How To Tune The Sql Server?
Mar 22, 2004
hi here has a question for the mssql,
a problem occurs when i run a large database, the running speed is very slow.
for example, if i want to seek the record of 1500 employees with 15 per person(average) within 1 year(12 months), that mean i have to find record for 1500 * 15 * 12 time.
so, could i find a way to solve this problem? is this call tune the sql server/index/view?
what different of tune the sql server with index and view?
thanks for giving me advice.
:)
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Mar 23, 1999
ENVIRONMENT:
I have SQL Server6.5 running under a dedicated NT Server. NT configuration includes dual pentium 200Mhz processors, 256MB RAM and RAID system.
The Database size is 1GB with actual data size about 500MB.
PROBLEM:
I have an application which uses lots of joins to get the results. My select query is running too slow even when I run it on the server.
I updated the statistics and rebuild all the indexes on the tables used by the query.
Any suggestions on using SQL Trace and tuning the server/database are welcome.
Srini
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Sep 21, 2005
I have written a query which fetches data from a table with huge amount of data. This query is actually being used in a stored-procedure and it takes a lot of time, hence slows down my SP.
Here is the query that I'm builiding in the stored-procedure:
-------------------------------------------------------------
SET @selectLeadsInPeriodString = ' SELECT LM_Dealer, LM_Brand, SUM(LM_ImpressionCount)
FROM LM_ImpressionCount_Dealer'
IF(@timeCriterion IS NULL OR LTRIM(RTRIM(@timeCriterion)) = '' OR LTRIM(RTRIM(@timeCriterion)) = 'NULL')
SET @selectLeadsInPeriodString = @selectLeadsInPeriodString +
' WHERE (CONVERT(varchar,[LM_ImpressionCount_Dealer].[LM_ImpressionDate],102) >= ''' +
CONVERT(varchar,@startDateTime,102) +
''' AND CONVERT(varchar,[LM_ImpressionCount_Dealer].[LM_ImpressionDate],102) <= ''' +
CONVERT(varchar,@endDateTime,102) + ''')'
ELSE IF(@timeCriterion = 'CurrentMonth')
SET @selectLeadsInPeriodString = @selectLeadsInPeriodString +
' WHERE MONTH([LM_ImpressionCount_Dealer].[LM_ImpressionDate]) = MONTH(GETDATE())'
ELSE IF(@timeCriterion = 'PreviousMonth')
SET @selectLeadsInPeriodString = @selectLeadsInPeriodString +
' WHERE MONTH([LM_ImpressionCount_Dealer].[LM_ImpressionDate]) = MONTH(GETDATE()) - 1'
ELSE IF(@timeCriterion = 'YearToDate')
SET @selectLeadsInPeriodString = @selectLeadsInPeriodString +
' WHERE ([LM_ImpressionCount_Dealer].[LM_ImpressionDate] >= cast((''1/1/''+cast(year(getdate()) AS varchar(4))) AS datetime)
AND CONVERT(varchar,[LM_ImpressionCount_Dealer].[LM_ImpressionDate],102) <= CONVERT(varchar,GETDATE(),102))'
IF(@brand IS NOT NULL AND LTRIM(RTRIM(@brand)) <> '')
SET @selectLeadsInPeriodString = @selectLeadsInPeriodString +
' AND [LM_ImpressionCount_Dealer].[LM_Brand] = ''' + @brand + ''''
SET @selectLeadsInPeriodString = @selectLeadsInPeriodString + ' GROUP BY LM_Dealer, LM_Brand'
The variables used in the query formation above are passed as input parameters to the SP.
The table being queried has columns 'LM_Dealer', 'LM_Brand', 'LM_ImpressionCount' and 'LM_ImpressionDate'.
Also, the table has a non-clustered index on the column LM_ImpressionDate.
With all this information, can anyone suggest as to how I can optimize the query above.
Thanks in advance.
-Dex
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Sep 30, 2005
I think this is very silly question
but It is hard for me :eek:
SELECT email, host FROM WAITING_AUTH WHERE email NOT IN
(SELECT email FROM MEMBER)
AND host NOT IN (SELECT host FROM MEMBER)
thanks~ Have a nice weekend
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May 11, 2004
Hi,
I have SQL desktop version installed and for the last few days it has really slowed down. I have ran many anti-virus etc. and all is okay on that front.
Any tips regarding how I can tune things up? What should I look for and how do I go about it. Deleting LOG etc. etc???
