SQL Server Running Slow On A High End System
Mar 7, 2004
I have about a 447 MB SQL server 2000 database on a desktop PC acting as a QA server. The hardware specs of the QA box are as follows:
CPU: P4 2.4 GHz
Memory: 1GB
Drives: 80 GB IDE
I recently purchased a Dell PowerEdge 2650 server to act as the staging box. The staging box has
CPU: P4 2.4 GHz
Memory: 2GB
Drives: 40GB SCSI, mirrored
I made a backup of the database on the QA box, and restored it on the staging box. Yet when I run something as simple as a select query (select * from <table>), the less powerful QA box is faster.
I figured maybe the statistics are different on the staging box. I ran dbcc showcontig to make sure the statistics were identical. Also ran RedGate's SQL compare and data compare to make sure everything was identical.
I figured maybe the query optimizer needs to be tweaked. I recreated the indexes and updated statistics on the staging box. The queries actually got slower as a result.
I thought maybe SCSI drives are slower. Tried breaking the mirror on the staging box. No luck. Put the mirror back in place, ran a test where I copied a large folder from one directory to another on the staging box. Repeated the same test with the same data on the QA box. The staging box was more than twice as fast than the QA box.
It doesnt appear to be a problem with the query, adjusting memory in SQL server has not effect, both boxes are using SQL server 2000 SP3, why is the bigger machine running queries hundreds of milliseconds slower than the smaller machine? Any help will be appreciated!
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Jun 1, 2007
we had some slow down complaints lately and this query seems to be the culprit almost every single time. The estimated execution plan is a clustered index seek as there is a clustered index on the uidcustomerid column. setting profile statistics on shows that every time it executes it does an index seek.
profiler session showed a huge number of reads for these queries depending on the value being looked up. 1500 through 50000. i set up profile io on and the culprit is lob logical reads. everything else is 0 or very low. in this case lob logical reads is over 1700.
3 of the columns in the select statement are text columns. when i take them out of the query the lob logical reads drops to 0 and goes up incrementally as i add each column back in.
is there anyway to improve the performance without changing data types to varchar(max)?
select SID,Last_name,Name_2,First_name,Middle_initial,Descriptives,Telephone_number,mainline,Residence,ADL,
DID_number,Svce_street,Svce_town,Svce_state,Svce_appt,Mailing_street,Mailing_town,Mailing_state,Mailing_appt,
Mailing_zip,Listing,Addl_listing,Published,Listed,Gold_number,PIN,status,SSnumber,tax_jurisdiction,
Bill_date,Past_balance,Service_start_date,Service_end_date,LOA,FCC_type,Line_type,I_W,Jacks,Voice_messaging,
vms_ring_cycles,CCS,phonesmarts,ringmate,voice_dialing,Bill_detail,Contact_Number,Contact_extension,
Best_Time,suspend,suspend_start,suspend_end,credits_allowed,credits_granted,home_region,Calling_Plan,Local_Plan,
Local_Plan_Rate,Flat_Rate,Sales_agent,Community,Building_Mgmt,How_Heard,Incentive_1,Incentive_1a,Incentive_1b,
Incentive_1c,Incentive_2,Incentive_2a,Incentive_2b,Incentive_2c,Incentive_3,Incentive_3a,Incentive_3b,
Incentive_3c,block_operator,block_collect,block_group,block_adult,block_call_return,block_repeat_dialing,
block_call_trace,block_caller_id,block_anonymous,block_all_high_toll,block_regional_and_ld,block_DA_Call_Completion,
block_DA,block_3rd_party,bank,prepayment,dial_around_number,custid,waive_interest,Financial_Treatment,
Other_Feature_1_code,Other_Feature_1_rate,Other_Feature_2_code,Other_Feature_2_rate,Other_Feature_3_code,
Other_Feature_3_rate,Other_Feature_4_code,Other_Feature_4_rate,Partial_Account,mail_date,snp_1_date,snp_2_date,
terminate_date,snp1notified,snp1peak,snp1offpeak,snp2notified,snp2peak,snp2offpeak,avg_days_paid,Pulled_Ld,SNP1,
SNP2,Treatment,Collections,Installment,Nynex_BTN,LD_rate,local_discount,to_month,rounds_up,full_package_made,
