Problem With Performance After Leaving SQL Server Express Idle For Some Time
Feb 13, 2007
Hi, everyone!
I have this strange problem... After every time my application leaves sql-server idle (doesn't send anything, doesn't retrieve anything) next command to sql-server processes really long.
I've also noticed this bug/feature/misconfiguration even if I open a DB in Management Studio...
Please, could someone tell me, is there any timer that "puts a DB to sleep" if no one is using it for some time? Can I change the way server behaves in this situation?
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Jan 29, 2008
Hello everybody,I have a ASP.NET (3.5) Web site which uses an data connection to my Sql Server 2005 Express. When I browse in my data-driven pages of my website, I am satisfied with the performance. But when I try my website after a long break, e.g. in the morning, the data-driven pages take a long time to come up, about 10 seconds. After this gap, when surfing on the other pages, there is no problem. It is only the first page. So it seems that my SQL Server goes "to sleep" after a certain time of idle.First I read a post about this problem which came up with the user instances of Sql Server. So I got rid of my user instance and set up my database "normally". But still I have that performance gap.I am using Linq To SQL and a couple of ListViews. I am totally confused how to manage this problem.Any suggestions?Thanks in advance,Hannes
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Dec 7, 2007
I am using MS JDBC driver 2005 1.2 and in-house written connection pooling that was working fine for a number of years. This combination worked OK with SQLserver 2000. But recently we switched to SQLServer 2005 (x64) on WIN Server 2003 Standard x64 eddition. Everything seems work OK during business hours, however, after business hours when there are lesser users and connection stays idle for sometime, I am getting the following error:
com.microsoft.sqlserver.jdbc.SQLServerException: The connection is closed.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.checkClosed(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.setAutoCommit(Unknown Source)
at com.nms.serverframework.dbaccess.OnlineTransactionManager.freeConnection(OnlineTransactionManager.java:420)
at com.nms.serverframework.dbaccess.OnlineTransactionManager.releaseConnection(OnlineTransactionManager.java:707)
at com.nms.serverframework.dbaccess.OnlineTransactionManager.releaseConnection(OnlineTransactionManager.java:688)
at com.nms.serverframework.dbaccess.OnlineTransactionManager.finalize(OnlineTransactionManager.java:399)
at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:83)
at java.lang.ref.Finalizer.access$100(Finalizer.java:14)
Any help would be appreciated
thanks in advance
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Feb 10, 2007
I've noticed that after the database have been idle for some time, it takes up to 10 seconds to get it started when something needs to access it. In the event viewer it says that the database <name> have been started.
Obviously, there is some idle timeout setting.
I saw an option in the database properties that is called "Auto Close" which is set to true. I assume this is what i'm looking for. Can someone confirm that? (it could take some time to test myself...)
But what i'm actually wondering is:
1. Is it possible to adjust how long it would wait before timing out?
2. What advantages does closing the database bring? Does it free up (a noticeable amount of) ressources? Or is it only that it's unlocking the files, so that it's possible to copy the database source files?
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Feb 20, 2007
Just upgraded to SQL Express 2005 from MSDE for Firehouse. Upgrade went great and the db is accessable and running fine. Except when not used for a while. Then I need to restart the db to allow connections of any kind. If I don't I get an error that the db is not accessable and I can't connect. Everything runs fine after until it goes to "sleep" on me again. We upgraded to make use of the 4GB limit as we were at 1.9GB and MSDE was getting a little unhappy.
Any suggestions? Is this a "feature" and if so, is there a script I can run to kick it into working mode again?
Thanks
Chris
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Sep 12, 2004
1. Use mssql server agent service to take the schedule
2. Use a .NET windows service with timers to call SqlClientConnection
above, which way would be faster and get a better performance?
