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• Windows 2008 RemoteAPP client disconnects within a matter of minutes

  - by Jeroen Wilke

  I'm having an odd problem with Windows 2008 TS, and remote applications specifically. The situation is as follows: TS idle timeout is disabled via GPO TS terminating disconnected sessions after 1hr (via GPO) My users can log on to the Terminal server, and get a full desktop, OR via rdp files that give access to a few remote applications. When a user connects to a full desktop, everything is fine and dandy, they will remain logged on indefinately, and when they disconnect the session is terminated after an hour. however, when a user connects using a remote application link, the client seems to disconnect after only a few minutes of inactivity, when you click the window, the session reconnects. EventID's on TS server: 4779: This event is generated when a user disconnects from an existing Terminal Services session, or when a user switches away from an existing destop using Fast User Switching. 4778 : This event is generated when a user reconnects to an existing Terminal Services session, or when a user switches to an existing desktop using Fast User Switching users are connecting directly to 3389, not using a TS-gateway at the moment. This behavior is consistent on different clients that we have, Full desktop is fine, RemoteAPP constantly disconnects. The .rdp file used doesn't list any interesting parameters, aside from what application to launch, and where to find it. Can someone explain to me how there can be a difference in behaviour between full desktop, and remoteapp ? since essentially they use the exact same client ? Regards Jeroen

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• Windows XP SP3 client over NAT to a Windows 2008 R2 SP1 file server disconnection

  - by Patrick Pellegrino

  we just transferred a pilot group from our old(!!) Netware infrastructure to an Microsoft infrastructure. Since then, our users got problems accessing their files. They all experience disconnection from the mapped drives. The file server is access via a WAN connection by a firewall (Sonicwall) between both network and we do NAT. All clients have Windows XP SP3 and the file server is an Windows 2008 R2 SP1. On the file server I got many Event Id 2012. Many post over the Internet suggested a problem between the SMB protocol and NAT. We need a short term fix to continue to transfer users from Netware to Microsoft after what will work to remove the NATing. I found this MS KB http://support.microsoft.com/kb/2444558 that suggested a kind of workaround for Windows 7 clients but I can found anything for Windows XP. Anyone can help me with this ? We don't want to stop the project and do a network job before migrating. Regards. Update: Our few Windows 7 computers doesn't seem to have this issue.

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• SQL 2008 - db mail issue

  - by Chris

  Hello. I have two instances of SQL Server 2008. One was upgraded from SQL Server 2000 and one was a clean, new install. The instances are running on different nodes of the same cluster, although I have tried having them both on the same node with identical results. SQL Mail operates perfectly on both instances. DB Mail operates perfectly on the newly installed instance. On the upgraded instance, DB Mail does not send any mail. Of course, I am not positive that the fact this instance is upgraded has anything to do with the issue, but it might. The configuration of my db mail profile and account looks identical to my functioning instance. In the configuration of the 'alerts' tab in the SQL Agent properties i have tried selecting both DB Mail and SQL Mail to no avail. Both instances use the same SMTP server with the same authentication (domain with db engine account). All messages sent via sp_send_db mail and those sent via the 'test email' option are visible in the sysmail_allitems queue and remain there as 'unsent'. The send_status eventually changes to 'failed'. The only messages in the sysmail_event_log are 'mail queue stopped by login domain\myuser', 'mail queue started by login domain/myuser' and 'activiation successful.'. selecting from the externalmailqueue has the same number of rows as sysmail_allitems. i have tried bouncing the agent, the entire instance and moving the other functioning instance to the other node in the cluster. any thoughts? thx.

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• Upgrade SQLServer 2008 hardware

  - by John

  Forgive me if I'm not able to be totally clear here. It is not intentional, I'm a senior level developer in a very small company having to act like a manager at the moment. Anyway, the story is that we have 2 older dell servers with SQL Server 2008 Standard in a "cluster". I put that in quotes because I'm still not 100% clear what that means. We have 2 brand new blade servers and want to move the existing databases to the new hardware. Ok, so here is the gotcha. We need to do this with little or no down time. I'm being told that we can evict the passive node, then pull in one of the new servers. But I'm also being told that this is a dangerous step because something could go wrong that would cause the cluster to fail and then we would be left with nothing because the active server would not be able to come back up. Does anyone have any thoughts on how to handle this? I'm being told that the only way to ensure success is to have at least a day of down time where we bring up a new cluster on the new hardware and then migrate the databases 1 by 1.

