How Does One "lockup" A SQL Server Accidentally?
Nov 11, 1998
Someone stumped me with a question the other day. And I was wanting to know if my answer was accurate.
They were worried about locking up SQLServer with too many queries when accessing it through a web page.
I haven't actually had this problem with any of the stuff I have done. And I never had it happen way back when I was just doing database stuff either.
I suppose this happens when a query is run that the stored procedure conflict and end up getting locked up because neither query can finish their process until the other lets the tables go. So one way to avoid this is to make sure dangerous queries are never done through the web interface. Right can do but
and the other thing I was wondering about it how they balance queries on the server. I know about testing the equipment to find out which queries work the best and how to create a good normalized database you know good structure etc. (is this why I never had this problem or is it more because I did have a ton of different people accessing the data all at once -- but if they are accessing it in a controlled fashion then whats the worry right?)
Since I don't know how to cause this exactly-- I don't know how to prevent it.
Can anyone help me solve why my server is locking up.
We're running sql server 2005 ent on a 2 cpu dual core server. With 3gig. Once each the last couple weeks, the machine has hung and the only thing I can find that's suspicious is on the sql server log. It's below. After the excerpt is about 50 more different memory errors. As far as I know there's no ssl configured for log in, it mostly uses private lan cards for security between it and the web/application server.
05/31/2006 14:39:48,spid2s,Unknown,MEMORYCLERK_SQLQUERYEXEC (Total) <nl/> VM Reserved = 0 KB <nl/> VM Committed = 0 KB <nl/> AWE Allocated = 0 KB <nl/> SM Reserved = 0 KB <nl/> SM Committed = 0 KB<nl/> SinglePage Allocator = 1000 KB<nl/> MultiPage Allocator = 312 KB 05/31/2006 14:39:48,spid2s,Unknown,MEMORYCLERK_SQLBUFFERPOOL (Total) <nl/> VM Reserved = 4214784 KB <nl/> VM Committed = 4198400 KB <nl/> AWE Allocated = 0 KB <nl/> SM Reserved = 0 KB <nl/> SM Committed = 0 KB<nl/> SinglePage Allocator = 0 KB<nl/> MultiPage Allocator = 40 KB 05/31/2006 14:39:48,spid2s,Unknown,MEMORYCLERK_SQLGENERAL (Total) <nl/> VM Reserved = 0 KB <nl/> VM Committed = 0 KB <nl/> AWE Allocated = 0 KB <nl/> SM Reserved = 0 KB <nl/> SM Committed = 0 KB<nl/> SinglePage Allocator = 30408 KB<nl/> MultiPage Allocator = 4528 KB 05/31/2006 14:39:48,spid2s,Unknown,Memory node Id = 0 <nl/> VM Reserved = 4261240 KB <nl/> VM Committed = 4244224 KB <nl/> AWE Allocated = 0 KB <nl/> SinglePage Allocator = 2403592 KB<nl/> MultiPage Allocator = 27392 KB 05/31/2006 14:39:48,spid2s,Unknown,Memory Manager <nl/> VM Reserved = 4266872 KB<nl/> VM Committed = 4249768 KB <nl/> AWE Allocated = 0 KB <nl/> Reserved Memory = 1024 KB <nl/> Reserved Memory In Use = 0 KB 05/31/2006 14:39:48,spid2s,Unknown,LazyWriter: warning<c/> no free buffers found. 05/31/2006 14:34:30,Logon,Unknown,The server was unable to load the SSL provider library needed to log in; the connection has been closed. SSL is used to encrypt either the login sequence or all communications<c/> depending on how the administrator has configured the server. See Books Online for information on this error message: 0x2746. [CLIENT: 10.10.10.207] 05/31/2006 14:34:30,Logon,Unknown,Error: 17194<c/> Severity: 16<c/> State: 1. 05/31/2006 14:03:05,Backup,Unknown,Database differential changes were backed up. Database: PRIOS_New<c/> creation date(time): 2006/03/02(07:41:21)<c/> pages dumped: 156468<c/> first LSN: 2317:48292:175<c/> last LSN: 2317:49978:1<c/> full backup LSN: 2315:126242:184<c/> number of dump devices: 1<c/> device information: (FILE=1<c/> TYPE=DISK: {'D:DiffBackupPRIOS_New_backup_200605311400.bak'}). This is an informational message. No user action is required.
