Slow Queries In SQL Express

Jul 17, 2007

Some queries take a long time to complete.

Setup is:

- SQL Express SP2

- Windows Vista Business

- 2 GB RAM

- Core 2 Duo processor

- Connecting to (local) server with SQL Authentication

- only 1 Instance of MSSQLSERVER

Simple queries (SELECT * FROM TableName) wher the table has only a few records. This query may take up to 30 or more to execute. This slowness is consistent to certain tables. Other much larger tables run queries fine.

If a different computer logs in to the same server, queries provide instantaneous results.



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Long Memory Grant Queue Waits In SQL Server Express SP2 Causes Slow Queries

Sep 10, 2007



I have a 2GHZ cpu with 1GB of RAM. I occassionally see very slow (long) queries against a local SQL Server 2005 Express (SP2) database. The issue occurs against different SQL Queries, but all queries are rather basic select statements Perfmon shows that the SQL Server counter for the "MEMORY GRANT QUEUE WAIT Avg MS" gets extremely high (25000+ ms). Perfmon also also shows that PAGING is not occuring, and the system is not under unsual stress. The problem is not reproducible with MSDE.

Has anyone seen this issue, or have any recommendations for a next course of action?

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Slow Queries

Mar 15, 2001

Hi,
Some of my queries are running too slow.It's taking as long as 30secs .Earlier the same query was taking less than 5 secs.
I understand the db has grown BUT I do not know to look at this query where should i start from and what should I look into.
It is on production server.
the db size is 15GB and unallocated is 9GB.
log space used is 4%.
TIA.

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Slow Queries

Oct 10, 2002

Howdy. I have a table in my DB that has about 2 million records. The search times are taking 15 - 30 seconds depending on the number of records I am returning. Is this normal? The machine is NT 4 sp6a Dual PIII 866's with 1 GB of RAM on RAID5 SCSI disk. This seems like a long time to me. What kind of performance should I expect? Any kind of tuning steps I can take?

Thanks


Shane

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Slow SQL Queries

Jan 5, 2005

Hi All,

Am very new to SQL server so don't really understand what effects the speed of queries. I have the two below queries, which are nearly the same apart from one has a right join and the other doesn't. The both return about 5000 records, and I am implementing this query from an accss databse with an odbc link to sql server. What I don't understand is it takes about 8 seconds for the query with the right join in to return the records and only about 4 seconds for the one without. What I'm after really is just some general advice on how to bulid fast queries, and any advice on the two below queries would be nice. Thanks


SELECT Employees.Name, Calls.CallDate, Calls.CallTime, Calls.Callername, Contacts.CompanyID, Contacts.ContactID, Calls.CallerNumber, Calls.CallerCompany, Calls.ActionTakenID, Calls.OperatorID, Calls.Confirmed, Calls.Charged, Calls.Notes, Company.CompanyName, Operators.Operatorname, Calls.CallID, Calls.ShortMessage
FROM (Contacts INNER JOIN Company ON Contacts.CompanyID = Company.CompanyID) INNER JOIN (Operators INNER JOIN (Employees RIGHT JOIN Calls ON Employees.EmployeesID = Calls.EmployeesID) ON Operators.ID = Calls.OperatorID) ON Contacts.ContactID = Calls.ContactID
WHERE (((Contacts.ContactID)=1442))
ORDER BY Calls.CallDate DESC , Calls.CallTime DESC;


SELECT Employees.Name, Calls.CallDate, Calls.CallTime, Calls.Callername, Contacts.CompanyID, Contacts.ContactID, Calls.CallerNumber, Calls.CallerCompany, Calls.ActionTakenID, Calls.OperatorID, Calls.Confirmed, Calls.Charged, Calls.Notes, Company.CompanyName, Operators.Operatorname, Calls.CallID, Calls.ShortMessage
FROM (Contacts INNER JOIN Company ON Contacts.CompanyID = Company.CompanyID) INNER JOIN (Operators RIGHT JOIN (Employees RIGHT JOIN Calls ON Employees.EmployeesID = Calls.EmployeesID) ON Operators.ID = Calls.OperatorID) ON Contacts.ContactID = Calls.ContactID
WHERE (((Contacts.ContactID)=1442))
ORDER BY Calls.CallDate DESC , Calls.CallTime DESC;

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Need Help Optimizing Slow SQL Queries (?)