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• Windows Server 2008 R2 running at a snail's pace

  - by Django Reinhardt

  Really weird problem here. Our main web server has started running at a snail's pace, for absolutely no reason we can discern. Even after restarting the machine, when there's no little or no ram usage and CPU usage is fluctuating between 0 and 30%, simple tasks, like opening Internet Explorer, or waiting for My Computer to open, take forever. There are no processes hogging system resources that we can see... the machine itself is just exhibiting extremely slow behaviour. I've never seen a machine do this. A lot of security updates had built up, so we decided to let Windows install them. When we looked through the history upon restarting, though, they had failed with error code 800706BA. I don't know if this could be related or not. Any help in this matter would be greatly appreciated. As mentioned in the title, we're running a Windows Server 2008 R2 machine. It's also running SQL Server and IIS. It has 16GB of RAM and a decent Quad Core processor. It's also been fine until now -- and we haven't changed a thing. Thanks for any help.

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• Missing Memory on Windows Server 2008

  - by Chris Lively

  I have a windows 2008 x64 server with 8GB of RAM installed. Task Manager and Resource Monitor both insist that 7.5GB of the RAM is in use. However, the memory list under Processes (Memory Private Bytes) doesn't add up. I do have Show Processes from all users checked and hand adding the numbers I come up with about 3.5GB of RAM. I also looked at the latest copy of SysInternals Process Explorer. And neither the Private Bytes or Working Set adds up to more than about 3.5GB of RAM in use. What's going on? ===== Update: I bounced the server to see what would happen with the memory utilization. After boot and regular operations began it sat at 3GB of RAM usage. 18 hours later, it's back up to 6.8GB of usage with no indication as to where the additional 3.5GB or so of RAM is being used. Here are links to screen shots of the resource monitor and task manager: Resource Monitor Task Manager Update 2: Well, I believe I located the problem. When I detached one of the larger databases from my sql server the amount of ram shown as "in use" dropped drastically. The Memory Private Bytes count barely moved. So I'm guessing that SQL server has some way of allocating memory where it doesn't really show up in any of the monitors. I went further and created a new database file, then transferred all of the data from the one I detached. Even though it has the same data, and the same transactions going through it, the memory in use has stayed low. Maybe there was some corruption in the DB? I'll leave it to the DB gods and go searching for another "problem" ;)

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• Schema objects not visible in SQL Server Management Studio 2008

  - by Germ

  I'm experiencing a weird problem with a SQL login. When I connect to the server in Microsoft SQL Server Management Studio (2008) using this account, I cannot see any of the tables, stored procedures etc. that this account should have access to on a particular database. When I connect to the same server within Visual Studio (2008) with the same account everything is there. When I connect with the same account on a Virtual Machine everything is there. I've also had a co-worker connect to the server using the same login and he's able to view everything as well. I use Microsoft SQL Server Management Studio all day connecting to different servers and databases and I've never experienced this problem. Does anyone have any suggestions on how I can diagnose this problem? I've checked to make sure I don't have any Table filters etc. There's several database on this server and I'm able to see the correct tables that this account has access to in the other databases just fine. Running this query lists the tables I'm expecting to see. SELECT * FROM INFORMATION_SCHEMA.TABLES

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• Replication: SQL Server 2008 Publisher with SQL Server Express 2005 Subscriber

