Queries Take A Long Time After Sp2 Installation

Jun 5, 2007

Has anyone had thsi issue, if so what was the fix?



We installed service pack2, the day after 2 of our production jobs started taking a long time to complete and causing a ton of blocking.



it went from running in 2 minutes to now taking 3 hours and 29 minutes to run. Can someone help?

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It Takes A Long Time To Insert The First Record Each Time When The Program Start

Dec 15, 2006

I am using VS2005 (VB) to develop a PPC WM5.0 Program. And I am using SQLCE 3.0. My PPC Hardware is in 400MHz.

The question is when the program try to insert the first record into sdf database after each time the program started. It takes a long time. Does anyone know why and how can I fix it?

I will load the whole database into a dataset when the program start and do all the "Insert", "Update", "Delete" in this dataset and fill it into database after each action.

        cn.Open()
        sda = New SqlCeDataAdapter(SQL, cn) 'SQL = Select * From Table
        scb = New SqlCeCommandBuilder(sda) 
        sda.Update(dataset)
        cn.Close()

I check the sda.update(), it takes about 0.08s for filling one record into database normally. But:

1. Start the PPC Program

2. Load DB into dataset

3. Create a ONE new record in dataset

4. Fill back to DB

When I take this four steps everytime, the filling time is almost 1s or even more!

Actually, 0.08s is just a normal case. Sometimes, it still takes over 1s to filling back a dataset which only inserted one record when the program is running. (Even all inserted records are exactly the same in data jsut different in the integer key)

 However, when I give up the dataset and using the following code:

            cn.Open()
            Dim cmd As New SqlCeCommand(SQL, cn) ' I have build the insert SQL before (Insert Into Table values(XXXXXXXXXXXXXXX All field)

           cmd.CommandType = CommandType.Text
            cmd.ExecuteNonQuery()
            cn.Close()
            StartTime = Environment.TickCount

 I found that it is still the same that the first inserted record takes more time, but just about 0.2s. And the normal insert time is around 0.02s. It is 4 times faster!!!

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Apr 3, 2008

1. could any one tell me in a simple way how to troubleshoot long running queries.
2.what is the default recovery model

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May 9, 2008

Hello,

I want to find long running queries?

Can any one help me?

Thanks
Prashant Hirani

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Mar 5, 2002

Hello All

I have queries which take over 30 secs to run, which I wish to monitor.
Currently, I am monitoring using sql profiler.
Is there any way of setting up mail to e-mail me when such a query happens.
Could I set up an Alert, or is there some other method.

I want to be able to react to these events faster before the users complain.
I am using sql server 7 enterprise and I have exchange set up.

Any help would be great

Pargat

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Validation Queries Running Too Long

Aug 30, 2006

I have a table that contains approx 200 thousand records that I need to run validations on. Here's my stored proc:

[code]
CREATE PROCEDURE [dbo].[uspValidateLoadLeads]
@sQuotes char(1) = null, @sProjectId varchar(10) = null, @sErrorText varchar(1000) out
AS BEGIN
DECLARE @ProcName sysname, @Error int, @RC int, @lErrorCode bigint, DECLARE @SQL varchar(8000)

IF @sQuotes = '0'
BEGIN
UPDATE dbo.prProjectDiallingList_staging
SET sPhone = RTrim(LTrim(Convert(varchar(30), Convert(numeric(20, 1), phone))))
END
ELSE
BEGIN
UPDATE dbo.prProjectDiallingList_staging
SET sPhone = phone
END

--2. Remove quotes
UPDATE dbo.prProjectDiallingList_staging
SET sphone = REPLACE(sphone,'"' , '')

--3. Remove decimal, comma, dashes, parenthesis
UPDATE dbo.prProjectDiallingList_staging
SET sphone = replace(replace(replace(replace(replace(replace(sphone,'.',''),',','' ),'-',''), ' ',''), '(', ''), ')', '')

--4. Update failed Validation column if not 10 digits
UPDATE dbo.prProjectDiallingList_staging
SET sFailedValidation = 'X'
WHERE(Len(RTrim(LTrim(sPhone))) <> 10)

--5. Dedup
UPDATE a
SET a.sFailedValidation = 'X'
FROM dbo.prProjectDiallingList_staging a (nolock)
INNER JOIN dbo.prProjectDiallingList_staging b
ON a.sPhone= b.sPhone
WHERE(a.iList_StagingID > b.iList_StagingID)

--6. Update failed Validation column if not numeric
UPDATE dbo.prProjectDiallingList_staging
SET sFailedValidation = 'X'
WHERE(IsNumeric(RTrim(LTrim(sPhone))) = 0)