local_made,PIC,LPIC,tax_exempt_local,tax_exempt_federal,CommissionedAgent,LDRateID,UidCustomerId,
accVchLineClassUSOC,block_Inter_Reg_LD,block_international,block_DA_3rd_Collect,block_DH2,block_ISP_2,block_ISP_3,
block_ISP4_3_GBAS,block_ISP3_3_GBAS,block_collect_only,block_LD_Reg_DA,block_usage_based,block_ISP5_3_GBAS,
block_ISP5_2_GBAS,block_group_adult,csr_PIC,csr_LPIC,csr_SA,csr_exception,cutover_status,cutover_datetime,
OutsideAgent,prfVchAttributes,uidResellerID,Category,uidDealID
from profiles where UidCustomerID in (352199267)
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Jun 26, 2007
Hi,
I have a report in SQL Reporting Services 2005 which calls a stored proc and the report takes a very long time to run and sometimes returns zero records. But when i run the stored proc in query analyzer it takes about 4 seconds!!
I have checked the execution log on the RS using the below sql:
Code Snippet
use ReportServer
Select * from ExecutionLog with (nolock) order by TimeStart DESC
It shows that i have a large amount of time for the dataretrieval (601309ms, about 10mins) and does not return any records most likely because of a query timeout:
TimeDataRetrieval TimeProcessing TimeRendering Source Status ByteCount RowCount
601309 2227 3 1 rsSuccess 4916 0
The weird thing is that when i run it in query analyzer, i get about 400 records in 4 seconds !!
I dont understand what RS is doing to take up so much time like this to retrieve data.
The report is very simple - it basically returns the records straight out into a table.
The only thing I somewhat suspected was a parameter data type conflict between RS and SQL, specifically dates. I have a start and end date parameter in the report - i tried specifying this as date and string to see if it made any difference but it didn't.
Any help would be greatly appreciated.
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Feb 20, 2006
Hello sql and .net gurus :-)I have a problem with my website www.eventguide.it. It's completly developed under .NET 2 and SQL Server 2005 Express. My problem is the folowing:The server is a Intel 3Ghz HT processor with 1GB Ram. No other page on the running system is a CPU consuming site. We optimized the SQL statements, the code, the caching and many other parts of the website (pooling on SQL access), but the SQL Server uses about 50% to100% of the CPU and about 400MB RAM all the time. The whole site seems to be very, very slow. In fact there are many of SQL operations on every page request, but we cache a lot of them in different ways (page output caching, application caching). So I don't understand we have so much performance problems. Any suggestions for optimised code in general? I read nearly all of the MS .NET performance papers - but real world experience is the missing part :-) It is better to cast the values of a SQL reader like thisDim String1 as String = Ctype(DataReader.item(0), String)Dim Integer1 as Intger = Ctype(DataReader.item(1), Integer)or like thisDim String1 as String = DataReader.item(0)
Dim Integer1 as Intger = DataReader.item(1)Thanks a lot for your help!FOX
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May 2, 2001
Our server is running. There are no locks, and server has been rebooted but the problem is still there. This has been going on for some time now. I intend to restart the server. Does anybody have a quick solution, please help. Thanks for your assistance!!
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May 17, 2001
Please what do I look out for 6.5 if I want to troubleshoot for slow running.
Thanks.
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Jun 6, 2001
Hi,
When first time I start my sql server is running faster. After 10 to 15 days later, sql sever performance is very slow. After I restart SQL service, to become normal.
Thanks
Mohan
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Mar 2, 2004
Hi,
Our main production server has started running slow, it is a dual zeon thingy with plenty of ram so hardware is not an issue.