  - by Jeremy

  Here is the setup: SQL Server 2008 Enterprise Server with a Merge Publication. SQL Server 2005 Express with pull subscription. There is no web or ftp setup. This is direct merge replication. Using the RMO objects from C#, I get a "class cannot be found." COM Error when accessing the MergePullSubscription.SynchronizationAgent property. I've tried with both the 2008 RMO dll's (version 10 dll's) and the 2005 RMO dll's (version 9 dll's). When trying to use replmerge.exe, I get the following: 2010-04-10 04:12:05.263 Microsoft SQL Server Merge Agent 9.00.1399.06 2010-04-10 04:12:05.294 Copyright (c) 2000 Microsoft Corporation 2010-04-10 04:12:05.294 2010-04-10 04:12:05.294 The timestamps prepended to the output lines are express ed in terms of UTC time. 2010-04-10 04:12:05.294 User-specified agent parameter values: -Publisher SUN -PublisherDB PRIMROSE -PublisherSecurityMode 1 -Publication PRIMROSE -Distributor SUN -DistributorSecurityMode 1 -Subscriber PVILLE\SQLEXPRESS -SubscriberSecurityMode 1 -SubscriberDB PRIMROSE -SubscriptionType 1 -DistributorLogin sa -DistributorPassword ********** -DistributorSecurityMode 0 -PublisherLogin sa -PublisherPassword ********** -PublisherSecurityMode 0 -SubscriberLogin sa -SubscriberPassword ********** -SubscriberSecurityMode 0 2010-04-10 04:12:05.325 Connecting to Subscriber 'PVILLE\SQLEXPRESS' 2010-04-10 04:12:05.481 Connecting to Distributor 'SUN' 2010-04-10 04:12:05.513 The version of SQL Server running at the Distributor(10. 0.2531.??????????????????) is not compatible with the version of SQL Server runn ing at the Subscriber(9.00.1399.???????L?L?LHL?L?L?L?,?). 2010-04-10 04:12:05.513 Category:NULL Source: Merge Process Number: -2147200979 Message: The version of SQL Server running at the Distributor(10.0.2531.???????? ??????????) is not compatible with the version of SQL Server running at the Subs criber(9.00.1399.???????L?L?LHL?L?L?L?,?). Any ideas?

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• OLTP Sql Server RAID configuration with 10 disks, allocation Unit and disk stripe size

  - by Chris Wood

  On a new db server I only have 10 disks to play with, The usage is about a booking every 3-5 seconds, so not high volume, I know compromises have to be made, but my initial thoughts are - DISK 1 & 2 - RAID 1 - OS DISKS 3,4,5,6 - RAID 10 - Data, Indexes & TempDB DISKS 7,8,9,10 - RAID 10 - Logs & Backup Full backups will take place when there is virtually no traffic on the website so not bothered about the contention with the logs. disk 3-10 - 8kb NTFS unit allocation size disk 3-10 - 64kb Disk Stripe size does this seems to be sensible, any other considerations I have omitted ? thanks

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• How do I back up Hyper-V VMs with Windows Server backup on Windows Server 2008 R2?

  - by Chris

  I've searched this site and google, and I CAN find information about how to back up Hyper-V virtual machines by using Windows Server Backup from the Hyper-V host in Windows Server 2008. You have to set up a registry key to enable the Hyper-V VSS writer, and then you can take online backups of your VMs. However, all the information I have found is about a year old, and none of it has been updated for Windows Server 2008 R2. I tried to run the "FixIt" .msi found here: http://support.microsoft.com/kb/958662 ... but it said that it was not applicable to my operating system. So I am thinking either Windows Server 2008 R2 already has its VSS service for Hyper-V enabled, or it still needs to be enabled but the FixIt package doesn't feel comfortable operating on an OS that wasn't RTM at the time. I went ahead and scheduled a windows server backup for 9pm tomorrow. It said it would take 86 GB, which means it MUST be counting those VMs. But will this backup fail? Can anyone confirm whether you have to apply the same registry changes for R2?

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• install SSMSE 2008 after VS 2010

  - by snehalpatkar

  hi guys i have installed VS 2010 ultimate on windows 7 machine which by default install sql server 2008. now i want to install SSMSE 2008 i download the following file SQLEXPRWT_x86_ENU and tried to install it but it give me error. [Window Title] Program Compatibility Assistant [Main Instruction] This program has known compatibility issues [Expanded Information] After SQL Server Setup completes, you must apply SQL Server 2008 Service Pack 1 (SP1) or a later service pack before you run SQL Server 2008 on this version of Windows. [^] Hide details [ ] Don't show this message again [Check for solutions online] [Run program] [Cancel] TITLE: SQL Server Setup failure. SQL Server Setup has encountered the following error: Invoke or BeginInvoke cannot be called on a control until the window handle has been created.. BUTTONS: OK how to install SSMSE 2008 after installing VS 2010 please help

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• Fatal error 9001 on shared SQL Server 2008