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Jun 24, 2007
I am new to this type of programming and and have read all articles on adding an image to the database and it seems they all use sql queries to add an image but I want to add an image at design time. I am using Visual Basic 2005. I am also using Visual Basic 2005 Express Edition to try the same thing. I am trying to build a Translator program for english to Brazilian Portuguese and the reason I want to add the images is so that when I translate the word cat from english to Portuguese, I can also show an image of a cat. Can anyone please help me
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Feb 21, 2008
Hi all;
I want to implement "Auto disconnection" (or kill) of user session that exceed a specified idle duration in SQL Server 2005.
I know how do that in oracle by creating a profile and set the IDLE_TIME paramter and asign that profile to all users. But in SQL Server i don't know how to do it.
Can anyone help me.
Kindly
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Oct 21, 1999
Hello:
We have a new sales force automation application for sales rep to log their contacts, etc. It runs on mssql 6.5, sp 4.
They log in and leave their connections on without logging off or leave their coonections idle .
We set the user connections fiarly high but we are concerned that the max amount of user connections weill be consumed and the sql serve becomes locked.
My questions are:
1) Is there any parameter in the sql server configuration that will log off idle users have a certain time and dsiconnect them?
2) A backup of the database will be made each night. If there is no parameter, would it be a good idea to stop and start the sql server every night to release the idle connections?
3) If so, how to stop sql server from the commadn and start it with a command line command and do this in a batch file as a scheduled task?
4) Is there any other way to release these idle connections each night?
Any information you can supply will be appreciated. THanks.
David Spaisman
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Nov 8, 2000
I upgraded from SQL 6.5 to 7.0. Because I got a number of errors I went back
to 6.5. Now I want to try again to upgrade to 7.0. How can I do that?
Do I have to uninstall 7.0 and reinstall?
If I uninstall 7.0 will that blow away 6.5?
Thanks
JJ
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Feb 20, 2008
Hi,
I have a database which has two db_owner (dbo and a user).
The user has left the organization a while ago.
Can I remove him or do I need to replace him?
What will happen if I remove him?
Do I need to keep dbo there also?
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Feb 25, 2008
Wondering if anyone has any experience with SQL Server Express Edition (SSEXP). We're looking at a mobile sales force type model, so a local database on a laptop with no real time network connection. So the users would collect data locally, then connect up to the network every few days to replicate the data to a central server.
So questions.. Has anyone tried anything similar? How stable/mature is SSEXP? Any other thoughts, alternatives or gotchas anyone can think of?
Thanks for the input.
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Nov 14, 2007
Hi,
I have upsized my access database to Mssql 2005 and I notice that SQL 2005 is much slower in data access than the access databse.
Is there something that needs to be done after the upsize? Have I missed something?
If you want to compare the dataabses here are the links:
Access: http://ozeldersverenler.net/beta/www
SQL2005: http://ozeldersverenler.net/alpha/www
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Nov 14, 2000
I would like to dynamically copy a table in Transact SQL, like this:
SELECT * into NEW_TABLE from MY_TABLE where 1 = 2
This creates an empty NEW_TABLE as desired. However, NEW_TABLE retains the column nullability of MY_TABLE; I would like NEW_TABLE to have all its columns nullable.
I tried to write Transact SQL logic to update the isnullable column in syscolumns for NEW_TABLE, but was told that the entire SQL Server would have to be reconfigured to allow this.
Does anyone know of another way to do this?
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May 31, 2007
I've got a service that waits for a file to drop and then calls a ssis package that then gets a date from the first line of the file, sets it to a variable, then imports the rest of the file using the flat file import through a data flow task.
Occasionally the script task fails with this error message:
The script threw an exception: Access to the path 'C:pathflatfile.txt' is denied.
Here is the code of my script:
Public Sub Main() ' ' Add your code here ' Dim vars As Variables Dts.VariableDispenser.LockOneForRead("User::FullFilePath", vars) Dim filepath As String = vars("FullFilePath").Value.ToString() vars.Unlock() Dim file As File Dim reader As StreamReader reader = file.OpenText(filepath) Dim line As String line = reader.ReadLine() reader.Close() 'MsgBox(line.Substring(29)) Dim asofdate As String asofdate = line.Substring(29, 5) asofdate = asofdate + "20" + line.Substring(34) 'MsgBox(asofdate) Dim writeVars As Variables Dts.VariableDispenser.LockOneForWrite("User::AsOfDate", writeVars) writeVars(0).Value = asofdate 'MsgBox("done") writeVars.Unlock() Dts.TaskResult = Dts.Results.Success End Sub
Does anyone see anything that I'm not. I believe i'm closing all necessary resources and streams. Does anyone have suggestions.