Basically a service connects to the database and executes a few stored procs, the only way I can get the system up to speed again is to recompile one of the SPs but that is only a temporary fix.
Anyone had a similar thing?
Can anyone give me help on performance tuning in SQL server 2000.
Thanks
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May 3, 2007
Hi all,
I am having a problem ,SQL server is running very slow.This is happening some days only.For example my stored procedure ususally runs less than 2 minutes, some days will take 13minutes.I dont understand the problem.All the stored procedure having the same problem.Sorry, I am not a DBA,basically a devloper.Daily morning we are taking the DB backup and indexes already applied.DB size 10461.06 MB,RAM 4GB,CPU usage is less than 50%,This is a Cinema Database,so lot of users are accessing at same time(Web,IVR,cinema ticket counters etc).We are using SQL reports.Because of the stored procedure running slow,can not view the reports.pls advice..
please help me..If you need some more information please ask ..
Thanks in advance.
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Jan 5, 2007
Hi
We have SQL Express running very slowly on Small Business Server. Does
anyone know if there is a conflict between the two? Or any ideas on how
to solve our problem?
(Autoclose is set to
false)
Thanks
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Nov 30, 2007
I hav the following problem. I have written an stored procedure in sql server 2000 as the following
CREATE PROCEDURE dbo.pa_rellena
@pFechaInicio datetime
AS
declare @pFechaFin datetime
declare @auxcod_cen char(10)
declare @importeEfectivo decimal(17,2)
declare @importeTarjetas1 decimal(17,2)
declare @importeTarjetas2 decimal(17,2)
declare @importeVales decimal(17,2)
declare @importeTalones decimal(17,2)
declare @importeGastos decimal(17,2)
select @pFechaFin=@pFechaInicio+1
--Borramos las tablas temporales si las hemos creado con anterioridad y no se han borrado
if object_id('tmpCentros') is not null
drop table tmpCentros
if object_id('tmpCentros2') is not null
drop table tmpCentros2
if object_id('tmpMaxCajas') is not null
drop table tmpMaxCajas
if object_id('tmpCajasCentro') is not null
drop table tmpCajasCentro
if object_id('tmpVales') is not null
drop table tmpVales
if object_id('tmpDiarioEfectivo') is not null
drop table tmpDiarioEfectivo
if object_id('tmpDiarioTalones') is not null
drop table tmpDiarioTalones
if object_id('tmpDiarioTarjetas') is not null
drop table tmpDiarioTarjetas
if object_id('tmpDiarioSegundaForma') is not null
drop table tmpDiarioSegundaForma
if object_id('tmpDiarioGastosTarjetas') is not null
drop table tmpDiarioGastosTarjetas
if object_id('temp1') is not null
drop table temp1
--Seleccionamos todos los centros de Salvador Bachiller
select * into tmpCentros2
from centros
where centros.tienda=1
order by cod_cen
--Seleccionamos el maximo de cajas por cada centro
select cod_cen, max(cod_caja) as cajas into tmpMaxCajas
from cierrecaja
where fecha>=@pFechaInicio and fecha<@pFechaFin
group by cod_cen
order by cod_cen
--Mezclamos los centros con el maximo de cajas
select c.cod_cen, c.Centro, c.Direccion, c.localidad, c.provincia, c.cpostal, c.telefono, m.cajas, operaciones, cajas_tot, tienda, franquicia into tmpCentros
from tmpCentros2 as c left outer join tmpMaxCajas as m on c.cod_cen=m.cod_cen
--Cajas por centro
select distinct cod_cen as cod_cen, cod_caja as cod_caja into tmpCajasCentro
from cierrecaja
where fecha>=@pFechaInicio and fecha<@pFechaFin
--Los vales de cada centro
select cod_cen,sum(importe) as imp1 into tmpVales
from vales where
fecha>=@pFechaInicio and fecha<@pFechaFin
group by cod_cen
--Efectivo de cada centro