  - by user643192

  I've asked this same question on StackOverflow, but I might actually have a better chance for an answer here so am posting here as well. I know this question has been asked here before, but none of the suggestions have worked for me. I have an ASP.NET MVC (v. 3) website on a shared server. The website was working fine for a few weeks now, until I started getting a Fatal Error 9001 error straight after login. Because this is a shared server, there are only very limited things I can do with the database (and I don't know that much about databases anyway). The help desk insist that there is nothing wrong with their server. I got various suggestions from them: Upgrading to the business plan because I am out of space (first suggestion) Even though the .mdb file is small, the .ldb can grow very quickly. The .ldb file is probably taking up all the space. I have 100MB available, the database size is 16.5MB. Can the .ldb file take up the remaining space? On querying this with the helpdesk, they admitted that my entire db is only 25MB. There is something wrong with my SQL queries and I should check the website. I'm using EF with linq to SQL. Everything was working fine until now... Can there be something that goes wrong in the queries that causes this sort of error? There is nothing wrong to be seen in the db logs, so this error cannot possibly have happened. I should log it next time it happens and contact again. I found some posts suggesting that restoring a DB backup can get rid of the issue. I do not have a recent backup, and can't take a new one because of a fatal error 9001 occurring. Since this is a shared server I have about 0 authority to execute anything against the DB (think CHECKDB, truncating the log, etc.). So I am at my wits end pretty much. What else can I do/try to get my website moving again?

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• SQL Server 2008 - "Enhanced read-ahead and scan"?

  - by Chris J

  Hi all, Can anyone point me to, or does anyone know what this "feature" of SQL Server is? Googling for it (also for "Super scan" which seems to be a synonym for the feature) reveals no information other than all the edition comparison pages that exist out there for SQL Server. I'm also not sure whether this is a stackoverflow or a serverfault question. I'll try here on serverfault first, but if folk think stackoverflow may be a better forum, drop me a comment to that effect - ta :-)

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• Unable to start SQL Server Instance 2008 R2 - DB file corrupt

  - by Velu

  I was not able to start the SQL Server 2008 R2 production DB instance. After reading the log file error message is " The log scan number passed to log scan in database ‘master’ is not valid. This error may indicate data corruption or that the log file (.ldf) does not match the data file (.mdf). If this error occurred during replication, re-create the publication." After reading several post i realize that my MASTER DB file is corrupted. I have followed the below setup Copy the Master.mdf and Masterlog.ldf file from Template location to My Database Data folder. C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Binn\Templates to D:\MSSQL\MSSQL10_50.MSSQLSERVER\MSSQL\DATA Note: Same error occur when i copy the all DB file like Master, MasterLog, MSDBData, MSDBlog, Model and ModelLog When i run my MSSQLSEVER instance different problem occur. In My server i had only C, D- Drive i dont have the E drive. How can i override these below error path. Error LOG 2012-10-24 02:51:12.79 spid5s Error: 17204, Severity: 16, State: 1. 2012-10-24 02:51:12.79 spid5s FCB::Open failed: Could not open file e:\sql10_main_t.obj.x86fre\sql\mkmastr\databases\objfre\i386\MSDBData.mdf for file number 1. OS error: 3(The system cannot find the path specified.). 2012-10-24 02:51:12.79 spid5s Error: 5120, Severity: 16, State: 101. 2012-10-24 02:51:12.79 spid5s Unable to open the physical file "e:\sql10_main_t.obj.x86fre\sql\mkmastr\databases\objfre\i386\MSDBData.mdf". Operating system error 3: "3(The system cannot find the path specified.)". 2012-10-24 02:51:12.79 spid5s Error: 17207, Severity: 16, State: 1. 2012-10-24 02:51:12.79 spid5s FileMgr::StartLogFiles: Operating system error 2(The system cannot find the file specified.) occurred while creating or opening file 'e:\sql10_main_t.obj.x86fre\sql\mkmastr\databases\objfre\i386\MSDBLog.ldf'. Diagnose and correct the operating system error, and retry the operation. 2012-10-24 02:51:12.79 spid5s File activation failure. The physical file name "e:\sql10_main_t.obj.x86fre\sql\mkmastr\databases\objfre\i386\MSDBLog.ldf" may be incorrect.

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• Equations saved from Word 2007 for Windows do not appear in Word 2008 for Mac

  - by user36081

  I am a math teacher who uses Word 2008 on the Mac, and I need to collaborate with other teachers who are using Word 2007 under Windows. When they send me a document with mathematical equations in it, I can open it but not see the equations or the document loses formatting such as superscript for exponents. On this page of Known Issues in Word 2008, Microsoft says, Equations saved from Word 2007 for Windows do not appear in Word 2008 for Mac Equations saved in Word 2007 for Windows are not supported in Word 2008 for Mac. The equations will be preserved so that they display correctly in Word 2007, but will appear as placeholders in Word 2008. What can I do to collaborate with users of Word 2007 on mathematical documents?