Please guide.
Thanks.
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Sep 15, 2006
If anyone is able to provide advice for tuning the below query in sqlserver, it is much appreciated. In addition any index suggestions arealso appreciated as I have access to the tables. Thank you.select a.id, isnull(b.advisement_satisfaction_yes, 0) asadvisement_satisfaction_yes,isnull(c.advisement_satisfaction_no, 0) as advisement_satisfaction_no,casewhen isnull(b.advisement_satisfaction_yes, 0) >isnull(c.advisement_satisfaction_no, 0) then 'YES'when isnull(b.advisement_satisfaction_yes, 0) <isnull(c.advisement_satisfaction_no, 0) then 'NO'when isnull(b.advisement_satisfaction_yes, 0) =isnull(c.advisement_satisfaction_no, 0) then 'TIE'end as Satisfied_With_Advisementfrom aleft Join(select id, count(answer_text) as Advisement_Satisfaction_yes from awhere question = 'The level of Academic Advisement I received from theUniversity staff during this course was appropriate.'and answer_text = 'yes'GROUP BY id) bon a.id = b.idleft join(select id, count(answer_text) as Advisement_Satisfaction_NO from awhere question = 'The level of Academic Advisement I received from theUniversity staff during this course was appropriate.'and answer_text = 'NO'GROUP BY id) con a.id = b.idwhere question = 'The level of Academic Advisement I received from theUniversity staff during this course was appropriate.'
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Apr 18, 2002
How can l trim the code and make the procedure run faster ???????????????
CREATE Procedure Disbursements_Cats
(@startdate datetime,@enddate datetime)
As
Begin
SELECT Transaction_Record.loan_No AS loan_no,
Transaction_Record.transaction_Date AS Transaction_Date,
Transaction_Record.transaction_type AS Transaction_type,
Transaction_Record.transaction_Amount AS Transaction_Amount,
Product.product AS Product,
Product_Type.product_Type AS product_type,
Product_Type.loan_Type AS Loan_type,
Customer.first_name AS first_name,
Customer.initials AS initials,
Customer.second_name AS Second_Name,
Customer.surname AS surname,
Customer_identification.idno AS ID_No,
Bank.Bank_name AS Bank_Name,
Bank_detail.Account_no AS Account,
Bank_detail.Branch AS Branch
FROM Transaction_Record CROSS JOIN
Bank_detail CROSS JOIN Bank CROSS JOIN
Customer CROSS JOIN Product CROSS JOIN
Loan_Type CROSS JOIN Product_Type CROSS JOIN Customer_identification
End;
GO
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Apr 24, 2008
Hi,
I have a query as mentioned below:
SELECT BillCurrencyID,DistD,Amount,PartnerFlag1
FROM Factsales_tab_Dtls (NOLOCK)
WHERE (sales_year =2007 OR sales_year=2008)
AND Country ='US'
1) Table Factsales_tab_Dtls is having more than 5.5 million of records.
2) It is having 32 columns.
3)There's nonclusetered index on columns sales_year & country
4)The query takes longer time for execution
Please help me fine-tune the query
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May 12, 2008
Hello,
i need to tune some of my store procedures.
can any one help me how it's possible to tune particular store procedures?