select cod_cen,'01' as vendedor,'EFECTIVO' as descripcion, (sum(diario.TotEuro)-Sum(Diario.Imppa2)) as importe1,0 as exp1, (sum(Diario.TotEuro)-sum(Diario.imppa2)) as importe2 into tmpDiarioEfectivo
from diario
where fecha>=@pFechaInicio and fecha<@pFechaFin and cod_cen in (select cod_cen from tmpCentros) and cod_caja in (select cod_caja from tmpCajasCentro) and diario.cod_pago='01'
group by cod_cen
--Talones por centro
select centros.cod_cen,'02' as vendedor,'TALONES' as descripcion, sum(diario.TotEuro) as importe1,0 as exp1, sum(Diario.TotEuro) as importe2 into tmpDiarioTalones
from centros inner join diario on centros.cod_cen=diario.cod_cen
where fecha>=@pFechaInicio and fecha<@pFechaFin and diario.cod_cen in (select cod_cen from tmpCentros) and cod_caja in (select cod_caja from tmpCajasCentro) and diario.cod_pago='02'
group by centros.cod_cen
--Tarjetas por centro
select cod_cen,'03' as vendedor,'TARJETAS' as descripcion, sum(diario.TotEuro) as importe1,0 as exp1, sum(Diario.TotEuro*(FPago.Descuento/100)) as importe2, sum(Diario.TotEuro) - sum(Diario.TotEuro*(FPago.Descuento/100)) as importe3 into tmpDiarioTarjetas
from FPago left join Diario on fpago.Cod_pago=Diario.cod_pago
where fecha>=@pFechaInicio and fecha<@pFechaFin and cod_cen in (select cod_cen from tmpCentros) and cod_caja in (select cod_caja from tmpCajasCentro) and Fpago.Descuento<>0
group by cod_cen
--Segunda Froma de Pago
select cod_cen,'03' as vendedor,'TARJETAS' as descripcion,sum(diario.imppa2) as importe1 into tmpDiarioSegundaForma
from fpago left join Diario on Fpago.cod_pago=diario.cod_pa1
where fPago.cod_pago<>'99' and fecha>=@pfechaInicio and fecha<@pFechaFin and cod_cen in (select cod_cen from tmpCentros) and cod_caja in (select cod_caja from tmpCajasCentro) and Fpago.Descuento<>0
group by cod_cen
--Comisiones tarjetas de pago
select cod_cen,'10' as vendedor, 'GASTOS (-)' as descripcion, sum(Diario.imppa2*(fPago.Descuento/100)) as importe2 into tmpDiarioGastosTarjetas
from Fpago left join Diario on FPago.cod_pago= Diario.cod_pa1
where fPago.cod_pago<>'99' and fecha>=@pFechaInicio and fecha<@pFechaFin and cod_cen in (select cod_cen from tmpCentros) and cod_caja in (select cod_caja from tmpCajasCentro) and Fpago.Descuento<>0
group by cod_cen
/*
--Venta neta por centro
declare cursortemporal cursor for select cod_cen from TmpCentros2
open cursortemporal
delete detallecaja_aux
fetch next from cursortemporal into @auxcod_cen
while @@fetch_status=0
Begin
select @importeVales=imp1 from tmpVales where cod_cen=@auxcod_Cen
select @importeEfectivo=importe2 from tmpDiarioEfectivo where cod_cen=@auxcod_Cen
select @importeTalones=importe2 from tmpDiarioTalones where cod_cen=@auxcod_cen
select @importeTarjetas1=importe3 from tmpDiarioTarjetas where cod_cen=@auxcod_cen
select @importeTarjetas2=importe1 from tmpDiarioSegundaForma where cod_cen=@auxcod_cen
select @importeGastos=importe2 from tmpDiarioGastosTarjetas where cod_cen=@auxcod_cen
select @importeVales=isnull(@importeVales,0)
select @importeEfectivo=isnull(@importeEfectivo,0)
select @importeTalones=isnull(@importeTalones,0)
select @importeTarjetas1=isnull(@importeTarjetas1,0)
select @importeTarjetas2=isnull(@importeTarjetas2,0)
select @importeGastos=isnull(@importeGastos,0)
print @auxcod_cen
print @importeVales
print @importeEfectivo
print @importeTalones
print @importeTarjetas1
print @importeTarjetas2
print @importeGastos
insert into detallecaja_aux (cod_cen,importe1)
values(@auxcod_cen, @importeVales+@importeEfectivo+@ImporteTalones+@ImporteTarjetas1+@importeTarjetas2-@importeGastos)
fetch next from cursortemporal into @auxcod_cen
select @importeVales=0
select @importeEfectivo=0
select @importeTalones=0
select @importeTarjetas1=0
select @importeTarjetas2=0
select @importeGastos=0
end
close cursortemporal
*/
select * from detallecaja_aux
GO
When I try to run it from visual basic it slow down the sql server.
