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• More information wanted on error: CREATE ASSEMBLY for assembly failed because assembly failed verif

  - by turnip.cyberveggie

  I have a small application that uses SQL Server 2005 Express with CLR stored procedures. It has been successfully installed and runs on many computers running XP and Vista. To create the assembly the following SQL is executed (names changed to protect the innocent): CREATE ASSEMBLY myAssemblyName FROM 'c:\pathtoAssembly\myAssembly.dll' On one computer (a test machine that reflects other computers targeted for installation) that is running Vista and has some very aggressive security policy restrictions I receive the following error: << Start Error Message Msg 6218, Level 16, State 2, Server domain\servername, Line 2 CREATE ASSEMBLY for assembly 'myAssembly' failed because assembly 'myAssembly' failed verification. Check if the referenced assemblies are up-to-date and trusted (for external_access or unsafe) to execute in the database. CLR Verifier error messages if any will follow this message [ : myProcSupport.Axis::Proc1][mdToken=0x6000004] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc2][mdToken=0x6000005] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc3][mdToken=0x6000006] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::.ctor][mdToken=0x600000a] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc4][mdToken=0x6000001] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc5][mdToken=0x6000002] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc6][mdToken=0x6000007] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc7][mdToken=0x6000008] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc8][mdToken=0x6000009] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc8][mdToken=0x600000b] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation. [ : myProcSupport.Axis::Proc9][mdToken=0x600000c] [HRESULT 0x8007000E] - Not enough storage is available to complete this operation.... << End Error Message The C# DLL is defined as “Safe” as it only uses data contained in the database. The DLL is not normally signed, but I provided a signed version to test and received the same results. The installation is being done by someone else, and I don’t have access to the box, but they are executing scripts that I provided and work on other computers. I have tried to find information about this error beyond what the results of the script provide, but I haven’t found anything helpful. The person executing the script to create the assembly is logged in with an Admin account, is running CMD as admin, is connecting to the DB via Windows Authentication, has been added to the dbo_owner role, and added to the server role SysAdmin with the hopes that it is a permissions issue. This hasn't changed anything. Do I need to configure SQL Server 2005 Express differently for this environment? Is this error logged anywhere other than just the output from SQLCMD? What could cause this error? Could Vista security policies cause this? I don’t have access to the computer (the customer is doing the testing) so I can’t examine the box myself. TIA

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• Forms Authentication works on dev server but not production server (same SQL db)

  - by Desmond

  Hi, I have the same problem as a previously solved question however, this solution did not help me. I have posted the previous question and answer below: http://stackoverflow.com/questions/2215963/forms-authentication-works-on-dev-server-but-not-production-server-same-sql-db/2963985#2963985 Question: I've never had this problem before, I'm at a total loss. I have a SQL Server 2008 database with ASP.NET Forms Authentication, profiles and roles created and is functional on the development workstation. I can login using the created users without problem. I back up the database on the development computer and restore it on the production server. I xcopy the DLLs and ASP.NET files to the server. I make the necessary changes in the web.config, changing the SQL connection strings to point to the production server database and upload it. I've made sure to generate a machine key and it is the same on both the development web.config and the production web.config. And yet, when I try to login on the production server, the same user that I'm able to login successfully with on the development computer, fails on the production server. There is other content in the database, the schema generated by FluentNHibernate. This content is able to be queried successfully on both development and production servers. This is mind boggling, I believe I've verified everything, but obviously it is still not working and I must have missed something. Please, any ideas? Answer: I ran into a problem with similar symptoms at one point by forgetting to set the applicationName attribute in the web.config under the membership providers element. Users are associated to a specific application. Since I didn't set the applicationName, it defaulted to the application path (something like "/MyApplication"). When it was moved to production, the path changed (for example to "/WebSiteFolder/SomeSubFolder /MyApplication"), so the application name defaulted to the new production path and an association could not be made to the original user accounts that were set up in development. Could your issues possibly be the same as mine? I have this already in my web.config but still get the issue. Any ideas? <membership> <providers> <clear/> <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" passwordFormat="Hashed" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" passwordStrengthRegularExpression="" applicationName="/"/> </providers> </membership> <profile> <providers> <clear/> <add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="ApplicationServices" applicationName="/"/> </providers> </profile> <roleManager enabled="false"> <providers> <clear/> <add connectionStringName="ApplicationServices" applicationName="/" name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/> <add applicationName="/" name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/> </providers> </roleManager> Any help is greatly appriciated.

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• ObjectContext.SaveChanges() fails with SQL CE