Our HP Proliant ML 330 G5 (3.0 Duo Core Xeon, 4 GBs RAM) server is running Windows 2003 R2 Standard 32 bit ( Win SP2) and SQL Server 2005 Standard (SQL SP2 €“ version 9.00.3054.00(Intel X86)). At random times every 1-14 days, our server will lock up. While the Windows Login screen or the standard Windows screen saver is viewable on the server still, the computer becomes completely non-responsive. The keyboard and mouse do not work and we can no longer connect to the server via a Terminal Service connection. We are able to ping the server while it is locked up though. The only way to get the server back up and running is by doing a hard power down and then power it back up.
Upon getting the server back up and running, everything goes back to working as normal with both Windows and SQL. There is nothing in any of the event logs indicating any type of issue prior to the server locking up. We are really at a loss on where to start troubleshooting this. We have no reason to think it is a hardware issue at this point but are not ruling that out. Any ideas what we can do to start tracking down the cause of this problem?
Hi all,Have a situation that my company has never run across before. Clientis running NT4 for the domain server, using terminal services 2000 andrunning an application with a SQL Server backend and they areexperiencing locking problems. Once one person gets locked out theneveryone trying to access that tables is also locked out as a result.It is not specific to a certain User, or module within theapplication. It's not a specific time of the day (like when a backupwould be running) and sometimes it's in the middle of the night whenthere are actually less Users on the system.We have 500 customers using this application. Most are using SQLServer backend, alot of the newer customers are using TerminalServices, and the number of Users is not accessive as compared to ourother customers. THe only difference is that I do not specificallyknow of another client with an NT4 Domain server in the mix.We actually switched to SQL Server as the recommended back end due tolocking issues using SQLBase because SQL Server is row locking andSQLBase is page locking. Since making this change we have stoppedseeing the locking for years until now. Is this a SQLServer issue orissue with the NT Domain server?Anyone have any ideas???ThanksA
I accidentally set max server memory to 0. Now I cannot rectify as there are insufficient resources in internal memory pool to rectify. How I can recover? I've been unsuccessful to date in running sqlcmd in single user mode.
Hi, I have accidentally disabled the Administrator account in Sql Server 2005 (Douh!) on my clients server (double Dough!) & now I can login to enable it.
The <BuiltInAdministartors> account is still active, The accout i disabled was <DomainAdministrator> (forgot I was logined via Terminal server).
Is there any way I can resore a specified set of deleted rows from a table? Most of these rows were created during the course of the day, but at the end a user deleted them accidentally. My latest full backup is from last night, but if I restore it, it will overwrite many other tables that already have correct informaiton entered during the day. Is there any to roll back only the transaction with which the rows were deleted?
Is there any way I can resore a specified set of deleted rows from a table? Most of these rows were created during the course of the day, but at the end of it a user deleted them accidentally. My latest full backup is from last night, but if I restore it, it will overwrite many other tables that already have correct informaiton entered during the day. Is there any to roll back only the transaction with which the rows were deleted?
My server is a dual AMD x64 2.19 GHz with 8 GB RAM running under Windows Server 2003 Enterprise Edition with service pack 1 installed. We have SQL 2000 32-bit Enterprise installed in the default instance. AWE is enabled using Dynamically configured SQL Server memory with 6215 MB minimum memory and 6656 maximum memory settings.
I have now installed, side-by-side, SQL Server 2005 Enterprise Edition in a separate named instance. Everything is running fine but I believe SQL Server2005 could run faster and need to ensure I am giving it plenty of resources. I realize AWE is not needed with SQL Server 2005 and I have seen suggestions to grant the SQL Server account the 'lock pages in memory' rights. This box only runs the SQL 2000 and SQL 2005 server databases and I would like to ensure, if possible, that each is splitting the available memory equally, at least until we can retire SQL Server 2000 next year. Any suggestions?
