Forum Replies Created

Viewing 15 posts - 4,531 through 4,545 (of 5,841 total)

  • RE: Disk subsystem configuration for Tempdb

    Fraggle-805517 (9/23/2009)


    Something I haven't seen anyone discuss is do you need to put each of these on a separate drive or do you still get the performance increase if you...

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

  • RE: The Dynamic Tally or Numbers Table

    WayneS (9/23/2009)


    Jeff Moden (9/22/2009)


    Keep in mind that the display is the "great equalizer"... you cannot judge real performance when returning result sets to the screen.

    Jeff - excellent advice. My question...

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

  • RE: The Dynamic Tally or Numbers Table

    RBarryYoung (9/23/2009)


    Great article, Lynn! I might finally be ready to stop cross-joining master..syscolumns. 🙂

    That's just SICK!! Blasphemy I tell you!!! 😀

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

  • RE: The Dynamic Tally or Numbers Table

    Pretty impressive Marco!! I thought though that Jeff had said 10 was the sweet spot for the number of values. Looks like you are using 16? Course...

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

  • RE: The Dynamic Tally or Numbers Table

    Gotta love this stuff!! Nicely done Lynn and follow-on posters too. Very self-aware of you Lynn to acknowledge that you lost sight of the big picture and forgot...

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

  • RE: Disk subsystem configuration for Tempdb

    Sorry, but you have not given us enough information to advise you. How many spindles underly the proposed tempdb drive? Are these spindles shared for any other IO...

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

  • RE: RAID configurations

    1) can't a RAID50 have half + 1 drives fail??

    2) make sure you do things like sector alignment and 64K cluster size formatting.

    3) I believe RAID 50 can be significantly...

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

  • RE: Assessing performance issue

    1) get a professional tuner to help/mentor you and your system. You have admitted to spending weeks on this. A competent tuner could have given you a slew...

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

  • RE: Will The SQL Server Optimizer Use More Than One Index For a Search?

    1) I believe you can actually force 2 indexes with the INDEX ( index_val [ ,...n ] ) table hint. Then you can see what the query plan is...

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

  • RE: Query running slow when concurrent users increases

    1) maybe it is slow because there are a kajillion joins? 🙂 This can lead to a) excessive IO (ESPECIALLY if indexes aren't available/used) and b) blocking. ...

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

  • RE: Query running slow when executed with parameters

    >> "apples to cannonballs"

    I like that one! 🙂 Curious why the OP would even imply these are equivalent...

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

  • RE: mdf Shrink fails - have tried everything possible..

    How, exactly, are you doing the shrink? Are you using the gui or the tsql directly?

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

  • RE: Database autgrows several hundreds of times when not needed

    1) the log shrink was a bad recommendation

    2) 50mb growth is too low

    3) you mentioned no jobs were running. how did you verify this? did you run sp_who2...

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

  • RE: Trace Profiler GUI

    In general you should not run the GUI profiler continuously. a) it has a MUCH more significant overhead on the server than profiling to a local disk file and...

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

  • RE: SELECT * versus SELECT 1 when using EXISTS

    I would like to inject here that people need to be very careful about the "test it yourself" mantra. What is optimal for one set of circumstances could be...

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

Viewing 15 posts - 4,531 through 4,545 (of 5,841 total)