What can I do?
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Apr 18, 2008
Hi folks!!
I am new to installation of SQL Server 2005..I wanted to know while selecting Service Account Screen why Avoid running SQL Server Agent as the Local System account.????
T.I.A
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Jul 20, 2015
I am trying to understand an environment and provide a solution to Banking system so that they can enter user data (transactions) online and at the same time we can provide users online reporting as well. Using same sql server or server/hardware on other machine.
There are so many branches/customers/ATM machines accessing online data as well as updating their balances. I want to understand how can we provide online reporting. Through replication, transaction log backup, log shipping or what other solution is available. I need to understand this and provide a solution that is already implemented running/successfully. Need some proposals and their pros and cons. cost and maintenance are the constraints with the real time reporting on live system/database.
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Aug 8, 2000
I have a dts job set up to transfer 550,000 records from a dbf file into a sql server. If I just let it run, there is a 9-10 minute delay, then it starts. If I try to schedule a job, it fails completely. I looked up ways to get it to execute quicker, mainly going to the advanced tab of the transform arrow and making the inserts 1000 at a time, the table locked, turning constraints off. Any advice on how to speed it up or why the job is failing?
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Apr 27, 2002
Hi All
Last week, we upgraded to sql2000 from 6.5. Everything went on fine. we re-compiled all the procedures. When i try to run a procedure, its running for long time - more than 10 hours (in sql 6.5 it runs for 50 mins). do i need to set any procedure cache?.
Also, the server CPU usuage is constantly high - more than 80%. It was fine till last week.
Any suggestions?
Thanks in advance
Jaya
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Aug 30, 2006
i have written a SP, but it eventually runs slower. i have to run this SP 500 times.
do you know what is causing that?
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Jul 1, 2007
when i turn on my pc, it takes about 10 minutes from turning on to actually be able to use.
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Jul 18, 2006
Some users complain that there computers run slow around noon. later it is fine. Anybody can tell me what is the problem? We have entivirus software installed on. Also i am runing back up database on the server. Many thanks.
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Oct 13, 1999
Hi list,
I'm a long time lurker on this list and really enjoy the discussions, although I rarely get a chance to participate.
Here is my situation: We are importing chunks of data (500 records at a time) from a C++ interface. The records have to be transformed before inserting into the target table which I am doing using a stored proc which is working fine. The records are in memory in C++ and the programmer is looping through the records building inserts into a temp table through ADO (which my proc picks up). The server business object is using the connection.execute method which is inserting one record at a time. That part of the process is taking over 15 seconds for 500 records which is the bulk of the total time.
My question is: Using ADO is there a better way to insert these records into the temp table? I see mention of a recordset interface but my programmers are new to ADO and since I am the DBA and have never used ADO, I am not sure what to tell them.
Any insight would be greatly appreciated.
shawn
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Apr 14, 2004
I have linked three SQL Servers together, and have written a stored proc that has a cursor that joined three tables from one of the linked servers. When I pull the SQL out of the cursor definition and run it in a query window it runs fine, but when I run the stored proc that simply steps through the same select result set it is too slow for words. It also throws a warning about serial isolation levels. Is there any way I can fix this.
