snapshot Isolation (SI) as the default isolation level.



To use SI, the database must be enabled for Snapshot Isolation:



ALTER DATABASE CURRENT
SET ALLOW_SNAPSHOT_ISOLATION ON;


Then each connection must explicitly request SI, using for example:



SET TRANSACTION ISOLATION LEVEL SNAPSHOT;


It is possible to set the default Read Committed isolation level to use row versioning (RCSI).



If Read Committed Snapshot Isolation (RCSI) is sufficient for your purposes, the setting is:



ALTER DATABASE CURRENT
SET READ_COMMITTED_SNAPSHOT ON;


Further reading:




  • Snapshot Isolation in SQL Server (documentation)


  • How to set the default transaction isolation level server wide? by Nacho Alonso Portillo





share|improve this answer






















    Your Answer








    StackExchange.ready(function()
    var channelOptions =
    tags: "".split(" "),
    id: "182"
    ;
    initTagRenderer("".split(" "), "".split(" "), channelOptions);

    StackExchange.using("externalEditor", function()
    // Have to fire editor after snippets, if snippets enabled
    if (StackExchange.settings.snippets.snippetsEnabled)
    StackExchange.using("snippets", function()
    createEditor();
    );

    else
    createEditor();

    );

    function createEditor()
    StackExchange.prepareEditor(
    heartbeatType: 'answer',
    convertImagesToLinks: false,
    noModals: true,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: null,
    bindNavPrevention: true,
    postfix: "",
    imageUploader:
    brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
    contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
    allowUrls: true
    ,
    onDemand: true,
    discardSelector: ".discard-answer"
    ,immediatelyShowMarkdownHelp:true
    );



    );













     

    draft saved


    draft discarded


















    StackExchange.ready(
    function ()
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdba.stackexchange.com%2fquestions%2f221548%2fis-it-possible-to-set-default-transaction-isolation-for-all-connections-in-sql-s%23new-answer', 'question_page');

    );

    Post as a guest

















    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    5
    down vote













    It is not possible to configure Snapshot Isolation (SI) as the default isolation level.



    To use SI, the database must be enabled for Snapshot Isolation:



    ALTER DATABASE CURRENT
    SET ALLOW_SNAPSHOT_ISOLATION ON;


    Then each connection must explicitly request SI, using for example:



    SET TRANSACTION ISOLATION LEVEL SNAPSHOT;


    It is possible to set the default Read Committed isolation level to use row versioning (RCSI).



    If Read Committed Snapshot Isolation (RCSI) is sufficient for your purposes, the setting is:



    ALTER DATABASE CURRENT
    SET READ_COMMITTED_SNAPSHOT ON;


    Further reading:




    • Snapshot Isolation in SQL Server (documentation)


    • How to set the default transaction isolation level server wide? by Nacho Alonso Portillo





    share|improve this answer


























      up vote
      5
      down vote













      It is not possible to configure Snapshot Isolation (SI) as the default isolation level.



      To use SI, the database must be enabled for Snapshot Isolation:



      ALTER DATABASE CURRENT
      SET ALLOW_SNAPSHOT_ISOLATION ON;


      Then each connection must explicitly request SI, using for example:



      SET TRANSACTION ISOLATION LEVEL SNAPSHOT;


      It is possible to set the default Read Committed isolation level to use row versioning (RCSI).



      If Read Committed Snapshot Isolation (RCSI) is sufficient for your purposes, the setting is:



      ALTER DATABASE CURRENT
      SET READ_COMMITTED_SNAPSHOT ON;


      Further reading:




      • Snapshot Isolation in SQL Server (documentation)


      • How to set the default transaction isolation level server wide? by Nacho Alonso Portillo





      share|improve this answer
























        up vote
        5
        down vote










        up vote
        5
        down vote









        It is not possible to configure Snapshot Isolation (SI) as the default isolation level.



        To use SI, the database must be enabled for Snapshot Isolation:



        ALTER DATABASE CURRENT
        SET ALLOW_SNAPSHOT_ISOLATION ON;


        Then each connection must explicitly request SI, using for example:



        SET TRANSACTION ISOLATION LEVEL SNAPSHOT;


        It is possible to set the default Read Committed isolation level to use row versioning (RCSI).