We have an old machine which holds SQL server 2000 database. We need to migrate a whole database to a new machine which has SQL server 2005.
When we tried to move whole database using Import and Export Wizard, only tables can be selected to import/export. However we want to import/export the whole database, including tables, stored procedure, view, etc. Which tool should we use?
We have an old machine which holds SQL server 2000 database. We need to migrate a whole database to a new machine which has SQL server 2005.
When we tried to move whole database using Import and Export Wizard, only tables can be selected to import/export. However we want to import/export the whole database, including tables, stored procedure, view, etc. Which tool should we use?
When I proposed start to use SQL Server 2005 for new VS 2005 web sites, one of my co-workers responded that we will update the old SQL Server 2000 databases to SQL Server 2005 when we are ready to use 2005 SQL Server.
Questions: 1. Any expected problems to upgrade old 2000 databases to new 2005 SQL Server? 2. I have installed both 2005/Management Studio Express and 2000/Enterprise Manager in my PC. Any expected problems when running both 2000 and 2005 SQL Server at the same database server? 3. What is the best configuration for running SQL Server 2005 when we have old 2000 databases? Upgade or not upgrade?
I am getteing need help Query analyzer error Unable to connect server local Msg17, level 16,state 1 ODBC SQL server driver [DBNETLIB]SQL server does not exist
Hi, I am having a problem connecting my .net applications from the application server to the database server. When I run the application from my windows xp (sp2) box it works fine. When I try to connect via SQL Management Studio to the database server from the application server I get the same error. Here is the error: System.Data.SqlClient.SqlException: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) Here is the Environment: App Server: Windows Server 2003 Standard Edition Inside Company's Firewall/ Network Database Server: Windows Server 2000 Advanced Edition SQL Server 2000 SP4 Remote Connections to the Server is checked Enable Protocols: Named Pipes & TCP/IP TCP/IP Port: 1402 (I don't know why it isn't the default of 1433) The db server is sitting out side the Company's firewall (don't ask me why). I can access it fine from inside the firewall on my XP box but not from windows server 2003. There is a web server outside the our network that also connects to the db server with no problem and that is running Windows Server 2003 Web Edition. I can ping the db server from the app server using the IP address. I tried using the IP address and the port 1402 in my connection string but that didn't work from any machine (XP and Server). I imagine the issue is somehow related to the company's firewall but why would it only block Windows Server 2003 and not XP? What do I tell the network admin to change? Any help would be appreciated. Thanks, Oran
if you can restore a database to Server B using Server A as the service. Meaning we would issue the command on Server A but somehow point to Server B as where we want the restore to happen.
The backup file would be in a location independent of both servers.
Dear all,On Win2000 server with SP3, I am trying to access a SQL Server 7.0database, "TestDB", from VB6 via a SQL Server ODBC system DSN using ADO2.7. In SQL Server Enterprise Manager, there is a login named "Tester".In its property window, NO "Server Roles" was assigned but its"Database Access" was set to "TestDB". This login was also made as theuser of "TestDB" with "public", "db_datareader" and "db_datawriter"selected as its "Database role membership". All the tables I am tryingto access in "TestDB" were created under "Tester".My code is like:Set conn = New ADODB.Connectionconn.Open "DSN=TestDSN;UID=Tester;PWD=test"Set cmd = New ADODB.Commandcmd.ActiveConnection = conncmd.CommandText = SQLset rs = cmd.Execute()If I set the SQL to something like "SELECT * FROM tbl_test", I alwaysget an error of "-2147217865" saying "[Microsoft][ODBC SQL ServerDriver][SQL Server] Invalid object name tbl_test". If I set the SQL to"SELECT * FROM Tester.tbl_test", everything runs properly. Could anyoneplease kindly advise why the first SQL is not working? Or in otherwords, why must I prefix the table name with its owner while the DBconnection is already made under that owner name? Thanks in advance.Tracy
When I try to migrate a database on a SQL Server 2000 server to a SQL Server 2005 server with the Copy Database Wizard of the SQL Server Management Studio, I'm confronted with the following problem;
Performing operation...