Aug 6, 2007

Hi, I have absolutely no knowledge of PHP or SQL .... I moderate a PHPBB forum at www.savingshelterpets.com
Our web host (SiteGround) has taken our site down temporarily because we are overloading the server. I have no idea how to fix the problem, so hopefully someone here can help me out! Smiley

PHP version 4.4.4
MySQL version 5.0.27-standard-log

Here's the info sent to me by SiteGround (I don't understand a word of it!):

quote:Upon further investigation, it turned out that the following queries in your account are slow and heavily consume server resources:

# User@Host: savingsh_phpb1[savingsh_phpb1] @ localhost []
# Query_time: 4 Lock_time: 0 Rows_sent: 1 Rows_examined: 1284
use savingsh_phpbb2;
SELECT user_id, username, user_password, user_active, user_level, user_login_tries, user_last_login_try
FROM phpbb_users
--
delete from rs_stat_ip where platnost_do<'2007-08-03 16:49:43';
# User@Host: savingsh_phpb1[savingsh_phpb1] @ localhost []
# Query_time: 5 Lock_time: 3 Rows_sent: 1 Rows_examined: 0
use savingsh_phpbb2;
SELECT * FROM phpbb_optimize_db;
# User@Host: binaryte_lhlp1[binaryte_lhlp1] @ localhost []
--
# Time: 070803 16:50:27
# User@Host: savingsh_phpb1[savingsh_phpb1] @ localhost []
# Query_time: 4 Lock_time: 2 Rows_sent: 1 Rows_examined: 0
use savingsh_phpbb2;
SELECT t.topic_id, t.topic_title, t.topic_status, t.topic_replies, t.topic_time, t.topic_type, t.topic_vote, t.topic_last_post_id, f.forum_name, f.forum_status, f.forum_id, f.auth_view, f.auth_read, f.auth_post, f.auth_reply, f.auth_edit, f.auth_delete, f.auth_sticky, f.auth_announce, f.auth_pollcreate, f.auth_vote, f.auth_attachments
FROM phpbb_topics t, phpbb_forums f

In order to have the limitations removed, please optimize your script.

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How To Analyze Slow Performance Queries

Feb 27, 2008



Hi All

I struck up with Slow perfornace query,Please some body help me how to analyze Slow perforamnce queris.

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Jul 26, 2007

I'm working with a table with about 60 million records. This monster is growing every minute of the day as well, by 200,000 - 300,000 records/day. It's 11 columns wide, and has one index on a datetime column. My task is to create some custom reports based on three of these columns, including the datetime one.

The problem is response time. Any query executed on this table takes forever--anywhere between 30 seconds and 4 minutes. Queries such as this one below, as simple as it is, can take a minute or more:

select
count(dt_date) as Searches
from
SearchRecords
where
datediff(day,getdate(),dt_date)=0


As the table gets larger and large, the response time is going to get worse and worse. Long story short, what are my options to get the speed of queries down to just a few seconds with a table this big? So far the best I can come up with is index any other appropriate columns (of which there is one for sure, maybe two).

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Oct 12, 2005

I've been using MS-SQL Server for many years but never come across this problem before.

When I try and run a very simple query from Query Analyzer it takes a LONG time. Even when there are no tables involved!

Even:-

select 1
go

takes 28 seconds to return '1' when running against the local server. i.e. both QA and the Server are running on the same machine.

Can anyone help explain how to get my performance back! Thanks.

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Queries Are Slow When Accessed From Remote Machine

May 30, 2007

Hi,

I have succesfully created a Stored Procedure which runs under 2 seconds locally.

However when i run the same proc from another machine in the LAN, the response times vary from 5 sec to over 40 Secs and even occassionally times out.

My server is SQL 2005 Dev Edition (32 Bit) running on a Dual Core Box with 2GB memory.



Any Ideas why this would be happening?

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Slow Execution Of Queries Inside Transaction

Apr 11, 2006



I have some VB.NET code that starts a transaction and after that executes one by one a lot of queries. Somehow, when I take out the transaction part, my queries are getting executed in around 10 min. With the transaction in place it takes me more than 30 min on one query and then I get timeout.
I have checked sp_lock myprocessid and I've noticed there are a lot of exclusive locks on different objects. Using sp_who I could not see any deadlocks.
I even tried to set the isolation level to Read UNCOMMITED and still have the same problem.
As I said, once I execute my queries without being in a transaction everything works great.
Can you help me to find out the problem?

