SQLExpress Memory Limitations && Aspnet_wp.exe
Jul 24, 2007
Does the aspnet_wp.exe get considered in memory limitations for SQL Express? (1GB limit) I'm asking because I run the Reporting Services on the same box (this is required with SQLE). When I run reports, it seems much of the work is in the aspnet_wp.exe process, so I'm trying to determine if running reports will get considered in the 1GB memory limit of SQLE. I know, however, that the ReportServer database and the ReportServerTempDB database WILL get included in the 1GB limit, but am trying to figure out if the aspnet_wp.exe process gets considered as well when it is running reports.
Thanks,
Michael
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Nov 11, 2014
Just been reading up on this and there are a lot of limitation which one needs to consider when designing an in-memory table. I'm going to post them below in the hope that others will add to them so I can get a definitive list;
No foreign key constraints
No clustered indexes
No schema changes once the table is set in memory
No index changes once the table is set in memory
Alter Table function is not supported
Additional filegroup needs to be created in order to process in-memory tables
Varchar MAX is not supported
XML/User Defined data types are not supported
Max page length is 8060 (page overflow not supported)
Can't create indexes on NULLABLE columns
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Mar 9, 2006
Hi all,I have recently implemented a SQL 2005 cluster using SQL 2005 Standardon Windows 2003 Enterprise edition.Both nodes have 4GB of RAM and according to the datasheet, SQL 2005Standard can support the OS maximum memory amount and Win2K3 EntEdition can support 64GB!However, in Enterprise Manager, if I go to the "Memory" tab of theinstance properties I can't increase the memory beyond 2147483647(which I assume is around 2GB).I don't have AWE enabled but am unsure as to the ramifications of this.Any advice anyone could provide would be greatly appreciated.Many thanks,Ian
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Jul 18, 2007
Hello,
I am aware that SQL Express has a memory limitation of 1GB. I am trying to determine if this 1GB memory is shared with the Report Server. In other words, if I run a query that requires 600MB of memory, and a report that pushes the Report Server to 600MB of memory, will I exceed the 1GB limit for SQL Express? Or are these two separate processes for memory limitation purposes?
If they are separate processes, are there any limitations to the Report Server as far as performance when using the Express edition of SSRS? If not, would it not make sense to push the Report Server harder than the database when running reports if SQL Express is my target platform? (e.g., do MORE work in the RS, and less in the database itself)
Thanks,
Michael
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Jul 8, 2006
SQL Express Ed is limited to one CPU, what happens if the CPU is a dual core CPU? Does SQL Express care? Does it see a dual core as a single CPU?
As for memory, stupid question, SQL Express is limited to 1 GB RAM, if I run it on a server with say 4GB of ram packed into it, will it affect SQL Express' performance? Will SQL Express even run if there is more than 1GB available? Or will SQL Express simply ignore the extra RAM with no negative consequences?
Thanks,
Andy
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Apr 17, 2006
Is there some way to limit the amount of memmory grabbed by SQLEXPRESS as there is with SQL 2000? TaskManager shows it taking 1.4 gig on my server. 2 gig total memory in the machine. I'd like to limit it to someting less.
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Mar 2, 2007
I have an application which is providing printing facility using a custom hardware interface device.
Whenever a print is required user punches in his ID number into the hardware device, and hence an underlying application gets the event and it calls a managed DLL, which inturn calls the Reporting services webservice on the same server. Problem starts after some days (typically after 2 -3 days), when the server response becomes slow and the aspnet_wp.exe restarts every now and then and after this sequence of happening, finally it crashes with some event in application in event log which reads:
The server was unable to allocate from the system nonpaged
pool because the pool was empty.
Also many times the applications log file reads :
There is an error in XML document (1, 948).
I think this error starts when the aspnet_wp.exe is restarting, but I am not sure.
The server operating system is Windows 2000 SP-4, MS SQL Server 2000 Standard Edition SP-4, MS Reporting Services 2000 Standard SP-2 with .Net Framework v1.1
The Server is running many applications apart from the ones listed above and there is a moderate usage of TCP/IP sockets for communicating with certain hardware devices.
Please help me out!
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Jun 22, 2006
Hey everyone.
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Mar 13, 2007
I can't start SQLEXPRESS.