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• Logging with Resource Monitor?

  - by Jay White

  I am having sudden spikes in disk read activity, which can tie up my system for a few seconds at a time. I would like to figure out the cause of this before I set my machine to go live. With Performance Monitor I know I can log activity, but this does not show me individual processes that cause a spike. Resource Monitor allows me to see processes, but I have no way to keep logs. It seems unless I have Resource Monitor open at the time of a spike, I will not be able to identify the process causing the spike. Can someone suggest a way to log with Resource Monitor, or an alternative tool that can?

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• Advice needed: warm backup solution for SQL Server 2008 Express?

  - by Mikey Cee

  What are my options for achieving a warm backup server for a SQL Server Express instance running a single database? Sitting beside my production SQL Server 2008 Express box I have a second physical box currently doing nothing. I want to use this second box as a warm backup server by somehow replicating my production database in near real time (a little bit of data loss is acceptable). The database is very small and resources are utilized very lightly. In the case that the production server dies, I would manually reconfigure my application to point to the backup server instead. Although Express doesn't support log shipping natively, I am thinking that I could manually script a poor man's version of it, where I use batch files to take the logs and copy them across the network and apply them to the second server at 5 minute intervals. Does anyone have any advice on whether this is technically achievable, or if there is a better way to do what I am trying to do? Note that I want to avoid having to pay for the full version of SQL Server and configure mirroring as I think it is an overkill for this application. I understand that other DB platforms may present suitable options (eg. a MySQL Cluster), but for the purposes of this discussion, let's assume we have to stick to SQL Server.

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• Windows Server 2008 R2 Server Manager not working -> mmc.exe crashes with System.IO.FileNotFoundException

  - by Aleja_Vigo

  Since some days ago I can't run the Server Manager, it fails like this: Descripción: Stopped working Firma con problemas: Nombre del evento de problema: CLR20r3 Firma del problema 01: mmc.exe Firma del problema 02: 6.1.7600.16385 Firma del problema 03: 4a5bc808 Firma del problema 04: System.Management Firma del problema 05: 2.0.0.0 Firma del problema 06: 4ca2baf0 Firma del problema 07: 32f Firma del problema 08: 12b Firma del problema 09: System.IO.FileNotFoundException Versión del sistema operativo: 6.1.7601.2.1.0.272.7 There are other strange syntoms in the SO: Hyper-V stopped working as well, fails to load any VM information The desktop icons rearrange themselves all the time, and always on boot, after I move them. I use now an app that remembers their position to restore it... Windows Update service dissapeared, along with BITS service, I managed to recover them and installed all updates availables today I'm going nuts looking for information about these errors. Solutions that didn't work: sfc /scannow Doesn't complain about anything All windows updates applied (after recovering missing Windows Update) ServerManager.log: Only one error all the time: Error (Id=0) System.Runtime.InteropServices.COMException (0x800706D9): No hay más extremos disponibles desde el asignador de extremos. (Excepción de HRESULT: 0x800706D9) en Microsoft.Windows.ServerManager.NativeMethods.INetFwPolicy2.IsRuleGroupCurrentlyEnabled(String group) en Microsoft.Windows.ServerManager.DirectResult.GetRemoteManagementEnabled() In english : "There are no more endpoints available from the endpoint mapper" Where could I see which is the infamous file that mmc.exe is looking for in that System.IO.FileNotFoundException?? Please, any light on this would be much appreciated...

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• Migration of VM from Hyper-V to Hyper-V R2 - Pass through disks

  - by Andrew Gillen

  I am trying to migrate a VM which is using two pass through disks from a legacy Hyper-V Cluster to a new R2 cluster. The migrated VM cannot use the pass through disks though. The guest OS (2008 R2) doesn't seem to like the disk and eventually tries to format the disk instead of mounting it. The migration process I have been using for all my VMs is to export the VM to a new lun, then add that new lun to the new cluster, importing the vm off it in the hyper-v console, then making it highly available. I assumed I could do the same thing and just add the two pass through disks to the new cluster and then attach them inside Hyper-V. Is there a process I need to follow to migrate pass through disks that does not involve setting up new Luns and robocopying the data over?