Thanks
Prashant Hirani
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Feb 6, 2006
hi,I have a problem asked by one of my senior person and finding theanswer .What is the step by step procedure for tune a large sql query.OR how do we tune a large SQL query with somany joins
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Jul 23, 2005
HELP!!!I am trying to fine tune or rewrite my SELECT statement which has acombination of SUM and CASE statements. The values are accurate, butthe query is slow.BUSINESS RULE=============1. Add up Count1 when FIELD_1 has a value and FIELD_2 is NULL, or bothhave a value.2. Add up Count2 when FIELD_2 has a value and FIELD_1 is NULL.4. TotalCount = Count1 + Count2 -- (Below, basically had to reuse theSQL from both Count1 and Count2)3. Add a NoneCount when both FIELD_1 and FIELD_2 are NULL.SQL Code========SELECTSUM(CASEWHEN ((FIELD_1 IS NOT NULL AND FIELD_2 IS NULL) OR (FIELD_1 IS NOTNULL AND FIELD_2 IS NOT NULL))THEN 1ELSE 0END) AS Count1 ,SUM(CASEWHEN (FIELD_1 IS NULL AND FIELD_2 IS NOT NULL)THEN 1ELSE 0END) AS Count2,SUM(CASEWHEN (FIELD_1 IS NULL AND FIELD_2 IS NOT NULL)THEN 1ELSE (CASE WHEN ((FIELD_1 IS NOT NULL AND FIELD_2 IS NULL) OR FIELD_1IS NOT NULL AND FIELD_2 IS NOT NULL) THEN 1 ELSE 0 END)END) AS Total_Count,SUM(CASEWHEN ( FIELD_1 IS NULL AND FIELD_2 IS NULL)THEN 1ELSE 0END) AS None_Count,FROMTABLE_1
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May 2, 2007
Hi :I have a TableA with around 10 columns with varchar and numericdatatypesIt has 500 million records and its size is 999999999 KB. i believe itis kbi got this data after running sp_spaceused on it. The index_size wasalso pretty big in 6 digits.On looking at the tableAit didnot have any pks and hence no clustered index.It had other indicesIX_1 on ColAIX_2 on ColBIX_3 on ColCIX_4 on ColA, ColB and ColC put together.Queries performed in this table are very slow. I have been asked totune up this table.I know as much info as you.Data prior to 2004 can be archived into another table. I need to run aquery to find out how many records that is.I am thinking the following, but dont know if i am correct ?I need to add a new PK column (which will increase the size of thetableA) which will add a clustered index.Right now there are no clustered indices2. I would like help in understanding should i remove IX_1, IX_2, IX_3as they are all used in IX_4 anyway .3. I forget what the textbox is called on the index page. it is set to0 and can be set from 0 to 100. what would be a good value for it ?thank you.RS
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Apr 18, 2008
I've create a bunch of views to expose a logical model of the underlying database of an application server.
To enforce the security control, I've also created a CLR UDF to call the application server's API for security check and audit log.
For example, we have a table, tblSecret, and the view, vwSecret, is,
SELECT
Id,
ParentId,
Description,
SecretData
FROM tblSecret
WHERE udfExpensiveApiCall(Id) = 1
The udfExpensiveApiCall will return 1 if the current user is allowed to access the SecretData else 0. The CLR UDF call is very expensive in terms of execution time and resources required.
Currently, there are millions rows in the tblSecret.
My objective is to tune the view such that when the view is JOINed, the udfExpensiveApiCall will be called the least number of time.
SELECT
ParentId,
SecertData
FROM vwParent
LEFT JOIN vwSecret ON vwSecret.ParentId = vwParent.ParentId
WHERE vwParent.StartDate > '1/1/2008'
AND vwSecret.Description LIKE '%WHATEVER%'
Is there any way to specify the execution cost of the CLR UDF, udfExpensiveApiCall, such that the execution plan will call the UDF while it is absolutely necessary?
Is there any query hint will help?
Any recommendation?
Thanks,
Simon Chan
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Mar 29, 2004
ASP.NET and MsSQL are run inside the same machine, and inside win2000 server,
and the physical memory limit of mssql is set to 192MB.
any one have any good idea(s)? please share to us here
:)
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Jul 7, 1999
I want to tune the indexes on my database and I am trying to use the SQL Server Profiler to collect data for the Index tuning wizard to analyze. My question is what do I need to trace with the profiler so that the Index tuning wizard can work? I am looking at the trace properties in Profiler at the Events, Data Columns, and Filters tabs but I have no idea of what I need to capture.
Thanks in advance.
Mike
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Oct 13, 2015
i have a report that runs on a huge table rpt.AgentMeasures , it has 10 months worth of data (150 million records as of today and will keep increasing). i have pasted my proc below , the other tables that are joined to this huge table do not have more then 3k records.This report will be accessed by multiple users (expecting 20 ppl). as of now this reports runs for 5 mins if i pull for 1 month worth of data. if it is wise to use temp tables.
ALTER proc [rpt].[Get_Metrics]
@MinDate DATETIME,
@MaxDate DATETIME,
@Medium Varchar(max),
@footPrint varchar(max),
[code]...
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Apr 20, 2007
My server is a dual AMD x64 2.19 GHz with 8 GB RAM running under Windows Server 2003 Enterprise Edition with service pack 1 installed. We have SQL 2000 32-bit Enterprise installed in the default instance. AWE is enabled using Dynamically configured SQL Server memory with 6215 MB minimum memory and 6656 maximum memory settings.