  - by David Veeneman

  I am creating a model-first Entity Framework 4 app that uses SQL CE as its data store. All is well until I call ObjectContext.SaveChanges() to save changes to the entities in the model. At that point, SaveChanges() throws a System.Data.UpdateException, with an inner exception message that reads as follows: Server-generated keys and server-generated values are not supported by SQL Server Compact. I am completely puzzled by this message. Any idea what is going on and how to fix it? Thanks. Here is the Exception dump: System.Data.UpdateException was unhandled Message=An error occurred while updating the entries. See the inner exception for details. Source=System.Data.Entity StackTrace: at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) at System.Data.EntityClient.EntityAdapter.Update(IEntityStateManager entityCache) at System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options) at System.Data.Objects.ObjectContext.SaveChanges() at FsDocumentationBuilder.ViewModel.Commands.SaveFileCommand.Execute(Object parameter) in D:\Users\dcveeneman\Documents\Visual Studio 2010\Projects\FsDocumentationBuilder\FsDocumentationBuilder\ViewModel\Commands\SaveFileCommand.cs:line 68 at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated) at System.Windows.Controls.Primitives.ButtonBase.OnClick() at System.Windows.Controls.Button.OnClick() at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e) at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent) at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at FsDocumentationBuilder.App.Main() in D:\Users\dcveeneman\Documents\Visual Studio 2010\Projects\FsDocumentationBuilder\FsDocumentationBuilder\obj\x86\Debug\App.g.cs:line 50 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: System.Data.EntityCommandCompilationException Message=An error occurred while preparing the command definition. See the inner exception for details. Source=System.Data.Entity StackTrace: at System.Data.Mapping.Update.Internal.UpdateTranslator.CreateCommand(DbModificationCommandTree commandTree) at System.Data.Mapping.Update.Internal.DynamicUpdateCommand.CreateCommand(UpdateTranslator translator, Dictionary`2 identifierValues) at System.Data.Mapping.Update.Internal.DynamicUpdateCommand.Execute(UpdateTranslator translator, EntityConnection connection, Dictionary`2 identifierValues, List`1 generatedValues) at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) InnerException: System.NotSupportedException Message=Server-generated keys and server-generated values are not supported by SQL Server Compact. Source=System.Data.SqlServerCe.Entity StackTrace: at System.Data.SqlServerCe.SqlGen.DmlSqlGenerator.GenerateReturningSql(StringBuilder commandText, DbModificationCommandTree tree, ExpressionTranslator translator, DbExpression returning) at System.Data.SqlServerCe.SqlGen.DmlSqlGenerator.GenerateInsertSql(DbInsertCommandTree tree, List`1& parameters, Boolean isLocalProvider) at System.Data.SqlServerCe.SqlGen.SqlGenerator.GenerateSql(DbCommandTree tree, List`1& parameters, CommandType& commandType, Boolean isLocalProvider) at System.Data.SqlServerCe.SqlCeProviderServices.CreateCommand(DbProviderManifest providerManifest, DbCommandTree commandTree) at System.Data.SqlServerCe.SqlCeProviderServices.CreateDbCommandDefinition(DbProviderManifest providerManifest, DbCommandTree commandTree) at System.Data.Common.DbProviderServices.CreateCommandDefinition(DbCommandTree commandTree) at System.Data.Common.DbProviderServices.CreateCommand(DbCommandTree commandTree) at System.Data.Mapping.Update.Internal.UpdateTranslator.CreateCommand(DbModificationCommandTree commandTree) InnerException:

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• [Closed] Oracle JDBC connection with Weblogic 10 datasource mapping, giving problem java.sql.SQLExce

  - by gauravkarnatak

  Oracle JDBC connection with Weblogic 10 datasource mapping, giving problem java.sql.SQLException: Closed Connection I am using weblogic 10 JNDI datasource to create JDBC connections, below is my config <?xml version="1.0" encoding="UTF-8"?> <jdbc-data-source xmlns="http://www.bea.com/ns/weblogic/90" xmlns:sec="http://www.bea.com/ns/weblogic/90/security" xmlns:wls="http://www.bea.com/ns/weblogic/90/security/wls" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/920 http://www.bea.com/ns/weblogic/920.xsd"> <name>XL-Reference-DS</name> <jdbc-driver-params> <url>jdbc:oracle:oci:@abc.XL.COM</url> <driver-name>oracle.jdbc.driver.OracleDriver</driver-name> <properties> <property> <name>user</name> <value>DEV_260908</value> </property> <property> <name>password</name> <value>password</value> </property> <property> <name>dll</name> <value>ocijdbc10</value> </property> <property> <name>protocol</name> <value>oci</value> </property> <property> <name>oracle.jdbc.V8Compatible</name> <value>true</value> </property> <property> <name>baseDriverClass</name> <value>oracle.jdbc.driver.OracleDriver</value> </property> </properties> </jdbc-driver-params> <jdbc-connection-pool-params> <initial-capacity>1</initial-capacity> <max-capacity>100</max-capacity> <capacity-increment>1</capacity-increment> <test-connections-on-reserve>true</test-connections-on-reserve> <test-table-name>SQL SELECT 1 FROM DUAL</test-table-name> </jdbc-connection-pool-params> <jdbc-data-source-params> <jndi-name>ReferenceData</jndi-name> <global-transactions-protocol>OnePhaseCommit</global-transactions-protocol> </jdbc-data-source-params> </jdbc-data-source> When I run a bulk task where there are lots of connections made and closed, sometimes it gives connection closed exception for any of the task in the bulk task. Below is detailed exception' java.sql.SQLException: Closed Connection at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:207) at oracle.jdbc.driver.OracleStatement.ensureOpen(OracleStatement.java:3512) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3265) at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3367) Any ideas?