David
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May 13, 2004
Hi guys.
I have a DTS package ON SQL 2000 which transfer data from AS400 to SQL 2000 using an ODBC Client Access 5.1 (The DSN was configured by a sysdmin on the AS400 so it is configured properly).
When i execute the package manualy (by right click and "execute package") the package runns fine and ruterns data in no time (Eproximatly 30000 rows in 15 sec).
The problem starts when a job executes the same packagee!!!
When i start the job, the DTS package is running Very Very Slow!!!!
sometime it takes Hours to return a few rows! and it seems that it is stuck.
The SQLAgent is running as a NT Account with Administrator rights, and has full access to the AS400!! so the problem is not the Agent.
by monitoring the AS400, i have noticed that the job/DTS is retreaving the first fetch quickly , and then it is in a waiting status
i have tried everything and cant seem to get this problem fixed
Does anyone know what could be the problem?
I Need Help Quick!!!
Thank You
Gil
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Jan 30, 2008
Hello All,
I have two procedures being run one after the other.
when I run proc1 it runs for about 15 min.
Now the proc2 is dependent on proc1, when I run proc2 it runs for 45 min.
If I run both the proc's simultaneously through .net code it takes more than 1 hour. Can anyone of you tell me where would be the problem.
Thanks in Advance.
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Oct 23, 2007
Hi, when the following function is used within the where statement of a select statement it runs very slowly, anyone know why?
ALTER FUNCTION [dbo].[fn_GetLastDayOfLVPeriod] ( @pInputDate DATETIME )
RETURNS DATETIME
BEGIN
DECLARE @vLVDPeriod varchar(4)
DECLARE @vLVDYear varchar(4)
DECLARE @vOutputDate DATETIME
SELECT @vLVDPeriod = LVDPeriod
FROM dbo.tblMIDates
WHERE CONVERT(varchar(8), Date, 112) = CONVERT(varchar(8), @pInputDate, 112)
SELECT @vLVDyear = LVDYear
FROM dbo.tblMIDates
WHERE CONVERT(varchar(8), Date, 112) = CONVERT(varchar(8), @pInputDate, 112)
SELECT @vOutputDate = MIN(Date)
FROM dbo.tblMIDates
WHERE LVDPeriod = @vLVDPeriod
AND LVDYear = @vLVDyear
RETURN @vOutputDate
END
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Aug 24, 2007
hi
if suppose one query is running slow than what steps we can follow to optimize it...
this question is asked me in interview.
thanx
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May 8, 2008
I don't know what is wrong but the moment i open SSIS it run's too slow...
AND if i have 100 warnings it takes it's own time to even open the designer...
I am just getting frustated with this
If i open my browser it's slow n email slow...
Any help is appreciated..
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Dec 29, 2001
Hi,
I have SQLServer 6.5 SP5a update running on Windows NT 4.0 SP6
with 4 gig RAM and 4 processor.
Suddenly the SQL 6.5 jobs running on the production server started running very very slow. A job that suppose to run in 30 minutes are running like 2 hours and completing successfully.
(I suspect the after the Norton Anti virus automatic live update may be the reason but not the Second Vulnerability as mentioned by Microsoft Bulletin last week)
I check the SQLServer, ran the performance monitor, checked pagefiles, disk space, databases,memory, tempdb. Everything seems to be normal.
I rebooted the server, checked any other process making that slow. But no use.
Please help me out with this issue as this is a production and the CRM applications from the clients uses the database server.
Thanks in advance,
Anu
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Nov 9, 2004
All,
I have been tapped to help with fixing a reporting tool. We have a Sql Server database/crystal reports(10) setup. I havent had the chance to look at the tables in the DB yet, but I was told that aggregate tables were used. In my past experience with crystal reports, we used database views to feed crystal reports (in Oracle). I was thinking that I could somehow use views instead of tables and then try to re-index the base tables and compile satitics (if theres such a thing with Sql Server). I was also going to look into bottlenecking and locking (table locking as opposed to row or page locking for the lookup tables...to reduce overhead on the main tables) but, I'm not sure if it'll make a difference since this is just a demo server with no major traffic hitting it yet.