I have now installed, side-by-side, SQL Server 2005 Enterprise Edition in a separate named instance. Everything is running fine but I believe SQL Server2005 could run faster and need to ensure I am giving it plenty of resources. I realize AWE is not needed with SQL Server 2005 and I have seen suggestions to grant the SQL Server account the 'lock pages in memory' rights. This box only runs the SQL 2000 and SQL 2005 server databases and I would like to ensure, if possible, that each is splitting the available memory equally, at least until we can retire SQL Server 2000 next year. Any suggestions?
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Aug 10, 2007
Hi,
We have an old machine which holds SQL server 2000 database. We need to migrate a whole database to a new machine which has SQL server 2005.
When we tried to move whole database using Import and Export Wizard, only tables can be selected to import/export. However we want to import/export the whole database, including tables, stored procedure, view, etc. Which tool should we use?
Thanks.
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Aug 10, 2007
Hi,
We have an old machine which holds SQL server 2000 database. We need to migrate a whole database to a new machine which has SQL server 2005.
When we tried to move whole database using Import and Export Wizard, only tables can be selected to import/export. However we want to import/export the whole database, including tables, stored procedure, view, etc. Which tool should we use?
Thanks.
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Jun 6, 2007
Hi,
When I am trying to access SQL Server 2000 database from another machine i got this error
Server: MSg 17, Level 16, State 1 [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied
but I could access the database on same server and in that server i could access other databases in different server.
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Feb 13, 2008
When I proposed start to use SQL Server 2005 for new VS 2005 web sites, one of my co-workers responded that
we will update the old SQL Server 2000 databases to SQL Server 2005 when we are ready to use 2005 SQL Server.
Questions:
1. Any expected problems to upgrade old 2000 databases to new 2005 SQL Server?
2. I have installed both 2005/Management Studio Express and 2000/Enterprise Manager in my PC. Any expected
problems when running both 2000 and 2005 SQL Server at the same database server?
3. What is the best configuration for running SQL Server 2005 when we have old 2000 databases? Upgade or not upgrade?
TIA,
Jeffrey
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Oct 20, 2007
I am getteing
need help
Query analyzer error Unable to connect server local Msg17, level 16,state 1
ODBC SQL server driver [DBNETLIB]SQL server does not exist
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Apr 3, 2008
Hi,
I am having a problem connecting my .net applications from the application server to the database server. When I run the application from my windows xp (sp2) box it works fine. When I try to connect via SQL Management Studio to the database server from the application server I get the same error.
Here is the error:
System.Data.SqlClient.SqlException: An error has occurred while establishing 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)
Here is the Environment:
App Server:
Windows Server 2003 Standard Edition
Inside Company's Firewall/ Network
Database Server:
Windows Server 2000 Advanced Edition
SQL Server 2000 SP4
Remote Connections to the Server is checked
Enable Protocols: Named Pipes & TCP/IP
TCP/IP Port: 1402 (I don't know why it isn't the default of 1433)
The db server is sitting out side the Company's firewall (don't ask me why). I can access it fine from inside the firewall on my XP box but not from windows server 2003. There is a web server outside the our network that also connects to the db server with no problem and that is running Windows Server 2003 Web Edition.
I can ping the db server from the app server using the IP address.
I tried using the IP address and the port 1402 in my connection string but that didn't work from any machine (XP and Server).
I imagine the issue is somehow related to the company's firewall but why would it only block Windows Server 2003 and not XP?
What do I tell the network admin to change?
Any help would be appreciated.
Thanks,
Oran
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Jan 4, 2013
if you can restore a database to Server B using Server A as the service. Meaning we would issue the command on Server A but somehow point to Server B as where we want the restore to happen.
The backup file would be in a location independent of both servers.
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Jul 23, 2005
Dear all,On Win2000 server with SP3, I am trying to access a SQL Server 7.0database, "TestDB", from VB6 via a SQL Server ODBC system DSN using ADO2.7. In SQL Server Enterprise Manager, there is a login named "Tester".In its property window, NO "Server Roles" was assigned but its"Database Access" was set to "TestDB". This login was also made as theuser of "TestDB" with "public", "db_datareader" and "db_datawriter"selected as its "Database role membership". All the tables I am tryingto access in "TestDB" were created under "Tester".My code is like:Set conn = New ADODB.Connectionconn.Open "DSN=TestDSN;UID=Tester;PWD=test"Set cmd = New ADODB.Commandcmd.ActiveConnection = conncmd.CommandText = SQLset rs = cmd.Execute()If I set the SQL to something like "SELECT * FROM tbl_test", I alwaysget an error of "-2147217865" saying "[Microsoft][ODBC SQL ServerDriver][SQL Server] Invalid object name tbl_test". If I set the SQL to"SELECT * FROM Tester.tbl_test", everything runs properly. Could anyoneplease kindly advise why the first SQL is not working? Or in otherwords, why must I prefix the table name with its owner while the DBconnection is already made under that owner name? Thanks in advance.Tracy
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Sep 20, 2006
When I try to migrate a database on a SQL Server 2000 server to a SQL Server 2005 server with the Copy Database Wizard of the SQL Server Management Studio, I'm confronted with the following problem;
Performing operation...