Thanks,
Laura

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Large FullText Tables - Slow Queries

May 31, 2007

Hi,



I currently have a large table (35 million rows, over 80GB). I have one varchar(max) column on the table that is used in the fulltext index.



To query the complete index is fast, for example:



SELECT 'ipod', COUNT(*)

FROM CONTAINSTABLE(MyDB.dbo.Contents, [Body], 'ipod') CT



This took 70 seconds (which I can live with). However, I seldom run queries like this, most are more like:



SELECT 'ipod', COUNT(*)

FROM CONTAINSTABLE(MyDB.dbo.Contents, [Body], 'ipod') CT

JOIN Pages ITP ON ITP.PageID = CT.[Key]

JOIN Feeds ITF ON ITP.IPID = ITF.IPID

JOIN Buyers ITB ON ITB.IBID = ITF.IBID

WHERE ITB.ID IN (1342,246)



These queries are much slower (this example took 17 minutes). I understand that FT searches the index and returns all rows that match the query to SQL. SQL then performs the joins and counts only the correct results. (Correct me if I'm wrong here).



One solution I've seen to this to put data or "tags" into the FT column - so my Body column would become something like:



'{ID:1342}' + [Body]



That sounds like a very good idea. I could then change the 2nd query above to be:



SELECT 'ipod', COUNT(*)

FROM CONTAINSTABLE(MyDB.dbo.Contents, [Body], '("ID:1342" OR "ID:246") AND "ipod"') CT



That all works well until I want to select 1000 different ID's because the FT query will become very long and complex. Also I'm only including one column (ID) in this example - but I have about 7 or 8 columns that I would need to include in these "tags". Quering multiple columns become very complex quickly and no doubt I will reach a query limit at somepoint.



If anyone has any other suggestions to the above I'd love to hear them. Another thought I'm having is to partition the table. I can find very little online about how FT behaves on partitioned tables - I fear it behaves exactly the same, what I'd like to think is that I could partition the table on an ID say 100 per partition or something, and then fulltext would only search the relevant partitions. If it behaves like this it may work. If no-one knows then I'll give it ago, but this will take me a while due to the table size - so I'm hoping one of you clever lot know!



Many thanks for any advice.



Simon





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My Sql Express Is So Slow?

Aug 25, 2006

Has anyone else noticed delays with SQL Express? I'm not really talking about delays on the queries but just delays in general response. For example: everything is running great, then for about 2 minutes I get connection timeouts etc can't even open stuff in the management studio without getting timeouts ... then as strangely as it started everything goes back to normal and requests are served again.
The server has nothing on except 1 website, its Win 2003 Server. 512MB Ram on a PIV. The memory usage is low and during the "lockups" the machine isn't showing any processor usage and SQL mem usage is around 40Megs.
I am not using User Instances either. Nothing in the event logs. What is odd, is its happening on 3 of my machines ..... all with different sites, the only thing in common between them is SQL.
thanks,
-c

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Jul 7, 2014

I have a remote server with SQL server 2014 instance on it. There is nothing else running on the SQL Server box(dedicated SQL box). There is only one instance of SQL 2014 on the server. No other versions of SQL server are on the server.

Issue:

1. When I execute a query connecting to the SQL server instance through my local SSMS, the query executes in 30 secs.

2. When i connect to remote server through windows RDP session and execute the same query in the SSMS(on server), then query executes in 1 minute.

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SQL Slow From MSDE 2000 To SQL Express