Thank you very much in advance.
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Oct 4, 2007
Hi folks. Thanks for the opportunity to get a bit of help here.
I've got two tables. Say, table "foo" and table "bar".
I LEFT JOIN them on a key, say, foo.id and bar.fooid.
For some reason, when I do this join, I get only records from "foo" which have a mate in "bar".
What I really need is all records from "foo", but the columns from bar when there is a match. I don't want to exclude records from "foo" just because they don't have a match from "bar".
Am I just misusing LEFT JOIN?
Any guidance would be greatly appreciated.
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Dec 18, 2005
I am using Visual Web Developer 2005 Express Edition & SQL Server 2005 Express Edition.
In a database that is role-manager-enabled, you will have some tables like apsnet_Users, aspnet_Roles, etc.
And some Columns like CreatedDate, LastLoginDate in the tables.
My problem:
The datatime values in the aforementioned fields are updated based on GMT instead of the client's local time zone.
Is this the way it is?
No matter true or not, how to fix it?
Many Thanks in advance :)
Jey Leong
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Jun 15, 2005
In MSDE sql server 2000 dtsrun was available to execute the dts packages but now with sql server 2005 express edition integration service is not part of express/workgroup edition and the dtsexec run time is also not available.
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Jan 13, 2007
Here is the situation:
I have SQL server express 2005 installed on my pc as instance SQLEXPRESS.
I have created a Visual Basic applicaion with the following as connection to the SQL server express 2005 running on the same PC:
****************************************************************************************************
Dim lconnectionString As String Dim builder As New SqlConnectionStringBuilder Dim cmd As New SqlCommand Dim reader As SqlDataReader Dim parameter As SqlParameter builder("Data Source") = ".SQLEXPRESS" builder("Initial Catalog") = "" builder("AttachDbFilename") = "C:My DocumentsVisual Studio 2005Projectsabcabcabc.mdf" builder("Integrated Security") = True builder("User Instance") = True lconnectionString = builder.ConnectionString Dim sqlConnection1 As New SqlConnection(lconnectionString) cmd.CommandText = "SP_add_collection" cmd.CommandType = CommandType.StoredProcedure cmd.Connection = sqlConnection1 sqlConnection1.Open()
*******************************************************************************************************************
It seems that i can not connect to the abc.mdf in SSMSE while the VB program is running. (ERROR:
Database 'C:My DocumentsVisual Studio 2005Projectsabcabcabc.mdf' cannot be opened due to inaccessible files or insufficient memory or disk space. See the SQL Server errorlog for details. (.Net SqlClient Data Provider) )
If i connect to the abc.mdf first in SSMSE, then run the VB program afterwards, it gives me the error on this line -- sqlConnection1.Open()
I want to be able to access the abc.mdf database with both SSMSE and VB at the same time. Could anyone help me on this ?
Thanks very much !
apple
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Jun 9, 2003
Should these two stats added together give me the time (ms) since SQL Server has been restarted? Maybe I don't understand but @@cpu_busy is the amount of time sql server has accessed the cpu and @@idle is the amount of time sql server has no cpu activity. When I add these two figures together, I don't get the total amount of time (ms) SQL Server has been running. What am I not doing? Any help is appreciated.
Thanks
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Jun 18, 2001
Hi all,
We got this message on our production server event viewer for source MSDTC.
"String message: Session idle timeout over,tearing down the session"..
Even though it is marked as informational, just wanted to know what it is?..
thanks guys,
Marx
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Sep 20, 2007
folks
We have a situation where people just login run complex queries and then just don't shut off their query analyzer of apps.