The SQL ERRORLOG shows: Error is 3414, Severity 21, State 2 and says: "An error occurred during recovery, preventing the database 'model' (database ID 3) from restarting." Just prior to this, I get a warning: "did not see LP_CKPT_END".
Any thoughts why this might be and how I can fix this?
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Sep 21, 2006
hiya,
I have sqlExpress and sqlServerManagementStudio on my XP pro box.
Will the installation of sqlExpress (Advanced Services) cause any problems?IS thereanything that I shold be aware of in advance?
many thanks,
yogi
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Jan 19, 2007
Hi All,
I have created an installation application which will install the application with SQL Express and .NET Framework 2.0.
If i install this application in a Fresh system(i.e which is not having SQL Express), it is installing the application with new database instance successfully.
But if i try to install the same in a system which is already having SQL Express, throwing "Object reference exception" because it is not able to create the new database instance.
Can anybody help me out .
Regards,
Doppalapudi.
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Mar 21, 2006
Because of numerous problems trying to get sqlexpress working, I uninstalled it with the intention of reinstalling (via Add or Remove Programs). However, now when I try to reinstall it, I get a message that the I am not making a changes so it won't let me install it.
I do have sql server 2005 developer's edition installed; is that the reason? and does that mean I cannot have both installed on the same machine?
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Jul 1, 2006
Hi All,I've been struggling with this for hours...Could someone please advise me on how to convert my current File based SQL Server Express website to a Server based SQL Express one.Particularly interested in what I need to do in the SQL Express management tool, changes I need to make the projecvt itself and changes needed to get IIS to understand things have been changed.Thanks,Martin.
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Jul 13, 2015
I am looking to test this feature - and the "Transaction Performance Collector" has recommended me a table to port to In-Memory OLTP.
I have now tried the "Table Memory Optimization Advisor" tool.
After a couple of tweaks to the table design - the tool is now passing validation but the tool is not allowing to progress to the next step:
Could it be down to not having enough memory? But would this not show in the advisor?
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Sep 28, 2007
Hello. I have received the follwoing error upon an attempt to Browse the Cube. All other tabs are functional, including the Calculations tab. We are running Windows Server 2003 SP2 and SQL Server 2005 SP2. Any suggestions would be greatly appreciated!
**EDIT** - Have confirmed SP1 for VS2005 is installed both locally and on server, also.
Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Microsoft Visual Studio)
------------------------------
Program Location:
at Microsoft.Office.Interop.Owc11.PivotView.get_FieldSets()
at Microsoft.AnalysisServices.Controls.PivotTableFontAdjustor.TransformFonts(Font font)
at Microsoft.AnalysisServices.Browse.CubeBrowser.UpdatePivotTable(Boolean translate)
at Microsoft.AnalysisServices.Browse.CubeBrowser.UpdateAll(Boolean translate)
at Microsoft.AnalysisServices.Browse.CubeBrowser.InitialUpdate()
at Microsoft.AnalysisServices.Browse.CubeBrowser.SupportFunctionWhichCanFail(FunctionWhichCanFail function)
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Oct 11, 2007
I've been researching AWE to determine if we should enable this for our environment.
Currently we have a quad core box with 4 gb of RAM (VMware). OS: Windows 2003 std, SQL Server 2005 std. 3GB is not set but will be as soon as we can perform maintenance on the server.
I have read mixed feedback on AWE, either it works great or grinds you to a hault. I would assume that the grinding to a hault is due to not setting the min/max values correctly or not enabling the lock page in memory setting.
We only have one instance of SQL on the server and this box won't be used for anything else aside from hosting SQL services. We do plan on running SSRS off of this server as well.
1. Will running SSRS and enabling AWE cause me problems? Will I have to reduce the max setting by the SSRS memory usage or will it share and play nice?
2. How do I go about setting the Max value? Should it be less than the physical RAM in the box? Right now its set to the default of 214748364, even if I don't enable AWE should this default value be changed?
3. It seems that even at idle the SQL server holds a lot of memory and the page file grows. If I restart the process in the morning, memory usage in taskmon is at 600mb or so. By the end of the day, its up around 2gb. How can I track down whats causing this, should this even concern me?
4. The lock Page in memory setting worries me. Everything I've read on this seems to give a warning about serious OS and other program support degradation. In some cases to the point where they have to restore the settings on the server before they can bring it back up. What are your thoughts on this.