        If Read Committed Snapshot Isolation (RCSI) is sufficient for your purposes, the setting is:



        ALTER DATABASE CURRENT
        SET READ_COMMITTED_SNAPSHOT ON;


        Further reading:




        • Snapshot Isolation in SQL Server (documentation)


        • How to set the default transaction isolation level server wide? by Nacho Alonso Portillo





        share|improve this answer














        It is not possible to configure Snapshot Isolation (SI) as the default isolation level.



        To use SI, the database must be enabled for Snapshot Isolation:



        ALTER DATABASE CURRENT
        SET ALLOW_SNAPSHOT_ISOLATION ON;


        Then each connection must explicitly request SI, using for example:



        SET TRANSACTION ISOLATION LEVEL SNAPSHOT;


        It is possible to set the default Read Committed isolation level to use row versioning (RCSI).



        If Read Committed Snapshot Isolation (RCSI) is sufficient for your purposes, the setting is:



        ALTER DATABASE CURRENT
        SET READ_COMMITTED_SNAPSHOT ON;


        Further reading:




        • Snapshot Isolation in SQL Server (documentation)


        • How to set the default transaction isolation level server wide? by Nacho Alonso Portillo






        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited 41 mins ago

























        answered 52 mins ago









        Paul White♦

        47.9k14257407




        47.9k14257407



























             

            draft saved


            draft discarded















































             


            draft saved


            draft discarded














            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdba.stackexchange.com%2fquestions%2f221548%2fis-it-possible-to-set-default-transaction-isolation-for-all-connections-in-sql-s%23new-answer', 'question_page');

            );

            Post as a guest
































































            Comments

            Post a Comment

            Popular posts from this blog

            What does second last employer means? [closed]

            Image
            Clash Royale CLAN TAG #URR8PPP .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty margin-bottom:0; up vote -3 down vote favorite Say, for example I have worked in the following companies, Company A => 2010 - 2011 Company B => 2011 - 2012 Company C => 2012 - Till Date Company D => Have offer Now assume Company D is asking to submit documents from my second last employer. So from the list of companies given, which company would be qualified as second last employer? software-industry employer share | improve this question asked Aug 10 '14 at 5:16 Rajaprabhu Aravindasamy 559 1 6 13 closed as off-topic by Jim G., jmort253 ♦ Aug 11 '14 at 1:58 This question appears to be off-topic. The users who voted to close gave this specific reason: "Questions seeking advice on company-specific regulations, agreements, or policies should be directed to your manager or HR department. Questions that address...
            Read more

            Installing NextGIS Connect into QGIS 3?

            Image
            Clash Royale CLAN TAG #URR8PPP .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty margin-bottom:0; up vote 1 down vote favorite Just acquired free version of NEXTGIS and trying to install the plugin for QGIS. It tells me it was not designed for version 3 of QGIS. How do I set up the QGIS-NEXTGIS interface then? qgis qgis-plugins nextgis share | improve this question edited 3 hours ago PolyGeo ♦ 51.9k 17 77 233 asked 4 hours ago IanGS 16 4 New contributor IanGS is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct. add a comment  |  up vote 1 down vote favorite Just acquired free version of NEXTGIS and trying to install the plugin for QGIS. It tells me it was not designed for version 3 of QGIS. How do I set up the QGIS-NEXTGIS interface then? qgis qgis-plugin...
            Read more

            One-line joke

            A one-liner is a joke that is delivered in a single line. A good one-liner is said to be pithy - concise and meaningful. [1] Comedians and actors use this comedic method as part of their act, e.g. Jimmy Carr, Tommy Cooper, Rodney Dangerfield, Norm Macdonald, Ken Dodd, Stewart Francis, Zach Galifianakis, Mitch Hedberg, Anthony Jeselnik, Milton Jones, Shappi Khorsandi, Jay London, Mark Linn-Baker, Demetri Martin, Groucho Marx, Dan Mintz, Emo Philips, Tim Vine, Steven Wright and Henny Youngman and Arnold Schwarzenegger. [ citation needed ] Many fictional characters are also known to deliver one-liners, including James Bond, who usually includes pithy and laconic quips after disposing of a villain. [ citation needed ] Examples "A baby seal walks into a club." "A dyslexic man walks into a bra." (Anonymous) "There are three types of people, those who can count and those who can't." "Venison's dear, isn't it?" (Jimmy Carr) "An escala...
            Read more