DB File Extension

  • I noticed that one database file does not have an extension and the type is just File. I have an M:\ partition and when I look at the database files one just has the name and no .mdf extension. The file type is File. There are other .mdf files in the same folder and they are listed with the extension and type is SQL Server Database Primary Data File.

    Also in the properties of the database under File Name it just shows the name and no extension.

    Please let me know what I should do to correct this. Not sure if just renaming the file ABSdatabase.mdf will work without the database being detached or something. If I do rename the file with the extension are there any risks

    Your help is appreciated

    Jeff

  • You can leave the extension off if you wish. I wouldn't recommend it but it does work.

    To rename it, detach perform the file rename and then reattach is what I would do.

    Jason...AKA CirqueDeSQLeil
    _______________________________________________
    I have given a name to my pain...MCM SQL Server, MVP
    SQL RNNR
    Posting Performance Based Questions - Gail Shaw[/url]
    Learn Extended Events

  • my preferred method would be the alter database command

    ALTER DATABASE yourdb

    (

    NAME = logicalfilename,

    FILENAME = N'c:\t1dat2.mdf' --for example

    );

    then offline the database, actually rename the physical file and online the database again.

    take a backup first whatever way you do it!

    (backup\restore with move is in fact another option)

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  • george sibbald (2/4/2013)


    my preferred method would be the alter database command

    ALTER DATABASE yourdb

    (

    NAME = logicalfilename,

    FILENAME = N'c:\t1dat2.mdf' --for example

    );

    then offline the database, actually rename the physical file and online the database again.

    take a backup first whatever way you do it!

    (backup\restore with move is in fact another option)

    If this is a SQL 2008 database server, I'd go that route too.

    Jason...AKA CirqueDeSQLeil
    _______________________________________________
    I have given a name to my pain...MCM SQL Server, MVP
    SQL RNNR
    Posting Performance Based Questions - Gail Shaw[/url]
    Learn Extended Events

  • works from 2005 up Jason.

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  • Yup. I always did the detach in 2005 after a bad experience. But yup - the syntax is supported in 2005. I don't recall the specifics of the bad experience.

    Jason...AKA CirqueDeSQLeil
    _______________________________________________
    I have given a name to my pain...MCM SQL Server, MVP
    SQL RNNR
    Posting Performance Based Questions - Gail Shaw[/url]
    Learn Extended Events

  • Thank you very much for the help.

    Jeff

    Jeff

  • jayoub1 (2/5/2013)


    Thank you very much for the help.

    Jeff

    You're welcome.

    Jason...AKA CirqueDeSQLeil
    _______________________________________________
    I have given a name to my pain...MCM SQL Server, MVP
    SQL RNNR
    Posting Performance Based Questions - Gail Shaw[/url]
    Learn Extended Events

  • ditto

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