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Conference abbott::visual_basic

Title:Microsoft Visual Basic
Moderator:TAMARA::DFEDOR::fedor
Created:Thu May 02 1991
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2565
Total number of notes:10453

2504.0. "1000 Vb clients against SQLserver in 2 tier mode" by SIOG::KEYES (Digital Appliation Gen. DTN 827-2705) Sat Feb 22 1997 11:13

    
    Have to ask this though I think its impossible.
    
    We are been asked if anybody knows a customer who have..wait for it..
    1000 VB (one thousand) clients hitting a SQLserver database in 2 tier mode.
    
    (I know the amount of concurrent users would be a  factor..I believe it
    would be high)
    
    I think it such a scenario you would need a TP monitor to handle this.
    
    Any comments
    
    rgs
    
    mick
                          
  Also posted in SQLserver conference     
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2504.1ELIS::TOWERSMon Feb 24 1997 04:1718
    Mick, you could try mailing John Walker (@RTO or @FKR) or John Whelan
    (UNTADE::WHELAN, not sure if he has an all-in-one). John Walker was my
    boss and John Whelan was his partner, when I worked on RCW. At the time
    the largest implementation had 50-100 VB clients talking to a SQLServer
    db. Since then RCW is supposed to have been implemented European-wide.
    If the UK has implemented it then I would imagine the number of VB4
    clients would be around your ballpark figure.
    
    Note that the main concern the users had was performance (big surprise
    there!) but that performance problems arose as much as anything from
    the amount of data being accessed (db was about 500 MB) as from the
    number of clients. Be sure to have the server stuff running on a big
    beefy Alpha with plenty of scope for upgrade of memory and number of
    processors. More memory (after you'd made sure the db structure is
    optimised) is the best/easiest way of improving performance.
    
    Cheers,
    Brian
2504.2InterestingSIOG::KEYESDigital Appliation Gen. DTN 827-2705Mon Feb 24 1997 05:1813
    HI There Brian,
    
    Interesting. I will certainly try and contact those folk. Performance
    was certainly the first issue that came to mind. hence we were leaning
    towards a more 3 tier scenario (Ole based) or with a TP monitor
    like Acmsxp on NT. I take your point though about a big focus on
    optimized design of the database..
    
    will drop a note back here if we get any luck or what is decided...
    
    rgs and thanks
    
    Mick