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Feb 27, 2006
I'm new to SQL so don't laugh if this is easy to spot but I'm having trouble with a select statement but I do not think it's the syntax etc, I'm convinced it must be due to some restrictions and limitations within SQL.
Could anyone shed some light? I've been 'googling' for two days now and can't find anything, much appreciated! thanks.
SELECT a.medno_id,
tblAction.action_shortdesc,
tblClassification.class_shortdesc,
tblType.type_shortdesc,
tblUnit.unit_shortdesc,
tblSystem.system_shortdesc,
a.med_oldserial,
a.med_builddate,
tblLibrary.lib_shortdesc,
a.med_f24bookno,
a.med_f24entry,
a.med_f102bookno,
a.med_f102entry,
tblTransport.trans_shortdesc,
a.med_courierno,
tblPOC.poc_surname,
a.med_title,
a.med_notes
FROM tblMedia a
INNER JOIN tblAction ON a.action_id = tblAction.action_id
INNER JOIN tblClassification ON a.class_id = tblClassification.class_id
INNER JOIN tblType ON a.type_id = tblType.type_id
INNER JOIN tblUnit ON a.unit_id = tblUnit.unit_id
INNER JOIN tblSystem ON a.system_id = tblSystem.system_id
INNER JOIN tblLibrary ON a.lib_id = tblLibrary.lib_id
INNER JOIN tblTransport ON a.trans_id = tblTransport.trans_id
INNER JOIN tblPOC ON a.poc_id = tblPOC.poc_id
WHERE a.medno_id = 327
ORDER BY a.med_effdate
I've spaced out the query so it's easy to read
I've started the query from scratch building my SQL adding one field at a time and it works perfect until it reaches a certain number of fields, it's as if SQL has a limit to no of fields it can return/be used in the select part of the statement. Are there any limitations I should know about? or am I being an idiot and doing something I shouldn't?
Hope this makes sense, thanks!
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May 11, 2006
What are the limitations of the SQL 2005 Express Management Studio tools, as opposed to the full blown 2k5 Tools (i'm not referring to the Server, just the tools). I ask because the install for the 2005 Management Studio Tools alone is 878 megs.
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Feb 27, 2008
Hi.
I've been using CE 3.1 in a .NET/C# application. My knowledge of database technology is very basic, and I'm wondering how far I can take my application with CE, given its limitations, which I stumbled across when I read the following about VistaDB: http://www.vistadb.net/compare_sql_compact.asp
For right now, my application uses a CE database as a fancy log file. There are only two tables in the database -- one to hold the log information, and one to hold information about different "runs" of my application. The only time a row is ever updated is when a row in the latter table is updated (once) to indicate that that "run" has completed. Other than that, I only add and delete rows.
Right now, two different processes on the same CPU (the same CPU as the database) write rows to the database during a run of my application. They do this by accessing a singleton object, hosted in a Windows service, via .NET remoting. One of these processes also polls the database continually to read it for display purposes.
So. My questions are:
I can live with the single-user limitation, given my application. But what exactly is it about using CE that limits me to a single user? I never actually specify user information, as far as I know. Am I missing it?
Can I assume that the "single CPU supported" limitation simply means that it only runs on a 32-bit Windows machine, and that it has nothing to do with multiple databases running on different CPUs at runtime?
Why is it that the two processes in my application seem to be able to connect to my database concurrently, when this is apparently a limitation?
As I said, my knowledge of this technology is quite elemental. Forgive me. But I figure I'm in the right place to change that. :-)
Thanks.
Mike
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Aug 28, 2015
I have a Windows sever 2012 with sql server 2012 enterprise. Ram size is 22GB. Sometimes SQL sever takes 95% memory.My question, How to reduce memory size without killing any process because it's production server.So there are many background process is running. And,Is there any guides to learn why Memory is raise d so high and how to reduce it.