--7. Update time zones
UPDATE s
SET s.sTimeZone =z.sTimeZone
FROM dbo.prProjectDiallingList_staging s (nolock)
LEFT OUTER JOIN dbo.prPhoneTimeZone z
ON left(rtrim(ltrim(s.sphone)),3) = z.sPhoneAreaCode

--8. Insert into dialing table only records that have not failed the validation
INSERT dbo.prProjectDiallingList(iPrProjectId, sPhoneNumber, sTimeZone)
SELECT @sProjectId,sPhone, sTimeZone
FROM dbo.prProjectDiallingList_staging
WHERE ISNULL(sFailedValidation,'1') = '1'

UPDATE d
SET d.bProcessReporting = 1
FROM dbo.prProjectDialling d
WHERE d.iPrProjectId = @sProjectId
END
[/code]

When I execute this stored proc it runs for more than 5 minutes. Is there anything i can do to speed it up? Maybe there is a faster way of writing these queries?

Thanks,

Ninel

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Jul 21, 2001

Is there any way to measure the progress of a long running query,
for instance, to find where in a query plan a query is in SQL 7.0?

I have a query I am running that is currently 2 1/2 hours into the
query. Since it's joining three large tables, one with 42 million rows
and two with 7 million rows, I'm expecting the query to take a
while. However, I have no way of estimating exactly how long
it will take. Before I ran it, I optimized it the best I could in
Query Analyzer using an estimated query plan, making sure I had
all the right indexes, etc. I've been trying to use the estimated cost
to project query time, but that hasn't been working since queries
with similar costs can take radically different amounts of time to
execute.

Now I'm sitting here waiting, wondering if the query is just taking
too long, and I should stop it and work on optimizing it some more
(since I will have to run a couple more queries like it), or let it
finish. But I have no clue how close it is to finishing. I've tried looking
at the Physical I/O given by sp_who2 and then trying to calculate the
number of pages it would have to read if it had to read everything
from disk, then estimating it's progress by that, but this seems dubious
at best, since I don't know a whole slew of factors (ie: how many
pages are being read from the cache, is my page calculation correct,
etc).

So, does anyone know of any way to figure out how soon a long
running query will finish in SQL 7.0?

Thanks.

--
Trevor Lohrbeer
trevor@truepeers.com

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Jul 20, 2005

I can't seem to find a step-by-step guide to how to detect orcontinuously monitor for long-running queries that is suitablefor a comparative SQL Server novice. I know that it is possibleto monitor for such with other database products - can anyoneenlighten me as to how this is done with SQL Server? Ideally,I'd like to snapshot running queries (preferably with querytext) at a particular instant via a script, although any helpto show what queries are running at an instant will be muchappreciated. Any ideas?__________________________________________________ ___________Are you Catholic ?http://www.CatholicEmail.com100s of FREE email addresses --->http://www.UltimateEmail.comSend an Online Greeting Card http://www.UltimateEcards.com

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Feb 22, 2001

We have just implemented our new app and I need to improve performance. We are the victims of not having a very adequate stress testing tool prior to launch. Is there an easy way to track all queries or stored procs longer than a specified time?

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Feb 26, 2001

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SP: Execute Long-running Queries In Small Chunks

May 7, 2002

Here's a little SP to break up those long-running, massively-locking, bring-app-to-a-halt queries. By default it does 500 rows at a time and allows for a maximum SQL query size of 4000 characters; it should be trivial to adjust those.

Cheers
-b


CREATE PROCEDURE p_BatchExecute (@vcSQL varchar(4000)) AS
set nocount on
DECLARE @iRows int
select @iRows=1
SET ROWCOUNT 500
WHILE @iRows>0
BEGIN
print 'Executing batch of 500...'
exec (@vcSQL)
set @iRows=@@ROWCOUNT
END
GO

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Hi,

My company told me to prepare document on long runnings queries.

We have components and developed in vb6 and some methods are doing call to as400,db2,informix.

Here I am can not know how tackle and do reaserch on the same.

Question infront me as:
1. why timeout not happen on com+ components.
2. how to prepair document for my reaserch.

Thanks,
Bimal

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May 21, 2008

A few pointers would be appreciated.

I am looking at building multiple SSIS packages. There will be some similarities. Flexibility is of highest importance. The main packages will need to connect to SQL Server1 as a source and SQL Server2 as a destination to transfer over dimenion data from multiple databases. (other SSIS packages may need to use SQL Server2 as a source and SQL Server1 as a destination)

For a single dimension table containing column dim_id on the target server (SQLServer2). I need to pass the results of the following SQL and insert into SQLServer2.database.dim_table

select dim.id
from SQLServer1.database08.dim_table
union
select dim.id
from SQLServer1.database07.dim_table
union
select dim.id
from SQLServer1.database06.dim_table


Now next year the names of the databases on SQLServer1 will be database09,database08,database07!