Some of these chew up a lot of CPU cycles and unless we kill the query the CPU cycles are not released.
I see some of them are idle for over 1-2 hours or more, their last_batch would be at least 2 hours old.
The question is, "Is there a setting in the sql server whereby we can automatically disconnect idle threads?"
Regards
Paresh Motiwala
Boston, USA
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Mar 21, 2006
Is it possible to stop the server from going to sleep when it is idle to improve responsiveness to new connections?
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Aug 21, 2006
I have been seeing this issue for several weeks now. The distribution agent will become idle even though there is activity occurring within the replicated database. If I manually start the distribution agent, it will begin retrieving the transactions. I thought that this might be due to inactivity but I have modified the inactivity threshold and I am not receiving an actual inactive agent warning. There are no warnings -- it simply sits there and does not resume sending transactions.
Any thoughts? This is a transactional replication with a distribution agent that is run at the subscriber.
Thanks,
MV
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Jun 8, 2005
Hi.. I have application which is connected to my SQL 2000 database. Normally our users use Terminal service to the SQL 2000 and application (same box) remotely and connect to the database. But some time the connection break and I have idle login stuck there.
For example, if I use sp_who, I can see many logins still login to DB even they are out. And sometimes I see duplicate logins too even there is only one person using that login to logon to DB. Is there a way to find out what is the idle timeout of the user login session??
Is that under SQL server properties -->remote server connections-->Query time-out--> >> sec ?
Is there a way to limit only 1 session can be allow for each login ??
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Apr 6, 2006
Hi
I have been looking at the new DMV's prefixed with dm_exec_....and found a limitation with them.
Books online says sysprocesses is replaced with sys.dm_exec_connections, sys.dm_exec_requests and sys.dm_exec_sessions. The problem I came accross is identifying any sessions connected to a specific database which were idle. This is the sort of thing you need to know if you tried to restore a database and it says the database is in use.
I wonder if this is a bug or by design?
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Mar 24, 2015
SQL Server 2014 BI
Windows 2008 R2
Every time machine is rebooted performance counters are missing.
select * from sys.dm_os_performance_counters returns no records. I execute "lodctr" command and get it back every time.
I would like to know the route cause of this issue, why it gets removed every time the machine is rebooted.
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May 29, 2008
Depending on the way I write a query, I come up with these 2 stats.
Is there a sure winner in this race, keeping in mind the overall health of the server?
(I'm not sure of the specs of the server, as I can't log on to it :/ but are there any sql variables that would show cpu speed and # of cpus?)
I almost am leaning towards the single cpu query because of lower resources used -
or are most of the "reads" in the parallel'd query not read directly from the HD, but using the Table Spool created internally (query plan shows it)?
CPU Reads Writes Duration
Parallel: 200k 3.2m 2400 62s
Solo: 79k 1.1m 600 79s
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Mar 13, 2008
Does SQLServer go to sleep when it's been idle? How can I connect without an error?
I have SQLExpress on a server. Server Name is SqlExpress. I have 2 DBs on that server... Tuna & Guppy. I'm connecting to the DBs from a remote PC which runs my App... an exe created with Visual Studio 2008, Visual Basic.
If I run my App at say 9:30PM, after the server has been idle for several hours, I get a "Can't open connection to Guppy" error, which is my error message when the connection attempt fails. If I quit & relaunch the app, it connects fine, and will continue connecting fine unless you leave the server idle for serveral hours again.
If I'm developing a 2nd app all evening... which connects to a 2nd DB...Tuna, that activity seems to keep the SqlServer awake and then launching the 1st app at 9:30PM connects to Guppy just fine.
I tried adding a "Connection Timeout=30" to my connection string but that did not help.