Feb 2, 2007

I posted this in one of the VB forums but I'm starting to think itmight be more appropriate to have it here, since it really seems to bea SQL server (MSDE/Express 2005) problem:Hey, all, I have a problem with queries against a SQL server instancethat I just found and is causing me fits. I hope someone can pointmein the right direction, please. TIA.Basically, I got a Vista OS machine to test my VB6 app on it as someof my clients will be switching over in the coming months. I went toa local Circuit City during early business hours in the middle of theweek and I installed my application on each of 5 PC's on the newVistaOS (Tuesday, when it was released). I had read that MSDE 2000, whichI normally use as my DB is not supported on Vista so I had downloadedand was using SQL Express 2005. Each system had at least a 1.9 GHzdual core processor and 1 GB of RAM. One process in my program findsrecords in one table that do not match records in another table andthen reports those un-matched entries. On my development machine(laptop with 1 GB of RAM, XP Pro SP2, MSDE 2000 (current SP), 2 GHzCentrino (IIRC)) the process takes less than 30 seconds consistently.On each of those 5 systems at Circuit City the process took 5 minutes(on each of 3 HP machines, a1700n, a1720n, a1730n, and 11 minutes oneach of two Gateway systems (the model numbers of which I forget atthe moment). Each of these computers should be much faster than mylaptop, and some had twice the RAM, and all had SATA or SATA IIdrivesinstead of my piddly 5400 laptop drive, I would have thought they'dall be faster but were abysmally slow.So, seeing a huge difference in the time, and to try to keep thisshort and sweet, I fired up another computer I have, running XP SP2,on 512 MB RAM, AMD Athlon 2300+. First I loaded MSDE 2000 and myapplication and ran the process. < 30 seconds on each of multipleruns. Second, I unloaded MSDE 2000 and installed SQL Express 2005andmoved the DB to it (sp_attach_db) which caused some upgrading(messages reported in OSQL about update/upgrade). When it was done Irebooted, to be sure, and the ran the program and the process again.On the same data, on the same computer, the process took 7-9 minutesconsistently on each of several runs. This makes this part of theapplication unusable, and even the simple stuff like grabbing asinglerecord from the DB (maybe 5 columns of no more than 500 bytes total)is noticeably slower on the SQL Express 2005 than on MSDE 2000.So, the problem seems to be with my interaction with the DB. I amusing ADO 2.8 in VB 6 (SP 6). I use DSN-less connections with aconnection string like: Driver={SQL Server};server=(local)caredata;database=caredata;Uid=sa; Pwd=<password>I use the RecordsSet Object to open the data similar to this:oRS.OpenstrSQL$, oCN, adOpenKeysetafter the oCN object has had the connection string set and the objectis opened.Considering that the same computer, against the same data, with thesame program, takes about 14 times (or more) longer to run, then ithas to be either that SQL Express 2005 is slow OR that my program isinteracting with it in an incorrect manner.Can someone point me in the right direction, please?Thank you.--HCSo, the problem isn't Vista

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Jan 22, 2008

I've just moved a website/database application from windows server 2000 and sql server 2000 to windows server 2003 sp2 and SQL 2005 Express SP2. Database intensive pages now take about 40 seconds where before they took 2-3 seconds.

Things I've tried that haven't helped...

- I changed the ADODB connection string

from: sCnString = "dsn=mydsn;Database=mydatabase;uid=myuid;pwd=mypassword"

to: sCnString = "driver={SQL Native Client};server=myserverSQLEXPRESS;Database=mydatabase;uid=myuid;pwd=mypassword"

- Checked that autoclose is false.

What else can I look at?

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Apr 26, 2007

Hi,



I have got an application running which connects 2 databases and performs an action that copies data from one database to the other database.

When using SQL Server 2000 MSDE, it takes about 5 seconds.

When using SQL Server 2005 Express Edition it takes about 30 seconds.



For testing 2005, I use 'upgraded' databases, so same indexes and data. I tried reindexing the databases, but always get the same result.



My setup string for installing SQL Server 2005 Express is :



/qb ADDLOCAL=ALL INSTANCENAME=DBNAME SECURITYMODE=SQL SAPWD=QWERTY SQLACCOUNT="NT AUTHORITYSYSTEM"



The code (ADO) is something like :



SELECT FROM original database

-- do something with data

INSERT INTO other database

Until EOF



Any idea how to solve this ???



P.S. When perfoming a simple Query on the databases (with 1.000.000 rows result) with SQL Server Management Studio Express, I see 37 seconds for SQL Server 2000 and 33 Second for SQL Server 2005. That is more the result I expect.

-------

XPPro SP2 3Ghz 1Gb

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May 1, 2006

Hello,
i want to install the SQL 2005 express Server on a HP-Netserver LH4 with 1 Xeon 500 CPU. I know, that i must have a 600MHz CPU, but i cant change the CPU. Is there one way to start the SQL server?
Thanks
Michael

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Apr 22, 2008

Hi,
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Any help ?
Stan

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Oct 30, 2007

Hi,

I've recently installed SQL Server 2005 Express on my PC (winXP).

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This is a fresh install so I can't understand why it runs so slowly! When I used to use enterprise manager with SQL Server 2000 it worked at lighting speed.

What's going on?

CHeers
Matthew

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Mar 8, 2007

Sql 2005 Express with XPP SP2 and the latest MS updates sometimes runs very slow.

A SELECT which should take a fraction of a second can take several 10s of seconds.