Now so far my best thought is creating views in my destination SQL Server. So I need some way of dropping and recreating the views. Previously in DTS I would expect to see SQL Server connection that I could use as source and destination. Now I can see SQL Server destination but not source? Also How do I just use SSIS to run some SQL. i.e execute a stored procedure, drop and creat views?

Many thanks,
Ells
p.s Flexibility is the key, in the last three months all the ip and server names have changed more than once so need to be as flexible as possible.

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Edit:

Disregard; I had to wait for a full 15 minutes! :O

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May 23, 2008

All -

I am using SQL Server 2005 and I have an endpoint that exposes some stored procedures as web-methods in the endpoint.

One particular stored procedure I have exposed takes a long time to execute: about 10 - 15 minutes. While, it is OK, that this stored procedure takes this long, it is not desirable for the HTTP Request that executed this proc to not wait for that long.

What I want to be able to do is to call the stored procedure and have the call return immidetaly but the stored proc continues what its doing. I will call another stored proc at a later time to retrive the result of the first stored proc. The first proc will store its results in a temp table. I am thinking of using SQL Server Service Broker to achieve this.

Is there a better a way to achieve this? And how does SQL Server process the Service Broker requests, i.e., I dont want the query to be executed when the server is busy. Are there any hints that I need to give to Service Broker to be able to do this?

Thanks.

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Jul 17, 2006

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(ReferenceRoy Carlson's article for the idea.)This script generates a web page which shows long-running queries with thecurrently-executing SQL command, full SQL text, and .sqlplan files. The fullSQL query text and the sqlplan file are output to files in your tempdirectory. If you have SQL Management Studio installed on the localcomputer, you should be able to open the .sqlplan to see the query plan ofthe whole batch for any statement.'LongestRunningQueries.vbs'By Aaron W. 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Sep 10, 2007



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

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Nov 22, 2007

Hi all,

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PROCEDURE NAME IS SPTOPTWENTYUSERS

SELECT TOP 20 STRUSERNAME,SUM(INTBYTESRECVD) AS INTDOWNLOAD FROM TBLISAWEBLOGS
WHERE DTELOGDATE BETWEEN @BEGINDATE AND @ENDDATE
GROUP BY STRUSERNAME
ORDER BY INTDOWNLOAD DESC

The code that runs it is as follows:

sSQLString = SPTOPTWENTYUSERS
Using cnn As New SqlConnection(GetPath)
Try
Dim cmd As New SqlCommand(sSQLString, cnn)
Dim dr As SqlDataReader

With cmd
.CommandType = CommandType.StoredProcedure
.CommandTimeout = 0
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.Parameters.Add("@ENDDATE", SqlDbType.DateTime)
.Parameters("@BEGINDATE").Value = dtpStartDate.Value
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End With
cnn.Open()
dr = cmd.ExecuteReader

Any help on why this happens would be much appreciated.

thanks

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If i do this, will either of these require a system reboot ?
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Thanks in advance
P

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Bye,
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thank you.
regards,
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Code is below and the execution plan is attached.
Server Version: 12.0.2342.0
Enterprise: 64bit

;WITH BuildTable
AS ( SELECT [GEGTH].[ID]
, [GEGTH].[Changed By]
, CAST( [dbo].[GetWeekStarting] ([GEGTH].[Changed Date] , 2 ) AS DATE) AS WeekOf
, [GEGT].[Title]

[code]....

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Hi:

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How can expediate my query execution process.

Environment details

Database: MS Sql Server 64bit 2005
MS Sql jar file: sqljdbc_1.2.jar
OS: Windows both server and client.

Connect String in java code:

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Regards
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use MyDatabase

GO

select db_name(database_id) as 'Database', o.name as 'Table',

s.index_id, index_type_desc, alloc_unit_type_desc, index_level, i.name as 'Index Name',

avg_fragmentation_in_percent, fragment_count, avg_fragment_size_in_pages,

page_count, avg_page_space_used_in_percent, record_count,

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order by avg_fragmentation_in_percent desc

--order by avg_fragment_size_in_pages desc

--order by page_count desc

--order by record_count desc

--order by avg_record_size_in_bytes desc

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Restore Taking Very Long Time

May 31, 2007

i have sql 2000 db of about 120 GB. its taking about 10 -12 hours to restore on the same disk as new database.



server configuration is good.



when i try to restore another db of about 10 GB size, its restoring in about 5 minutes.

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Why Insert Takes A Long Time?

Apr 7, 2008

Hi,

It seems inserting records takes a relatively long time. My guess is it needs time to allocate disk space for the extra space needed. Assuming this is true, are there any DB settings that allow auto space allocation in bigger chunk? I am looking for something like "DB growth factor" or " Table growth factor"

Thanks for any info.

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