The question is, does anyone have any experience with crystal reports running slow with Sql Server, what should I look out for??
'Wale
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Apr 17, 2008
Hi all,
I'm having what you might call an optimisation issue - but I'm also not sure if my approach to this problem is right. I've spent the whole day trying various methods but none seem to be performing as admirably as I'd hoped.
Basically, here's the scenario:
1. Log files are being inserted into a SQL table via Log Parser 2.2.
2. I have a lookup table of ip address ranges to countries and other geographic data.
3. Once the log row has been inserted from Log Parser, I want to update the same log table with data from the lookup table.
The main problem seems to be the updating (the initial insert from Log Parser is lightning quick).
I initially wrote a trigger on AFTER INSERT on the log table that converted the actual user's IP address into IPNumber format using a simple algorithm, then pumped the IPNumber into a quick select query which retrieved the geolocation data. Then, in the same trigger, there was an update statement which basically said:
update dbo.Logs
set [Country] = @Country
where [IpNumber] = @IpNumber and [Country] = Null
Therein lies the problem. The update statement slows everything down to almost a standstill and also seems to obtain a lock on the table.
Critical factors:
1. The log table must remain readable.
2. The query must execute in seconds -- not over half hour :)
I've experimented with various combinations of indexing, so far to no avail.
Any suggestions would be very much appreciated.
Regards
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Jan 27, 2006
Hi friends
after working visual studio (on my report model project) few minutes it runs too slow. i mean clicking on entities ,attributes takes ages to finish. I opened task manager i see "devenv.exe" is taking more than 800,000 k !!
am using sql server 2005 standard edition.
have you seen similar problem.
Thanks for your help.
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Jan 9, 2008
We have a stored procedure which is running fine on a SQL server 2000 from Query Analyzer. However, when we try to execute the same stored procedure from ADO.NET in an executable, the execution is hung or takes extremely long. Does anyone have any ideas or suggestions about how it could happen and how to fix. thanks
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Apr 6, 2007
I support a website (ASP.NET 2.0) where recently users have been unable to insert data due to timeout issues. The functionality executes a query that inserts a single row into a SQL Server 2005 db table. I tried running this query from the backend, and it took 4:48 to insert a single row! Interestingly, after that initial agony any similar inserts I tried took no time whatsoever. I have checked the execution plan, but unfortunately don't really know what I'm looking for with inserts, as most of my experience with execution plans is with select statements. Any resources anyone could point me to for troubleshooting this would be much appreciated.
Thanks,
-Dave
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Aug 27, 2007
I have a SELECT TOP query in order to return x number of top records from a table which has the indexing service enabled on it, such as this :
SELECT TOP(15) * FROM [TableName] ORDER BY [ColumnName]
and also there are not that many records(MAX 100 rows) kept in the table at the moment however, it will grow later.
The issue stems out from the ORDER BY [ColumnName] part of the syntax that changes the TOP selection order which makes the query to run very slow as I have also analyzed in the SQL SERVER QUERY ANALYZER.
Anyhow, I need to have the ORDER BY statement to show the data based on different columns either ascending or descending.
There might we workarounds to achieve the same goal that I am not aware of.
Any thoughts is appreciated.
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Oct 5, 2006
I am running a Stored procedure which select from a table and returns approx 800000 records. When calling from any client machine it takes long time to return the result (90 sec). It waits for ASYNC_NETWORK_IO which is pushing the result to client. If select statement is used with TOP operator to return less number of records it executes faster. When calling from the server the stored proc returns data in 13 sec with all records. In another machine of identical HW and configuration this problem is not there. Can anyone help how to improve ASYNC_NETWORK_IO issue?
Environment
SQL-2005 SP1 64 bit Standard on Active/Passive cluster
Windows -2003 Ent.
Thanks
-Ashis
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