I have checked autoclose is OFF for database using

use master
go
exec sp_dboption 'your_db_name','autoclose'

And it is definitely showing as OFF



I've looked at the Activity Monitor and when stalled it shows one or two processes for my database which are sleeping with 1 or 2 open transactions. When I look at their details they are simple select statements.

Often when my computer should be idle SqlServer.exe can be consuming 20 - 30% of cpu

I've noticed that I have TWO sqlservr.exe showing in my Task Manager, Processes display

One sqlservr.exe is 27K using about 17% even tho computer is idle has username NETWORK SERVICE

Other sqlservr.exe is 343K using 0% has user name SYSTEM

I don't know why.

Wayne

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Jan 30, 2007

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Mar 10, 2008



I am running simple queries against test SQL Express installation and they take a very long time to return data. I have two SQL Express instances installed on colleagues' machines to which I connect for my testing and both exhibit the same problem. The setup is Windows XP SP 2 with 2 GB RAM and 3.6 GHz CPU. I am querying a table with around 7000 records and my query is simply SELECT TOP 1000 * FROM MyTable. It takes over 10 seconds to return the recordset!



I have done the research and found posts, which talk about AUTO_CLOSE option, indexes, query execution plan, etc. I have done everything those posts recommend, but performance is still terrible. All the instances have SQL 2005 SP2 applied.



I also found that the query runs fast locally on each SQL Express instance, the problem seem to happen when I am trying to pull the data over the network.



I am really not sure what else to look for.



Thank you,



Michael

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Jan 5, 2007

Hi

We have SQL Express running very slowly on Small Business Server. Does
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(Autoclose is set to
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Thanks

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May 5, 2007

Hi everybody!



I have made a simple application with VB6 and SQL 2005 Express.



And after testing it in a network simulated with Virtual-Machine Workstation, the "real world" application was first getting slower and slower, and finally giving timeout errors.



It is even difficult to connect. The application times out always at 30 secs although the ado connection timeout was established longer (45)



I have checked on the machine where the server is installed, just in case the slow down was due to network problems, but it fail locally too.



Any help is wellcome







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Sep 16, 2006

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Mar 1, 2008

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Nov 9, 2006

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Thanks,

Phillip

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Jul 6, 2006

Hi there,



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Joseph Beckett

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Jul 20, 2005

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Apr 14, 2008


Hello
I got a sql server express that i am trying to connect form win or web forms(2.0) €“ express as well.

My problem:
Can not connect to the server in any way!
Even the designer cont find any sql server on my machine; for example "the data source configuration manager" (gui) in enyn way its can not find the sql server express (2005)

So my question is:
if all what i used is the express version - is it possible to connect and use the sql.s express form the vs. express

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Nov 13, 2003

I am writing a data access web page, but I find that the excution speed is too slow.
My data base is just a data table which have five columns: id, code, quantity, price and Date. The data base has about 45000 rows. When I use OSQL or Query function, speed is just fine.

Here is the main code which I think cause the speed slow:

string conn = ConfigurationSettings.AppSettings["connectionstring"];
SqlDataAdapter adapter_2 = new SqlDataAdapter("select * from table",conn);
DataSet ds = new DataSet();
adapter_2.Fill (ds,"table");
DataTable YahooOrders = ds.Tables["YahooOrders"];
DataRow[] product = new DataRow[20000];

.......

foreach (string s in split) // actually the split here has only one string in it
{
product = table.Select ("code like '"+s+"%' and Date >='"+minDate+"' and Date <='"+table.Select("Date = Max(Date)")[0][1].ToString()+"'");
foreach(DataRow myRow in product)
{
int count = Convert.ToInt32(myRow[2]);
itemQuantity = count + itemQuantity;
revenue = Convert.ToDouble(myRow[3]) * count + revenue;

// get product code, ignore repeated code
int myIndex=code.BinarySearch( myRow[1] );
if ( myIndex < 0 )
code.Add(myRow[1]);
}
orderQuantity = product.Length + orderQuantity;
}
The first foreach actually excutes just one time, so it won' t cause any speed problem.
The second foreach' s job is to sum each column of specified rows which is product here.
So, any ideas about this?
Thanks!

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Too Slow

Mar 8, 2001

All,

Actually from the application the developers are using count(column) to know the no. of rows resulted by a statement which joins many tables but its taking lot of time.

Is there an easy way to get the count of records(result set) of the output.

I cant use sysindexes b'z i need the count of the output genereted by the SQl Statement which joins many tables and retrieves many rows.

Thanks,
Sajai

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