- Add log for package (Success) - Add task for transferring database objects (Success) - Create package (Success) - Start SQL Server Agent Job (Success) - Execute SQL Server Agent Job (Error) Messages * The job failed. Check the event log on the destination server for details. (Copy Database Wizard)
When I take a look at 'Event viewer' on the SQL 2005 server, the following error is displayed;
InnerException-->An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
I already enabled the MSSQLSERVER network configuration protocols (TCP/IP and Named Pipes ).
My site works fine in VWD2008 express, but I get this error when I try to use it on my live website. An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. According to this article: http://support.microsoft.com/kb/914277 I am supposed to:
1. Click Start, point to Programs, point to Microsoft SQL Server 2005, point to Configuration Tools, and then click SQL Server Surface Area Configuration. Ok, there is no such program in this folder. The only thing in there is "SQL Server Error and Usage Reporting"... The other thing I am greatly concerned with is this: All is want is for my webpages to be able to access my database for user authentication. I DO NOT want to grant the internet rights to remote connect to my database.
Hi All, Please some one help me... I have to insert a csv into one table in sql server. But the problem is the file is in one server and SQL SERVER 2005 is in other server.. how do i insert the file.... please help me.....
Hi Guys, I have had SQL Server Express and Sql Server Management Studio Express installed on my machine for some time and recently tried to install a trial of SQL Server 2005 as well. (Yes, I'm migrating from Visual Studio Express to Visual Studio Professional, just as in tended!) Everything went fine except that nothing seemed to be installed. I searched in all the obvious places - both on the Start/Programs menu and on the hard-drive: nothing. A check under Add/Remove Programs showed that Sql Server 2005 Express was installed, but called SQL Server 2005. So after a number of retries in which the install program kept saying that there was nothing to install, I selected every option under Advanced in the intall process. This resulted in stuff being installed and I now have SQL Server 2005 running on my machine, but no SQL Server Manager icon. My questions are:
Where can I find the SQL Server Manager executeable? Has anyone installed SQL Server Express, SQL Server Mangement Studio Express, SQL Server 2005 and SQL Server Management Studio on a single machine successfully? If so, what order did you install them in? (I'm planning on uninstalling everything SXQL Server related and starting again.) Thanks very much for your help. Regards Gary
Hi,Is it possible to install on a Windows server 2003,SQL SERVER 2000 in the folowing configuration :SQL server 7.0 as a default InstanceandSQL server 2000 as a named instance.Thanks for your answer.
Hi I have created a linked server from SQL Server 2005 (SP 1) to SQL Service 2000 (SP 4) with a sql server login that is available on both servers but with different passwords and permissions.
I am getting the following error while accessing the linked server in management studio based on the scenario given below ;
------ Error Message Starts OLE DB provider "SQLNCLI" for linked server "(SQL Server 2000 instance name)" returned message "Communication link failure". Msg 10054, Level 16, State 1, Line 0 TCP Provider: An existing connection was forcibly closed by the remote host. Msg 18456, Level 14, State 1, Line 0 Login failed for user 'abc'. ------ Error Message Ends
Consider login name is abc. Now this login abc has sysadmin rights on sql server 2005. The same login abc has only db_datareader rights on sql server 2000 on just one database and is not associated with any fixed server role.
I have configured the linked server using the following options; 1. I have tried impersonating login from SQL Server 2005 to SQL Server 2000 . 2. I have also tried specifying remote login / password option.
Anyone having any idea, would be of great help. Regards, Salman Shehbaz.
Msg 7399, Level 16, State 1, Procedure tr_cpD, Line 14
The OLE DB provider "SQLNCLI" for linked server "S2" reported an error. The provider did not give any information about the error.
Msg 7312, Level 16, State 1, Procedure tr_cpD, Line 14
Invalid use of schema or catalog for OLE DB provider "SQLNCLI" for linked server "S2". A four-part name was supplied, but the provider does not expose the necessary interfaces to use a catalog or schema.
