[AccessD] [dba-SQLServer] HELP, server completely unresponsive

Francisco Tapia fhtapia at gmail.com
Thu Sep 24 14:49:58 CDT 2009


correct.

-Francisco
http://sqlthis.blogspot.com | Tsql and More...


On Thu, Sep 24, 2009 at 12:45 PM, jwcolby <jwcolby at colbyconsulting.com>wrote:

> I assume that it is the server service that is assigned the three cores.
>  Thus if I open another
> instance of management studio it won't try to assign two or three more
> cores?
>
> John W. Colby
> www.ColbyConsulting.com
>
>
> Francisco Tapia wrote:
> > In the configuration ( properties) of the server you'll want to leave
> > at least on CPU for the os so in your quad setup allow for 3 CPUs for
> > SQL but one for the os or if you don't want to do this then you can
> > always use the query hint option of MAXDOP=3 so only while the query
> > runs you only tie up 3 CPUs and not all of them and this allows you to
> > still have a responsive server.
> >
> > Sent from my mobile
> >
> > On Sep 24, 2009, at 7:56 AM, jwcolby <jwcolby at colbyconsulting.com>
> > wrote:
> >
> >> I have a situation way outside my expertise.  Yea, yea, I know a lot
> >> of you would ask what is IN my
> >> expertise, we can discuss that another day.
> >>
> >> Anyway, I run two Windows 2003 X64 servers.  Quad core, 16 gigs ram,
> >> RAID6 arrays.  Reasonably
> >> powerful.  Mostly I run SQL Server on one and VMs on the other.  In
> >> BOTH CASES I have told the
> >> software, SQL Server for instance, to only use X gigs of RAM, to
> >> leave 2.5 gigs for the OS and other
> >> applications.
> >>
> >> And yet, SQL Server starts a long running process and the server
> >> becomes unresponsive.  In some
> >> instances for example, I can load a spreadsheet or whatever... but
> >> it takes forever to load.  Just
> >> clicking the start button I have to wait 30 seconds for the start
> >> menu to show.
> >>
> >> Like that.
> >>
> >> I have a query running which is updating a field in a medium size
> >> table - 8 million records or so.
> >> I tried to load another instance of SQL Server.  It loaded, but when
> >> I clicked on the databases icon
> >> to drop down and show me the databases it just put up expanding and
> >> locked up the entire system.
> >>
> >> I am at a loss to discover what is going on.  It APPEARS to be SQL
> >> Server, though there is nothing
> >> else I run that uses all the memory in this thing so how do I know
> >> it isn't just Windows 2003
> >> flaking out somehow?  I have run memtest-86 for an entire weekend
> >> without a single failure, so I
> >> don't think it is the physical memory.
> >>
> >> I have no clue how to troubleshoot this problem.
> >>
> >> As I write this, the server is completely locked up.  I cannot
> >> switch between tasks, the little task
> >> manager icon shows about 50% CPU usage but AFAICT that is just what
> >> was displayed when it locked up.
> >>
> >> In the end I have to do a hard reboot to regain control, and when I
> >> do that I corrupt whatever
> >> database was being worked on.  This is insane!
> >>
> >> HELP.
> >>
> >> --
> >> John W. Colby
> >> www.ColbyConsulting.com
> >> _______________________________________________
> >> dba-SQLServer mailing list
> >> dba-SQLServer at databaseadvisors.com
> >> http://databaseadvisors.com/mailman/listinfo/dba-sqlserver
> >> http://www.databaseadvisors.com
> >>
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