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• L2S DataContext out of synch: row not found or changed

  - by awrigley

  The Problem I am getting a number of errors that imply that the DataContext, or rather, the way I am using the DataContext is getting out of synch. The error occurs on db.SubmitChanges() where db is my DataContext instance. The error is: Row not found or changed. The problem only occurs intermitently, for example, adding a row then deleting it. If I stop the dev server and restart, the added row is there and I can delete it no problem. Ie, it seems that the problem is related to the DataContext losing track of the rows that have been added. IMPORTANT: Before anyone votes to close this thread, on the basis of it being a duplicate, I have checked the sql server profiler and there is no "Where 0 = 1" in the SQL. I have also recreated the dbml file, so am satisfied that the database schema is in synch with the schema represented by the dbml file. Ie, no cases of mismatched nullable/not nullable columns, etc. My Diagnosis (for what it is worth): It seems to be a problem related to how I am using the DataContext. I am new to MVC, Repositories and Services patterns, so suspect that I have wired things up wrong. The Setup Simple eLearning app in its early stages. Pupils need to be able to add and delete courses (Courses table) to their UserCourses. To do this, I have a service that gets a specific DataContext instance Dependency Injected into its constructor. Service Class Constructor: public class SqlPupilBlockService : IPupilBlockService { DataContext db; public SqlPupilBlockService(DataContext db) { this.db = db; CoursesRepository = new SqlRepository<Course>(db); UserCoursesRepository = new SqlRepository<UserCourse>(db); } // Etc, etc } The CoursesRepository and UserCoursesRepository are both private properties of the service class that are of Type IRepository (just a simple generic repository interface). Sql Respoitory Code: public class SqlRepository<T> : IRepository<T> where T : class { DataContext db; public SqlRepository(DataContext db) { this.db = db; } #region IRepository<T> Members public IQueryable<T> Query { get { return db.GetTable<T>(); } } public List<T> FetchAll() { return Query.ToList(); } public void Add(T entity) { db.GetTable<T>().InsertOnSubmit(entity); } public void Delete(T entity) { db.GetTable<T>().DeleteOnSubmit(entity); } public void Save() { db.SubmitChanges(); } #endregion } The two methods for adding and deleting UserCourses are: Service Methods for Adding and Deleting UserCourses: public void AddUserCourse(int courseId) { UserCourse uc = new UserCourse(); uc.IdCourse = courseId; uc.IdUser = UserId; uc.DateCreated = DateTime.Now; uc.DateAmended = DateTime.Now; uc.Role = "Pupil"; uc.CourseNotes = string.Empty; uc.ActiveStepIndex = 0; UserCoursesRepository.Add(uc); UserCoursesRepository.Save(); } public void DeleteUserCourse(int courseId) { var uc = (UserCoursesRepository.Query.Where(x => x.IdUser == UserId && x.IdCourse == courseId)).Single(); UserCoursesRepository.Delete(uc); UserCoursesRepository.Save(); } Ajax I am using Ajax via Ajax.BeginForm I don't think that is relevant. ASP.NET MVC 3 I am using mvc3, but don't think that is relevant: the errors are related to model code.

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• StoreGeneratedPattern T4 EntityFramework concern

  - by LoganWolfer

  Hi everyone, Here's the situation : I use SQL Server 2008 R2, SQL Replication, Visual Studio 2010, EntityFramework 4, C# 4. The course-of-action from our DBA is to use a rowguid column for SQL Replication to work with our setup. These columns need to have a StoreGeneratedPattern property set to Computed on every one of these columns. The problem : Every time the T4 template regenerate our EDMX (ADO.NET Entity Data Model) file (for example, when we update it from our database), I need to go manually in the EDMX XML file to add this property to every one of them. It has to go from this : <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" /> To this : <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" StoreGeneratedPattern="Computed"/> The solution : I'm trying to find a way to customize an ADO.NET EntityObject Generator T4 file to generate a StoreGeneratedPattern="Computed" to every rowguid that I have. I'm fairly new to T4, I only did customization to AddView and AddController T4 templates for ASP.NET MVC 2, like List.tt for example. I've looked through the EF T4 file, and I can't seem to find through this monster where I could do that (and how). My best guess is somewhere in this part of the file, line 544 to 618 of the original ADO.NET EntityObject Generator T4 file : //////// //////// Write PrimitiveType Properties. //////// private void WritePrimitiveTypeProperty(EdmProperty primitiveProperty, CodeGenerationTools code) { MetadataTools ef = new MetadataTools(this); #> /// <summary> /// <#=SummaryComment(primitiveProperty)#> /// </summary><#=LongDescriptionCommentElement(primitiveProperty, 1)#> [EdmScalarPropertyAttribute(EntityKeyProperty=<#=code.CreateLiteral(ef.IsKey(primitiveProperty))#>, IsNullable=<#=code.CreateLiteral(ef.IsNullable(primitiveProperty))#>)] [DataMemberAttribute()] <#=code.SpaceAfter(NewModifier(primitiveProperty))#><#=Accessibility.ForProperty(primitiveProperty)#> <#=code.Escape(primitiveProperty.TypeUsage)#> <#=code.Escape(primitiveProperty)#> { <#=code.SpaceAfter(Accessibility.ForGetter(primitiveProperty))#>get { <#+ if (ef.ClrType(primitiveProperty.TypeUsage) == typeof(byte[])) { #> return StructuralObject.GetValidValue(<#=code.FieldName(primitiveProperty)#>); <#+ } else { #> return <#=code.FieldName(primitiveProperty)#>; <#+ } #> } <#=code.SpaceAfter(Accessibility.ForSetter((primitiveProperty)))#>set { <#+ if (ef.IsKey(primitiveProperty)) { if (ef.ClrType(primitiveProperty.TypeUsage) == typeof(byte[])) { #> if (!StructuralObject.BinaryEquals(<#=code.FieldName(primitiveProperty)#>, value)) <#+ } else { #> if (<#=code.FieldName(primitiveProperty)#> != value) <#+ } #> { <#+ PushIndent(CodeRegion.GetIndent(1)); } #> <#=ChangingMethodName(primitiveProperty)#>(value); ReportPropertyChanging("<#=primitiveProperty.Name#>"); <#=code.FieldName(primitiveProperty)#> = StructuralObject.SetValidValue(value<#=OptionalNullableParameterForSetValidValue(primitiveProperty, code)#>); ReportPropertyChanged("<#=primitiveProperty.Name#>"); <#=ChangedMethodName(primitiveProperty)#>(); <#+ if (ef.IsKey(primitiveProperty)) { PopIndent(); #> } <#+ } #> } } private <#=code.Escape(primitiveProperty.TypeUsage)#> <#=code.FieldName(primitiveProperty)#><#=code.StringBefore(" = ", code.CreateLiteral(primitiveProperty.DefaultValue))#>; partial void <#=ChangingMethodName(primitiveProperty)#>(<#=code.Escape(primitiveProperty.TypeUsage)#> value); partial void <#=ChangedMethodName(primitiveProperty)#>(); <#+ } Any help would be appreciated. Thanks in advance. EDIT : Didn't find answer to this problem yet, if anyone have ideas to automate this, would really be appreciated.

