Compatibility Mode in SQL 2005

  • If you change the compatiablity modes  from 80 to 90 in SQL Server 2005 will it force a restart?

  • No. 

    Greg

    Greg

  • It may recompile the all the procedures the database in which you changed compatability....

     

    MohammedU
    Microsoft SQL Server MVP

  • You are updating the database Schema(s), so you will need a schema update lock.  This is another way of saying changing compatibility mode on a database can only be done when no other users are active on that database.

    Also, remember you can change from 8.0 to 9.0, but you cannot change from 9.0 to 8.0.

    There is no requirement to restart SQL Server just because you change compatibility mode on a database.  Nothing is gained by a restart that does not happen without a restart in this situation.

    Original author: https://github.com/SQL-FineBuild/Common/wiki/ 1-click install and best practice configuration of SQL Server 2019, 2017 2016, 2014, 2012, 2008 R2, 2008 and 2005.

    When I give food to the poor they call me a saint. When I ask why they are poor they call me a communist - Archbishop Hélder Câmara

  • Also, remember you can change from 8.0 to 9.0, but you cannot change from 9.0 to 8.0.

     

    Really... Our first SQL 2005 install I created three new dbs as V 9.0, the install of the app created the tables and then later it was determined that the software vendor certified SQL 2005 but ONLY if the dbs were in 8.0 compatibility level so I switched them to 8.0. It all seems to work ok.....

    Hum....

  • "Also, remember you can change from 8.0 to 9.0, but you cannot change from 9.0 to 8.0." add "if you have enabled any features new to SQL 2005" .... d'oh!

    Original author: https://github.com/SQL-FineBuild/Common/wiki/ 1-click install and best practice configuration of SQL Server 2019, 2017 2016, 2014, 2012, 2008 R2, 2008 and 2005.

    When I give food to the poor they call me a saint. When I ask why they are poor they call me a communist - Archbishop Hélder Câmara

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