- Add log for package (Success)
- Add task for transferring database objects (Success)
- Create package (Success)
- Start SQL Server Agent Job (Success)
- Execute SQL Server Agent Job (Error)
Messages
* The job failed. Check the event log on the destination server for details. (Copy Database Wizard)
When I take a look at 'Event viewer' on the SQL 2005 server, the following error is displayed;
InnerException-->An error has occurred while establishing 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)
I already enabled the MSSQLSERVER network configuration protocols (TCP/IP and Named Pipes ).
How do I solve this problem?
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Jan 22, 2008
My site works fine in VWD2008 express, but I get this error when I try to use it on my live website.
An error has occurred while establishing 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.
According to this article: http://support.microsoft.com/kb/914277 I am supposed to:
1.
Click Start, point to Programs, point to Microsoft SQL Server 2005, point to Configuration Tools, and then click SQL Server Surface Area Configuration.
Ok, there is no such program in this folder. The only thing in there is "SQL Server Error and Usage Reporting"...
The other thing I am greatly concerned with is this: All is want is for my webpages to be able to access my database for user authentication. I DO NOT want to grant the internet rights to remote connect to my database.
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Mar 24, 2008
Hi All,
Please some one help me...
I have to insert a csv into one table in sql server. But the problem is the file is in one server and SQL SERVER 2005 is in other server..
how do i insert the file....
please help me.....
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May 31, 2006
Hi Guys,
I have had SQL Server Express and Sql Server Management Studio Express installed on my machine for some time and recently tried to install a trial of SQL Server 2005 as well. (Yes, I'm migrating from Visual Studio Express to Visual Studio Professional, just as in tended!)
Everything went fine except that nothing seemed to be installed. I searched in all the obvious places - both on the Start/Programs menu and on the hard-drive: nothing.
A check under Add/Remove Programs showed that Sql Server 2005 Express was installed, but called SQL Server 2005.
So after a number of retries in which the install program kept saying that there was nothing to install, I selected every option under Advanced in the intall process. This resulted in stuff being installed and I now have SQL Server 2005 running on my machine, but no SQL Server Manager icon.
My questions are:
Where can I find the SQL Server Manager executeable?
Has anyone installed SQL Server Express, SQL Server Mangement Studio Express, SQL Server 2005 and SQL Server Management Studio on a single machine successfully? If so, what order did you install them in? (I'm planning on uninstalling everything SXQL Server related and starting again.)
Thanks very much for your help.
Regards
Gary
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Jul 23, 2005
Hi,Is it possible to install on a Windows server 2003,SQL SERVER 2000 in the folowing configuration :SQL server 7.0 as a default InstanceandSQL server 2000 as a named instance.Thanks for your answer.
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May 4, 2007
Hi
I have created a linked server from SQL Server 2005 (SP 1) to SQL Service 2000 (SP 4) with a sql server login that is available on both servers but with different passwords and permissions.
I am getting the following error while accessing the linked server in management studio based on the scenario given below ;
------ Error Message Starts
OLE DB provider "SQLNCLI" for linked server "(SQL Server 2000 instance name)" returned message "Communication link failure".
Msg 10054, Level 16, State 1, Line 0
TCP Provider: An existing connection was forcibly closed by the remote host.
Msg 18456, Level 14, State 1, Line 0
Login failed for user 'abc'.
------ Error Message Ends
Consider login name is abc.
Now this login abc has sysadmin rights on sql server 2005.
The same login abc has only db_datareader rights on sql server 2000 on just one database and is not associated with any fixed server role.
I have configured the linked server using the following options;
1. I have tried impersonating login from SQL Server 2005 to SQL Server 2000 .
2. I have also tried specifying remote login / password option.
Anyone having any idea, would be of great help.
Regards,
Salman Shehbaz.
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