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• A Rose by Any Other Name..

  - by Geoff N. Hiten

  It is always a good start when you can steal a title line from one of the best writers in the English language.  Let’s hope I can make the rest of this post live up to the opening.  One recurring problem with SQL server is moving databases to new servers.  Client applications use a variety of ways to resolve SQL Server names, some of which are not changed easily <cough SharePoint /cough>.  If you happen to be using default instances on both the source and target SQL Server, then the solution is pretty simple.  You create (or bug the network admin until she creates) two DNS “A” records. One points the old name to the new IP address.  The other creates a new alias for the old server, since the original system name is now redirected.  Note this will redirect ALL traffic from the old server to the new server, including RDP and file share connection attempts.    Figure 1 – Microsoft DNS MMC Snap-In   Figure 2 – DNS New Host Dialog Box Both records are necessary so you can still access the old server via an alternate name. Server Role IP Address Name Alias Source 10.97.230.60 SQL01 SQL01_Old Target 10.97.230.80 SQL02 SQL01 Table 1 – Alias List If you or somebody set up connections via IP address, you deserve to have to go to each app and fix it by hand.  That is the only way to fix that particular foul-up. If have to deal with Named Instances either as a source or a target, then it gets more complicated.  The standard fix is to use the SQL Server Configuration Manager (or one of its earlier incarnations) to create a SQL client alias to redirect the connection.  This can be a pain installing and configuring the app on multiple client servers.  The good news is that SQL Server Configuration Manager AND all of its earlier versions simply write a few registry keys.  Extracting the keys into a .reg file makes centralized automated deployment a snap. If the client is a 32-bit system, you have to extract the native key.  If it is a 64-bit, you have to extract the native key and the WoW (32 bit on 64 bit host) key. First, pick a development system to create the actual registry key.  If you do this repeatedly, you can simply edit an existing registry file.  Create the entry using the SQL Configuration Manager.  You must use a 64-bit system to create the WoW key.  The following example redirects from a named instance “SQL01\SQLUtiluty” to a default instance on “SQL02”.   Figure 3 – SQL Server Configuration Manager - Native Figure 3 shows the native key listing. Figure 4 – SQL Server Configuration Manager – WoW If you think you don’t need the WoW key because your app is 64 it, think again.  SQL Server Management Server is a 32-bit app, as are most SQL test utilities.  Always create both keys for 64-bit target systems. Now that the keys exist, we can extract them into a .reg file. Fire up REGEDIT and browse to the following location:  HKLM\Software\Microsoft\MSSQLServer\Client\ConnectTo.  You can also search the registry for the string value of one of the server names (old or new). Right click on the “ConnectTo” label and choose “Export”.  Save with an appropriate name and location.  The resulting file should look something like this: Figure 5 – SQL01_Alias.reg Repeat the process with the location: HKLM\Software\Wow6432Node\Microsoft\MSSQLServer\Client\ConnectTo Note that if you have multiple alias entries, ALL of the entries will be exported.  In that case, you can edit the file and remove the extra aliases. You can edit the files together into a single file.  Just leave a blank line between new keys like this: Figure 6 – SQL01_Alias_All.reg Of course if you have an automatic way to deploy, it makes sense to have an automatic way to Un-deploy.  To delete a registry key, simply edit the .reg file and replace the target with a “-“ sign like so. Figure 7 – SQL01_Alias_UNDO.reg Now we have the ability to move any database to any server without having to install or change any applications on any client server.  The whole process should be transparent to the applications, which makes planning and coordinating database moves a far simpler task.

