How Can I Use More Than One Processor For SQL-Server

Jan 1, 1999

I am having a powerfull Server (DELL - PowerEdge 6100/200) with 4 processors, 1 GB Ram, 6 Discs a 9 GB.

But the SQL-Server runs only on 1 processor. That means when I look at the Windows NT Task Manager it shows only 25 % used.

Can anybody give me a hint or and has anybody an idea how to modify the SQL-Server or the DELL-Server to use all 4 processors.

thank you Hubert

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SQL Server On 64 Bit Processor

Sep 20, 2005

Hi,
I would like know the information(hardware requirements and issues) regarding SQL server 2000/2005 implement in 64 bit processor.
Thanks,

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Nov 26, 2007



I am running a query on a SQL Server 2005 database and encounter the following error message


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There is a join between a table on the 2005 database and another on a 2000 database. I have run DBCC CHECKTABLE and found no errors on the two tables.

Anybody with ideas?

Thanks

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Aug 6, 1999

Good morning,

I've just updated my databases to V7.0 from 6.5. I am having some issues with CPU utilization after rebuilding the databases. I rebuilt the databases from scripts after modifying the scripts to deal with any SQL issues between the versions.

Symptoms:

When a bunch of stored procedures are executed the % Processor Time his 100% on a single processor system, the Processor Queue Length hits 13, the Batch Request/Sec starts at 20 and rises to 47 before dropping off, Context Switches go from 370/sec to about 833/sec before dropping off and there is an increase in page faulting.

My testing was done on a single processor but my real system is dual-300+ with 128Mb RAM. The database is only 40Mb and after running the index wizard there were no changes advised.

After reading a lot in help areas for MS and here I am not sure if this has to do with how SQL Server runs now (i.e. system configuration) or if it is a query issue with parallelism. I'm assuming query parallelism since the performance spikes occur when stored procedures are run. On a single processor is there a way to address this. Then, hopefully, I can deal with the real multiprocessor system.

Thanks much,

Don

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Jul 20, 2004

If I install an instance of SQL Server on a box with 4 processors but specify in the licensing part of the installation procedure that it's a '2 processor license', does that really mean that SQL Server will only use 2 of the 4 processors? I ask because, having done this, if I check the SQL Server instance's properties, on the Processors tab, there are 4 processors ticked - giving the impression that 4 processors are being used by this SQL Server instance. Can anyone throw some light on this?

Another question... If I wish to reconfigure the same SQL Server instance from a 2 to a 4 processor 'per processor' license, how can this be done?

Clive

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Dec 12, 2007


Hi there

Every once in a while (every couple weeks or so) one of our SQL Server 2005 servers will have its performance take a dive. Response time on applications will slow way down. In checking €˜Task Manager€™ the CPU utilization will be up to 50 to 70 percent for the SQL server service. We have tried looking at €˜Perf Mon€™ there doesn€™t seem to be any consistent performance item that is out of whack. On occasion, it may appear to be a lot of paging going on, but I don€™t know what application is causing it. We€™ve looked at SP_who2 to see if there are any blocks, but there do not appear to be any. Though on occasion we will see a €˜Killed/roll-back€™ entry on €˜SP_who2€™ that has a lot of CPU cycles that, at least at one point in time, had a lot of counts against it.

In looking at a trace that we have set up, we don€™t see anything glaring that is held up or even a recurring theme (application) on the list that would point to a problem.

We find that by restarting the SQL Server service, this resolves the issue for another couple of weeks.

Is there something that I can look at that would tell me at least, what PC name is doing all of the IO against the database. I could then at least call the user and say €˜Hey, what are you doing€™ so that we can start to narrow down what is going on.

Any insight would be greatly appreciated. Thanks!

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Jul 5, 2007

Hello -



Regarding Standard vs Enterprise processor usage, I have read the SQL2K5 edition comparison articles that MS puts out, but I recently viewed a webcast that gave me cause for concern.