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• SQL Server 2008 R2 Error 15401 when trying to add a domain user

  - by Alice

  I am trying to add a domain user. I am doing the following. Expand Security Right click on Logins Select New Login... Login name select search Click on location and select entire directory Type username Click checkname The name goes underlined and add some more info Click OK Click OK I then get the following error: I have found http://support.microsoft.com/kb/324321. The Login does exist There is no Duplicate security identifiers Authentication failure I don't think is happening as I can browse AD Case sensitivity should not be the problem as I am doing the checkname and it is correcting it. Not a Local account Name resolution again I can see the AD I have rebooted the server (VM) and the issue is still happening. Any ideas? Edit I have also: Domain member: Digitally encrypt secure channel data (when possible) – Disable this policy Domain member: Digitally sign secure channel data (when possible) – Disable this policy Rebooted server http://talksql.blogspot.com/2009/10/windows-nt-user-or-group-domainuser-not.html Edit 2 I have also: Digitally encrypt or sign secure channel data (always)- Disabled Rebooted Edit 3 Since the question have moved site I no longer haves access to comment etc... I have checked the dns on the server to a machine where it is working. The DNS servers are the same on both...

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• SQL Server and Hyper-V Dynamic Memory Part 3

  - by SQLOS Team

  In parts 1 and 2 of this series we looked at the basics of Hyper-V Dynamic Memory and SQL Server memory management. In this part Serdar looks at configuration guidelines for SQL Server memory management. Part 3: Configuration Guidelines for Hyper-V Dynamic Memory and SQL Server Now that we understand SQL Server Memory Management and Hyper-V Dynamic Memory basics, let’s take a look at general configuration guidelines in order to utilize benefits of Hyper-V Dynamic Memory in your SQL Server VMs. Requirements Host Operating System Requirements Hyper-V Dynamic Memory feature is introduced with Windows Server 2008 R2 SP1. Therefore in order to use Dynamic Memory for your virtual machines, you need to have Windows Server 2008 R2 SP1 or Microsoft Hyper-V Server 2008 R2 SP1 in your Hyper-V host. Guest Operating System Requirements In addition to this Dynamic Memory is only supported in Standard, Web, Enterprise and Datacenter editions of windows running inside VMs. Make sure that your VM is running one of these editions. For additional requirements on each operating system see “Dynamic Memory Configuration Guidelines” here. SQL Server Requirements All versions of SQL Server support Hyper-V Dynamic Memory. However, only certain editions of SQL Server are aware of dynamically changing system memory. To have a truly dynamic environment for your SQL Server VMs make sure that you are running one of the SQL Server editions listed below: ·         SQL Server 2005 Enterprise ·         SQL Server 2008 Enterprise / Datacenter Editions ·         SQL Server 2008 R2 Enterprise / Datacenter Editions Configuration guidelines for other versions of SQL Server are covered below in the FAQ section. Guidelines for configuring Dynamic Memory Parameters Here is how to configure Dynamic Memory for your SQL VMs in a nutshell: Hyper-V Dynamic Memory Parameter Recommendation Startup RAM 1 GB + SQL Min Server Memory Maximum RAM > SQL Max Server Memory Memory Buffer % 5 Memory Weight Based on performance needs   Startup RAM In order to ensure that your SQL Server VMs can start correctly, ensure that Startup RAM is higher than configured SQL Min Server Memory for your VMs. Otherwise SQL Server service will need to do paging in order to start since it will not be able to see enough memory during startup. Also note that Startup Memory will always be reserved for your VMs. This will guarantee a certain level of performance for your SQL Servers, however setting this too high will limit the consolidation benefits you’ll get out of your virtualization environment. Maximum RAM This one is obvious. If you’ve configured SQL Max Server Memory for your SQL Server, make sure that Dynamic Memory Maximum RAM configuration is higher than this value. Otherwise your SQL Server will not grow to memory values higher than the value configured for Dynamic Memory. Memory Buffer % Memory buffer configuration is used to provision file cache to virtual machines in order to improve performance. Due to the fact that SQL Server is managing its own buffer pool, Memory Buffer setting should be configured to the lowest value possible, 5%. Configuring a higher memory buffer will prevent low resource notifications from Windows Memory Manager and it will prevent reclaiming memory from SQL Server VMs. Memory Weight Memory weight configuration defines the importance of memory to a VM. Configure higher values for the VMs that have higher performance requirements. VMs with higher memory weight will have more memory under high memory pressure conditions on your host. Questions and Answers Q1 – Which SQL Server memory model is best for Dynamic Memory? The best SQL Server model for Dynamic Memory is “Locked Page Memory Model”. This memory model ensures that SQL Server memory is never paged out and it’s also adaptive to dynamically changing memory in the system. This will be extremely useful when Dynamic Memory is attempting to remove memory from SQL Server VMs ensuring no SQL Server memory is paged out. You can find instructions on configuring “Locked Page Memory Model” for your SQL Servers here. Q2 – What about other SQL Server Editions, how should I configure Dynamic Memory for them? Other editions of SQL Server do not adapt to dynamically changing environments. They will determine how much memory they should allocate during startup and don’t change this value afterwards. Therefore make sure that you configure a higher startup memory for your VM because that will be all the memory that SQL Server utilize Tune Maximum Memory and Memory Buffer based on the other workloads running on the system. If there are no other workloads consider using Static Memory for these editions. Q3 – What if I have multiple SQL Server instances in a VM? Having multiple SQL Server instances in a VM is not a general recommendation for predictable performance, manageability and isolation. In order to achieve a predictable behavior make sure that you configure SQL Min Server Memory and SQL Max Server Memory for each instance in the VM. And make sure that: ·         Dynamic Memory Startup Memory is greater than the sum of SQL Min Server Memory values for the instances in the VM ·         Dynamic Memory Maximum Memory is greater than the sum of SQL Max Server Memory values for the instances in the VM Q4 – I’m using Large Page Memory Model for my SQL Server. Can I still use Dynamic Memory? The short answer is no. SQL Server does not dynamically change its memory size when configured with Large Page Memory Model. In virtualized environments Hyper-V provides large page support by default. Most of the time, Large Page Memory Model doesn’t bring any benefits to a SQL Server if it’s running in virtualized environments. Q5 – How do I monitor SQL performance when I’m trying Dynamic Memory on my VMs? Use the performance counters below to monitor memory performance for SQL Server: Process - Working Set: This counter is available in the VM via process performance counters. It represents the actual amount of physical memory being used by SQL Server process in the VM. SQL Server – Buffer Cache Hit Ratio: This counter is available in the VM via SQL Server counters. This represents the paging being done by SQL Server. A rate of 90% or higher is desirable. Conclusion These blog posts are a quick start to a story that will be developing more in the near future. We’re still continuing our testing and investigations to provide more detailed configuration guidelines with example performance numbers with a white paper in the upcoming months. Now it’s time to give SQL Server and Hyper-V Dynamic Memory a try. Use this guidelines to kick-start your environment. See what you think about it and let us know of your experiences. - Serdar Sutay Originally posted at http://blogs.msdn.com/b/sqlosteam/