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• sp_send_dbmail attach files stored as varbinary in database

  - by Mindstorm Interactive

  I have a two part question relating to sending query results as attachments using sp_send_dbmail. Problem 1: Only basic .txt files will open. Any other format like .pdf or .jpg are corrupted. Problem 2: When attempting to send multiple attachments, I receive one file with all file names glued together. I'm running SQL Server 2005 and I have a table storing uploaded documents: CREATE TABLE [dbo].[EmailAttachment]( [EmailAttachmentID] [int] IDENTITY(1,1) NOT NULL, [MassEmailID] [int] NULL, -- foreign key [FileData] [varbinary](max) NOT NULL, [FileName] [varchar](100) NOT NULL, [MimeType] [varchar](100) NOT NULL I also have a MassEmail table with standard email stuff. Here is the SQL Send Mail script. For brevity, I've excluded declare statements. while ( (select count(MassEmailID) from MassEmail where status = 20 )>0) begin select @MassEmailID = Min(MassEmailID) from MassEmail where status = 20 select @Subject = [Subject] from MassEmail where MassEmailID = @MassEmailID select @Body = Body from MassEmail where MassEmailID = @MassEmailID set @query = 'set nocount on; select cast(FileData as varchar(max)) from Mydatabase.dbo.EmailAttachment where MassEmailID = '+ CAST(@MassEmailID as varchar(100)) select @filename = '' select @filename = COALESCE(@filename+ ',', '') +FileName from EmailAttachment where MassEmailID = @MassEmailID exec msdb.dbo.sp_send_dbmail @profile_name = 'MASS_EMAIL', @recipients = '[email protected]', @subject = @Subject, @body =@Body, @body_format ='HTML', @query = @query, @query_attachment_filename = @filename, @attach_query_result_as_file = 1, @query_result_separator = '; ', @query_no_truncate = 1, @query_result_header = 0; update MassEmailset status= 30,SendDate = GetDate() where MassEmailID = @MassEmailID end I am able to successfully read files from the database so I know the binary data is not corrupted. .txt files only read when I cast FilaData to varchar. But clearly original headers are lost. It's also worth noting that attachment file sizes are different than the original files. That is most likely due to improper encoding as well. So I'm hoping there's a way to create file headers using the stored mimetype, or some way to include file headers in the binary data? I'm also not confident in the values of the last few parameters, and I know coalesce is not quite right, because it prepends the first file name with a comma. But good documentation is nearly impossible to find. Please help!

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• Delphi Prism and LINQ to SQL / Entity Framework

  - by Vegar

  I have found many posts and examples of using LINQ-syntax in Delphi Prism (Oxygene), but I have never found anything on LINQ to SQL or Entity Framework. Is it possible to use LINQ to SQL or Entity Framework together with Prism? Where can I found such an example? Update: Olaf is giving an answer through his blog The question is now if any visual tools and code generation is provided, or if everything must be done by hand... Second update: Olaf has answered the tool/code generation-question in a comment on his site: The class designer is there, but there is no Pascal code gen. According to marc hoffman that is currently not on their list. For now you have to live with manual mapping. I guess, if you had Visual Studio (not just the VS shell), that you could add a C# library project to your solution, reference that from your Prism project. Then create the Table-Class mapping in the C# project using the visual designer. Maybe somewhat ugly, but possibly the key to get the Designer + CodeGen integrated into Prism. Who cares what language is used for the mapping . I will say this is a 1 - 0 to c# vs prism. If I did not care which language is used for the mapping - why should I care about which language is used for the rest?

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• Help catching AV with WinDbg and ADPlus 7.0

  - by Stoune

  I want to catch Memory Access Violation in SQL Server Compact Edition like this described at http://debuggingblog.com/wp/2009/02/18/memory-access-violation-in-sql-server-compact-editionce/ The suggested config is: CRASH Quiet MyApp.exe NoDumpOnFirstChance clr;av FullDump gn I download latest Debugging Tools and observe what Microsoft rewrite adplus tool into managed code and change syntax of config File. I rewrite config file like this: <ADPlus Version="2"> <Settings> <RunMode>Crash</RunMode> <Option>Quiet</Option> <Option>NoDumpOnFirst</Option> <Sympath>c:\symbols\</Sympath> <OutputDir>c:\work\output\</OutputDir> <ProcessName>c:\work\app\output\MyApp.exe</ProcessName> </Settings> <Exceptions><!--to get the full dump on clr access violation--> <Exception Code="clr;av"> <Actions1>FullDump</Actions1> <ReturnAction1>gn</ReturnAction1> </Exception> </Exceptions> </ADPlus> And I get error "Couldn't find exception with code: clr;av". If I understand right It didn't load sos extension, but I can't find the right section and syntax that I should use to load it. adplus_old.vbs - for some reasons didn't launch process on Windows 7. WinDBG 6.12.0002.633 X86 ADPlus Engine Version: 7.01.002 02/27/2009 Maybe someone has a working example of config of debugging .NET app with latest adplus.exe?