My connection code is as follows (note the server's name is SQLExpress):
Dim strConnG As String = "Data Source=SQLEXPRESSSQLEXPRESS;Initial Catalog=Guppy;Integrated Security=True;Connection Timeout=30"
Using ConnG As New SqlConnection(strConnG)
'open Guppy connection
Try
ConnG.Open()
Catch ex As Exception
MsgBox("Can't open connection to guppy")
Return False
End Try
'Code that does stuff
End using
Can anyone tell me how to fix this so I can connect without error, even if the server has been idle?
Thank you,
Joe A
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Mar 28, 2007
Hi all,
Let say I have a machine with 1 CPU and 1 GB RAM, with 5 other client machines (WinXP) connected to this machine. What is the best combination installed in this machine:
1. SQL Express on Windows XP
2. SQL Express on Windows Server 2003
3. SQL Server (Full) on Windows XP
4. SQL Server (Full) on Windows Server 2003.
Someone said that number 1-4 will perform the same, is this true?
I know the answer will be different if the machine has more than 1 CPU or 1 GB RAM, since these are the max limitations of SQL Express. Or the number of clients is quite large, then the obvious choice will be number 3 or 4. Also, for this scenario, lets ignore the fact that SQL Server is (much) more expensive.
So, which one is the most and least efficient/fastest in performance?
Thanks for any input.
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Jul 10, 2007
We have a system based on a central server and several remote servers plus an application that periodically checks if the data in the remote servers are in sync with the central one. This app compares data using a simple query that performs a join between the central and remote server (linked servers) tables
The problem we are experiencing is the following: at system startup we used SQL Standard ed. on all servers and the comparison query took about 100 ms to complete. Now, for $$$ reasons, the remote servers has been moved to express editions and the query took about 1 sec to complete... this means that the query executes about 10 time slower than before.
I've noticed that using mgmt studio and launching a one query or 3 queries in the same script the execution time is almost the same, such as the engine would execute in the same time as before but with some trouble on connecting or passing data...
Any idea to understand what's on ?
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Jul 4, 2006
Hi,
We are processing 60,00, 000 rows(2 GB file) available in a flat file and loading them in to a database tables using OLEDB Destination components. In the data pipeline of an SSIS package we have 1 flat file source reader, 7 look up components(full cache mode), 1 multicast component and 2 OLE DB destinations with fast load option.
We have observed that first 10,00, 000 rows are processed and loaded in to target tables in just 4 minutes time. The second set of 10,00, 000 rows are processed in 15 minutes time. After this for processing each 1,00,000 rows SSIS is taking approximately 8 - 10 minutes time. We are not able to identify the reasons for the unexpected behaviour of SSIS.
We thought that as the input file size is 2 GB SSIS is not able to manage and slowing down over time of execution. We did split the big input file in to 60 small 37 MB (approx) size files. Then we modified the package by adding For-Each loop task to process all the 60 small files and load them in to database server sequentially. Even in this approach also we have identified data loading has slowed down drastically after processing 13 files.
In order to verify is there any problem with reading source file or transformation, we have replaced OLEDB destinations component with Flat File destinations. With Flat file destination the time taken for processing rows is very constant. For every 8 minutes package is able to process 10,00,000 rows and write them in to the destination files. So, there is no problem with the with either Look up components or flat file source reader.
We are sure that target database server is in same state/condition from the starting to the end of package execution. The client box in which we are running the package is having 1 GB RAM. During package execution time the CPU usage is at 30 % and PF usage is 580 MB. SP1 is also installed on both Client and Server.
Does any one have clue what is causing slow down of data load over the time of package execution?
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Aug 25, 2015
I know I should probably be posting this in the RS section but I have a Win 2008 R2 server and RS 2012 along with SSIS and Database server installed. I also have SQL 2005 instance with Sql 2005 SSIS running on the server.
I saw that Reporting services was consuming 9gb of ram a few days ago with no published reports. It's just a default install.
So I investigated the settings and the document: [URL]......
I added this section to the reportserver.config file to restrict memory usage
<WorkingSetMaximum>512000</WorkingSetMaximum>
<WorkingSetMinimum>128000</WorkingSetMinimum>
Any example altering the reportserver.config file in your standard build of sql server reporting services?
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