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• How can I stop SQL Server Reporting Services 2008 going to sleep?

  - by Nick

  I have SSRS 2008 set-up on a server. All works fine except that if left inactive for a length of time the next time a request is made to the server it takes a long time for it to service it. I think this is to do with the worker process being shutdown after being idle for a certain length of time. However, as SSRS 2008 isn't managed through IIS I can't find any settings that I can adjust to stop this from happening. In IIS I'd go to the Performance tab of the Application Pool Properties and choose not to shutdown the worker process. How can I do this for SSRS 2008?

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• Restore Database from MSSql 2008 to MSSql 2005

  - by Nirmal

  Hello... I have created a set of tables (around 20) in MSSql 2008 and entered around 1000 records to appropriate tables. But the issue is that I want that same tables with all the entered data into MSSql 2005 (SQLEXPRESS). Obviously it won't work by taking a backup and restore it into MSSql 2005 as it won't support backward compatibility. Any suggestion would be appreciated.... Thanks in advance....

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• Recover Data Entered in MSSql 2008 to MSSql 2005

  - by Nirmal

  Hello... I have created a set of tables (around 20) in MSSql 2008 and entered around 1000 records to appropriate tables. But the issue is that I want that same tables with all the entered data into MSSql 2005 (SQLEXPRESS). Obviously it won't work by taking a backup and restore it into MSSql 2005 as it won't support backward compatibility. Any suggestion would be appreciated.... Thanks in advance....

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• Restore Database from SQL Server 2008 to SQL Server 2005

  - by Nirmal

  I have created a set of tables (around 20) in SQL Server 2008 and entered around 1000 records to appropriate tables. But the issue is that I want that same tables with all the entered data into SQL Server 2005 (SQLEXPRESS). Obviously it won't work by taking a backup and restore it into SQL Server 2005 as it won't support backward compatibility. Any suggestion would be appreciated....

  Read the article

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