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• Weblogic JDBC datasource,java.sql.SQLException: Cannot obtain XAConnection weblogic.common.resourcep

  - by gauravkarnatak

  I am using weblogic JDBC datasource and my DB is oracle 10g,below is the configuration. It used to work fine but suddenly it started giving problem,please see below exception. Weblogic JDBC datasource,java.sql.SQLException: Cannot obtain XAConnection weblogic.common.resourcepool.ResourceLimitException: No resources currently available in pool <?xml version="1.0" encoding="UTF-8"?> <jdbc-data-source xmlns="http://www.bea.com/ns/weblogic/90" xmlns:sec="http://www.bea.com/ns/weblogic/90/security" xmlns:wls="http://www.bea.com/ns/weblogic/90/security/wls" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/920 http://www.bea.com/ns/weblogic/920.xsd" XL-Reference-DS jdbc:oracle:oci:@abc.COM oracle.jdbc.driver.OracleDriver user DEV_260908 password password dll ocijdbc10 protocol oci oracle.jdbc.V8Compatible true baseDriverClass oracle.jdbc.driver.OracleDriver 1 100 1 true SQL SELECT 1 FROM DUAL DataJndi OnePhaseCommit This exception is coming on dev environment where connected user is only one. I know, this is related to pool max size but I also suspect this could be due to oracle,might be oracle isn't able to create connections. below are my queries Is there any debug/logging parameter to enable datasource logging,so that I can check no of connections acquired,released and unused in logs ? How to check oracle connection limit for a particular user ?

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• Why doesn't Data Driven Subscription in SSRS 2005 like my Stored Procedure?

  - by bert

  I'm trying to define a Data Driven Subscription for a report in SSRS 2005. In Step 3 of the set up you're asked for: " a command or query that returns a list of recipients and optionally returns fields used to vary delivery settings and report parameter values for each recipient" This I have written and it returns the data without a hitch. I press next and it rolls onto the next screen in the set up which has all the variables to set for the DDS and in each case it has an option to "Select Value From Database" I select this radio button and press the drop down. No fields are available to me. Now the only way I could vary the number of parameters returned by the SP was to have the SP write the SQL to an nvarchar variable and then at the end execute the variable as sql. I have tested this in the Management Studio and it returns the expected fields. I even named them after the fields in SSRS but the thing won't put the field names into the dropdowns. I've even taken the query body out of the Stored Proc, verified it in SSRS and then tried that. It doesn't work either. Can anyone shed any light into what I'm doing wrong?

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• We have multiple app servers running against a single database. How do I ensure that each row in a q

  - by Dave

  We have about 7 app servers running .NET windows services that ping a single sql server 2005 queue table and fetch a fixed amount of records to process at fixed intervals. The amount of records to process and the amount of time between fetches are both configurable and are initially set to 100 and 30 seconds initially. Currently, my queue table has an int status column which can be either "Ready, Processing, Complete, Error". The proc that fetches the records has a sql transaction with the following code inside the transaction: 1) Fetch x number of records into temp table where the status is "Ready". The select uses a holdlock hint 2) Update the status on those records in the Queue table to "Processing" The .NET services do some processing that may take seconds or even minutes per record. Another proc is called per record that simply updates the status to "Complete". The update proc has no transaction as I'm leaning on the implicit transaction as part of the update clause here. I don't know the traffic exceptions for this but figure it will be under 10k records per day. Is this the best way to handle this scenario? If so, are there any details that I've left out, such as a hint here or there? Thanks! Dave

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• Error in Visual Studio 2008 with SSRS 2005 report projects

  - by Tj Kellie

  Has anyone found a good workaound for opening or editing an SSRS 2005 report project with Visual Studio 2008 yet? Will the SQL server 2008 tools be the migration path for these report projects in the future? I really dont want to have to keep VS2005 installed forever just to update SSRS reports. After an upgrade to VS2008 an existing solution that contains a VS2005 SSRS reports project will not open. From what I understand the SQL Server 2005 tools dont know about VS2008 so they will not integrate into the IDE. So currently I switch back to VS2005 for any updates to this project, and get an error loading project message everytime I open the solution in 2008. EDIT on solution: I was able to install the shared component for BDIS from the SQL2008 disc and am now able to open and update my SSRS 2005 .rdl project items within VS2008. Note to others: If you edit your SSRS 2005 reports in VS2008 and re-save you will not be able to edit them in VS2005 anymore, or deploy them to a 2005 server. They are up-converted to 2008 report files.

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• Using a Case statement within the values section of an Insert statement