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Nov 15, 2007
I am receiving an error message while using the System.Transactions.TransactionScope class. The error message that I am receiving is "Communication with the underlying transaction manager has failed". This error seems to only appear when I have my web application one server, Server1, and my database on a second, Server2. When I run the web app on the same server as the database (i.e., web site and database on Server2), I don't receive this error. So, this leads me to believe this has something to do with MS DTC. Is there a limit to how much data MS DTC can manage for a given transaction? If so, is it configurable? When I run my code, the application fails after a certain number of steps (this is repeatable). See sample code below. When I execute the code below, the error occurs on UpdateBody2();. If I comment out UpdateBody2(), the error will now occur on UpdateBody3();, and so on. This leads me to believe that I have hit some upper limit. My code follows a pattern similar to this:using {TransactionScope scope = new TransactionScope()){ UpdateHeader(); UpdateBody1(); UpdateBody2(); UpdateBody3(); UpdateFooter();}Where each of the classes follows a pattern of:UpdateHeader(){ using (SqlConnection conn = new SqlConnection()) { conn.Open(); // Do something conn.Close(); } } Environment:ASP.NET 2.0SQL/2005 StandardWindows Server 2003 Thanks.Steve
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Jun 22, 2004
I'd like to use MSDE since it's free instead of SQL Server for my database. I will be hosting a portal type site. If all goes well and my site is wildly successful are there any limitations in MSDE that I need to worry about?
For instance, I thought there was a limit to the number of connections. I thought I remember seeing 5 or 50 on the microsoft download site.
If there is a connection limit of say 10, what happens when connection 11 comes in? Does it just wait for a free connection or does it fail?
Is anyone using is as the database on a large portal site? How many users are there in total? How many connected at the same time?
I am under the assumption that it is SQL Server underneath, so I assume the performance and abilities are very good. Is this a fair assumption?
Thanks for the input
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Jun 6, 2006
Hi, I was curious if anyone knew if there was a way to get around SQL Express Edition 2005's limitations to support remote connections. If I install SQL Server 2005, will there be a smooth transition between the two on my IIS 5.1 server? My database is extremely simple and only consists of a single table without any complex queries. Idealy, I would like to spend no money since I am a poor collge student doing this as a project. Suggestions?
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Jan 20, 1999
Does anyone know the limitations of access in records?
CZ
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May 18, 2004
I updated a varchar field fom 500 length to 800 and now nothing works. Are there limitations to how big a varchar table entry can be and if so what is the alternative?
Cheers
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Aug 2, 2006
Hi all there,I'm a newbee to this forum. I've a question, is there any limitationon "IN" clause in select query.for example :"SELECT EMP_ID, EMP_NAME FROM EMPLOYEE WHERE EMP_ID IN('EMP1001','EMP1002','EMP1003', etc, etc, so on)".I've read at some documentation that there is a limitation for Columnsin a table and i.e. we can have only 1024 columns per table, is thistrue?Plz help me !!Thanx in advance.Kind Regards,Harry
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Nov 29, 2006
Hi,
What are the limitations of using the automated conversion tool and how to deal with compatability issues?
Thanks
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Dec 12, 2007
Is it possible someone could let me know the exact differences between the SSMS Express Edition and SSMS Standard Edition?
Just simply what you cannot do in the Express edition but can in the full edition.
Thanks
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Oct 3, 2006
Hi,
I'm thinking about using the FTP task in an integration i am developing, but before i do, i need to get an idea that what i want to do is possible.
With the FTP task could i get a list of directories on the FTP server, and compare the folders with a result set returned from a SQL query. If any of the directories on the FTP site then i want to download each of the relevent directories and there contents to the local machine.
Could someone give me an idea as to if this is possible via the task, or if indeed a script task would be better?
Many thanks,
Grant
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May 12, 2006
I had a question about the CPU limitations of SQL express. It says limited to 1 CPU but what if I have multiple instaces since the application is a new service and runs in it 'sown memory space how is it limited to 1 CPU? does the service use multiple processors and the queris are binded to one?
Thanks
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Mar 10, 2008
With the limitation of 1Gb of ram and 1 CPU for SQL Express, does that mean we cannot load it on a server with multiple CPU's and more ram, or that we can load it and it will only use 1CPU and 1Gb of ram?
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Feb 10, 2006
can sqlExpress handle 200 users all at the same time?
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Jul 9, 2006
Hi,
As SQL Server XE can run on one PC maximum, does it mean that it can't support multi users??? I mean could it be installed on one server and to be used by multiple users connected to server with their PCs?
thanks in advance
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