I have an intranet environment consists of two servers:
- An application server windows 2003 server with 64-bit server Sharepoint 2007 SP1 (Standard version for search) - A database server windows 2003 server with 64-bit SQL Server 2005 SP2 64-bit (Standard - 9.0.3054)
It happens regularly that the database server crash (frozen black screen) while the application server indexes (crawl) the content of the intranet site based on sharepoint. There is no alert / error in the observer of events, nor in the sql logs.
The crash is uncertain: dice once all goes well, soon after that crash. When i set the parameter search service (service management research), I can define a regulatory impact of the robot to change the number of documents at the same time : "Request 2 documents at the same time, the crash is more rare, "ask 64 documents at a time, the crash is more common.
My Intranet under sharepoint is composed of a collection site with a dozen sub-sites. There are 3 large library of PDF document. All done in the 4 go in terms of volume.
My problem for about 3-4 months. (Maybe more. Before, indexing was not yet in place).
Can I connect from a SQL Server 2005 database to a SQL Server 2000 database, without establishing a linked server connection.
I need to fire a SELECT query on a SQL Server 2000 database, but don't want to add it as a linked server. Is there any way I can do this or its not possible??
I have a Sybase Adaptive Server Enterprise server which I need to set up as a linked server in SQL Server 2005. The Sybase server is version 12.5.2, and the Sybase ODBC driver version is 4.20.00.67. I have already installed the Sybase client software on the server.
I also created a SystemDSN on the SQL Server to connect to the Sybase server. I tested the connection and it was able to connect.
I ran the following code to create the linked server:
I then ran sp_tables_ex to make sure I could view the tables in the Sybase database. Here is the error message I get:
<code>
OLE DB provider "MSDASQL" for linked server "LinkedServerName" returned message "[DataDirect][ODBC Sybase Wire Protocol driver]Error parsing connect string at offset 13. ".
Msg 7303, Level 16, State 1, Procedure sp_tables_ex, Line 41
Cannot initialize the data source object of OLE DB provider "MSDASQL" for linked server "LinkedServerName".
I get the following error and have been trying to figure out why I keep getting it. Initially, I had placed my project under wwwroot folder and ran it under IIS and it gave this error. Then I moved it to my local C drive and same thing. I am sharing this project with two other co-workers and all our config files and code files are same...they don't get this error but I do. I checked that SQL Server Client Network Utility has TCP/IP and the 'Named Pipes' enabled. I thought maybe I have setting in the Visual Studio 2005 that I'm not aware of that's causing this problem...it can't be the server since my co-workers aren't having this error and can't be anything in the code since all of us are sharing this project through vss. I dont' think using different version of .net framework can create this error. I changed the version from 2.0 to use 1.1x and it gave same error... Any help would be greatly appreciated. Thanks in advance.
Server Error in '/RBOdev' Application.
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[SqlException (0x80131904): An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +739123 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188 System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) +685966 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +109 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +383 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +181 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +170 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +130 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +28 System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66 System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +496 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 System.Web.DataAccess.SqlConnectionHolder.Open(HttpContext context, Boolean revertImpersonate) +84 System.Web.DataAccess.SqlConnectionHelper.GetConnection(String connectionString, Boolean revertImpersonation) +197 System.Web.UI.WebControls.WebParts.SqlPersonalizationProvider.GetConnectionHolder() +16 System.Web.UI.WebControls.WebParts.SqlPersonalizationProvider.LoadPersonalizationBlobs(WebPartManager webPartManager, String path, String userName, Byte[]& sharedDataBlob, Byte[]& userDataBlob) +195 System.Web.UI.WebControls.WebParts.PersonalizationProvider.LoadPersonalizationState(WebPartManager webPartManager, Boolean ignoreCurrentUser) +95 System.Web.UI.WebControls.WebParts.WebPartPersonalization.Load() +105 System.Web.UI.WebControls.WebParts.WebPartManager.OnInit(EventArgs e) +497 System.Web.UI.Control.InitRecursive(Control namingContainer) +321 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +692
Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832