  - by mattgcon

  Please forgive my ignorance and poor SQL programming skills but I am normally a basic SQL developer. I need to create a trigger off the insertion of data in one table to insert different data into another table. Within this trigger I need to insert certain data into the new table based upon values within the newly inserted data from the original table. I am totally confused on this. i thought I would be creative and use a case statement within teh Values section but it is not working. Can anyone please help me on this? (below is the code for the trigger that I have as of now) INSERT INTO dbo.WebOnlineUserPeopleDashboard ( ONLINE_USERACCOUNT_ID, ONLINE_ROOMS_DIRECTORY, ONLINE_ROOMS_LIST, ONLINE_ROOMS_PLACEMENT, ONLINE_ROOMS_MANAGEMENT, ONLINE_MAILINGLIST_DIRECTORY, ONLINE_MAILINGLIST_LIST, ONLINE_MAILINGLIST_MEMBERS, ONLINE_MAILINGLIST_MANAGER, ONLINE_PEOPLESEARCH_DIRECTORY ) VALUES IF (SELECT ONLINE_PEOPLE_FULL_ACCESS FROM INSERTED) = 1 BEGIN SELECT ONLINE_USERACCOUNT_ID, 1, 1, 1, 1, 1, 1, 1, 1, 1 FROM INSERTED END ELSE IF (SELECT ONLINE_PEOPLE_FULL_ACCESS FROM INSERTED) = 0 BEGIN SELECT ONLINE_USERACCOUNT_ID, 0, 0, 0, 0, 0, 0, 0, 0, 0 FROM INSERTED END ELSE BEGIN SELECT ONLINE_USERACCOUNT_ID, CASE --DIRECTORY WHEN ONLINE_PEOPLE_ROOMS_PLACEMENT_FULL_ACCESS = 1 OR ONLINE_PEOPLE_ROOMS_PLACEMENT_VIEW = 1 OR ONLINE_PEOPLE_ROOMS_PLACEMENT_ADD = 1 OR ONLINE_PEOPLE_ROOMS_PLACEMENT_UPDATE = 1 OR ONLINE_PEOPLE_ROOMS_PLACEMENT_DELETE = 1 THEN 1 WHEN ONLINE_PEOPLE_ROOMS_PLACEMENT_FULL_ACCESS = 0 THEN 0 END, CASE WHEN ONLINE_PEOPLE_ROOMS_PLACEMENT_VIEW = 1 THEN 1 WHEN ONLINE_PEOPLE_ROOMS_PLACEMENT_VIEW = 0 THEN 0 END, CASE WHEN ONLINE_PEOPLE_ROOMS_PLACEMENT_ADD = 1 OR ONLINE_PEOPLE_ROOMS_PLACEMENT_UPDATE = 1 OR ONLINE_PEOPLE_ROOMS_PLACEMENT_DELETE = 1 THEN 1 WHEN ONLINE_PEOPLE_ROOMS_PLACEMENT_ADD = 0 AND ONLINE_PEOPLE_ROOMS_PLACEMENT_UPDATE = 0 AND ONLINE_PEOPLE_ROOMS_PLACEMENT_DELETE = 0 THEN 0 END, CASE WHEN ONLINE_PEOPLE_ROOMS_MANAGEMENT_FULL_ACCESS = 1 THEN 1 WHEN ONLINE_PEOPLE_ROOMS_MANAGEMENT_FULL_ACCESS = 0 THEN 0 END, CASE WHEN ONLINE_PEOPLE_MAILING_LISTS_FULL_ACCESS = 1 OR ONLINE_PEOPLE_MAILING_LISTS_VIEW = 1 OR ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_ADD = 1 OR ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_UPDATE = 1 OR ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_DELETE = 1 THEN 1 WHEN ONLINE_PEOPLE_MAILING_LISTS_FULL_ACCESS = 0 THEN 0 END, CASE WHEN ONLINE_PEOPLE_MAILING_LISTS_VIEW = 1 THEN 1 WHEN ONLINE_PEOPLE_MAILING_LISTS_VIEW = 0 THEN 0 END, CASE WHEN ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_ADD = 1 OR ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_UPDATE = 1 OR ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_DELETE = 1 THEN 1 WHEN ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_ADD = 0 AND ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_UPDATE = 0 AND ONLINE_PEOPLE_MAILING_LISTS_MEMBERS_DELETE = 0 THEN 0 END, CASE WHEN ONLINE_PEOPLE_MAILING_LISTS_ADD = 1 OR ONLINE_PEOPLE_MAILING_LISTS_UPDATE = 1 OR ONLINE_PEOPLE_MAILING_LISTS_DELETE = 1 THEN 1 WHEN ONLINE_PEOPLE_MAILING_LISTS_ADD = 1 OR ONLINE_PEOPLE_MAILING_LISTS_UPDATE = 1 OR ONLINE_PEOPLE_MAILING_LISTS_DELETE = 1 THEN 0 END, CASE WHEN ONLINE_PEOPLE_PEOPLE_SEARCH = 1 THEN 1 WHEN ONLINE_PEOPLE_PEOPLE_SEARCH = 0 THEN 0 END FROM INSERTED END END

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• django-mptt fields showing up twice, breaking SQL

  - by Dominic Rodger

  I'm using django-mptt to manage a simple CMS, with a model called Page, which looks like this (most presumably irrelevant fields removed): class Page(mptt.Model, BaseModel): title = models.CharField(max_length = 20) slug = AutoSlugField(populate_from = 'title') contents = models.TextField() parent = models.ForeignKey('self', null=True, blank=True, related_name='children', help_text = u'The page this page lives under.') removed fields are called attachments, headline_image, nav_override, and published All works fine using SQLite, but when I use MySQL and try and add a Page using the admin (or using ModelForms and the save() method), I get this: ProgrammingError at /admin/mycms/page/add/ (1110, "Column 'level' specified twice") where the SQL generated is: 'INSERT INTO `kaleo_page` (`title`, `slug`, `contents`, `nav_override`, `parent_id`, `published`, `headline_image_id`, `lft`, `rght`, `tree_id`, `level`, `lft`, `rght`, `tree_id`, `level`) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)' for some reason I'm getting the django-mptt fields (lft, rght, tree_id and level) twice. It works in SQLite presumably because SQLite is more forgiving about what it accepts than MySQL. get_all_field_names() also shows them twice: >>> Page._meta.get_all_field_names() ['attachments', 'children', 'contents', 'headline_image', 'id', 'level', 'lft', 'nav_override', 'parent', 'published', 'rght', 'slug', 'title', 'tree_id'] Which is presumably why the SQL is bad. What could I have done that would result in those fields appearing twice in get_all_field_names()?