There was a webcast called "Selecting the Right SQL Server 2005 Edition", hosted by Michael Raheem, where he stated that although Standard edition allowed 4 processors (based on sockets, not cores) some index operations only leveraged one core at a time. So even if you have, let's say, 4 dual core CPUs (= 8 processor cores), only one core at a time will be used, and the rest will be idle during that operation.



Can anyone give a better idea of which operations are full multi-core in SQL Standard. Michael mentions indexing - does that mean strictly explicit reindexing operations which are part of a maintenance routine, or does that apply to index operations during normal inserts and/or updates?



We will be using this to run a backend for a commercial website, and we need to be sure whether we can get by with Standard or we need to make the investment in Enterprise.



Thanks

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Thanks for your comments,

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Sep 25, 2006

Hi,

We have recently tested upgrading our web service from sql 2000 to 2005 sp1. The upgrade went smoothly enough, however we now have the problem of the sqlserver.exe process taking 90-100 % of the processors time, but using only 100 MB of memory.

We have 6GB available and we are running the enterprise editions of Windows 2003 and SQL 2005.

Machine specs,

DL380 G2, 2 X 2.8 Ghz Zeon, 6GB ram, Raid 5, database partition of 140 GB, Log partition of 35 GB.

Db is 25 GB, Log is 12 GB. Largest table has 32 million rows.

Any help would be greatly appreciated.



Rob

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Mar 13, 2008



We are seeing that the %Processor Time for the sqlservr process in Perfmon is over 100%. I am trying to understand how can the percentage of use be over 100%, and why it is over 100%. Someone told me that if the machine has multiple processors, that it will be over 100%. If that is the case, how can I determine what the maximum and normal values are? If I have 4 processors, does that mean 400% is the max? Does not make sense since it is suppose to be a percentage value...


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SQL 2005 on Windows 2003 cluster.

Thanks!

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Hi all,

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An Error has occured while stablishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow Remote Connections . (provider : Named Pipes provider,error: 40 - Could not open a connection to SQL Server)


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Jan 4, 2008

Hi everybody,
I have a mirroring set up for around 30 databases in a 64 bit - 2 powerfull servers scenario - wih latest sp2 + hotfix. Mirroring works perfectly most of the times but when the principal is getting busy during the busy period of the day all of a sudden the processor on the mirror jumps to 100% and stays there for a long time - there are no live databases on the mirror server - all the databases are in mirrored mode. The principal server processor is less than 5% all the time. The network load between the principal and the mirror is also in normal limits. The principal server is dedicated to SQL but the mirror has other things too but the other processes use up maximum 15-20% of the CPU and when I stop SQL Server in one of those moments when the CPU jumps to 100% everything comes back to normal so it's clear that the issue is SQL on the mirror.
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I receive the following error:



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I have traced this to an insert statement that executes as part of a stored procedure.



INSERT INTO ledger (journal__id, account__id,account_recv_info__id,amount)

VALUES (@journal_id, @acct_id, @acct_recv_id, @amount)



There is also an auto-increment column called id. There are FK contraints on all of the columns ending in "__id". I have found that if I remove the contraint on account__id the procedure will execute without error. None of the other constraints seem to make a difference. Of course I don't want to remove this key because it is important to the database integrity and should not be causing problems, but apparently it confuses the optimizer.



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Regards,

Raju



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Hello all,

We've had a problem for a few months now that has completely stumped us. We are running a heavily cursored massive data manipulation process on a 32 bit SQL Server instance running on a virtual machine, running ontop of VMWare, with the following specs

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Memory: 8 GB
SAN w/ RAID 5 disk config

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The default configuration settings in all three places.

Has anyone ever seen any behavior like this, where only one processor gets used by SQL Server during processing? Granted our processes are single threaded b/c they are using cursors but, it seems that the single thread shouldn't be restricted to one processor.

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