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• Entity Framework query not returning correctly enumerated results.

  - by SkippyFire

  I have this really strange problem where my entity framework query isn't enumerating correctly. The SQL Server table I'm using has a table with a Sku field, and the column is "distinct". It isn't a key, but it doesn't contain any duplicate values. Using actual SQL with where, distinct and group by cluases I have confirmed this. However, when I do this: // Not good foreach(var product in dc.Products) or // Not good foreach(var product in dc.Products.ToList()) or // Not good foreach(var product in dc.Products.OrderBy(p => p.Sku)) the first two objects that are returned ARE THE SAME!!! The third item was technically the second item in the table, but then the fourth item was the first row from the table again!!! The only solution I have found is to use the Distinct extension method, which shouldn't really do anything in this situation: // Good foreach(var product in dc.Products.ToList().Distinct()) Another weird thing about this is that the count of the resulting queries is the same!!! So whether or not the resulting enumerable has the correct results or duplicates, I always get the number of rows in the actual table! (No I don't have a limit clause anywhere). What could possibly cause this!?!?!?

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• How do I eliminate Error 3002?

  - by Andrew

  Say I have the following table definitions in SQL Server 2008: CREATE TABLE Person (PersonId INT IDENTITY NOT NULL PRIMARY KEY, Name VARCHAR(50) NOT NULL, ManyMoreIrrelevantColumns VARCHAR(MAX) NOT NULL) CREATE TABLE Model (ModelId INT IDENTITY NOT NULL PRIMARY KEY, ModelName VARCHAR(50) NOT NULL, Description VARCHAR(200) NULL) CREATE TABLE ModelScore (ModelId INT NOT NULL REFERENCES Model (ModelId), Score INT NOT NULL, Definition VARCHAR(100) NULL, PRIMARY KEY (ModelId, Score)) CREATE TABLE PersonModelScore (PersonId INT NOT NULL REFERENCES Person (PersonId), ModelId INT NOT NULL, Score INT NOT NULL, PRIMARY KEY (PersonId, ModelId), FOREIGN KEY (ModelId, Score) REFERENCES ModelScore (ModelId, Score)) The idea here is that each Person may have only one ModelScore per Model, but each Person may have a score for any number of defined Models. As far as I can tell, this SQL should enforce these constraints naturally. The ModelScore has a particular "meaning," which is contained in the Definition. Nothing earth-shattering there. Now, I try translating this into Entity Framework using the designer. After updating the model from the database and doing some editing, I have a Person object, a Model object, and a ModelScore object. PersonModelScore, being a join table, is not an object but rather is included as an association with some other name (let's say ModelScorePersonAssociation). The mapping details for the association are as follows: - Association - Maps to PersonModelScore - ModelScore ModelId : Int32 <=> ModelId : int Score : Int32 <=> Score : int - Person PersonId : Int32 <=> PersonId : int On the right-hand side, the ModelId and PersonId values have primary key symbols, but the Score value does not. Upon compilation, I get: Error 3002: Problem in Mapping Fragment starting at line 5190: Potential runtime violation of table PersonModelScore's keys (PersonModelScore.ModelId, PersonModelScore.PersonId): Columns (PersonModelScore.PersonId, PersonModelScore.ModelId) are mapped to EntitySet ModelScorePersonAssociation's properties (ModelScorePersonAssociation.Person.PersonId, ModelScorePersonAssociation.ModelScore.ModelId) on the conceptual side but they do not form the EntitySet's key properties (ModelScorePersonAssociation.ModelScore.ModelId, ModelScorePersonAssociation.ModelScore.Score, ModelScorePersonAssociation.Person.PersonId). What have I done wrong in the designer or otherwise, and how can I fix the error? Many thanks!

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• Custom RoleProvider: Can't insert record in UsersInRole Table

  - by mahr.g.mohyuddin

  Hi, I have implemented a LINQ to SQL based RoleProvider, when I assign role to a user following exception is thrown while AddUsersToRoles method is called. I have defined a composite primary key userid & roleId on this table, it still throwing this exception: Can't perform Create, Update or Delete operations on 'Table(UsersInRole)' because it has no primary key. My LinQ to SQL implementation of AddUsersToRoles method is as follows. It breaks at db.UsersInRoles.InsertOnSubmit(userInRole); using (RussarmsDataContext db = new RussarmsDataContext()) { List<UsersInRole> usersInRole = new List<UsersInRole>(); foreach (string username in usernames) { foreach (string rolename in rolenames) { UsersInRole userInRole = new UsersInRole(); object userId = ProvidersUtility.GetUserIdByUserName(username,applicationName); object roleId = ProvidersUtility.GetRoleIdByRoleName(rolename,applicationName); if (userId != null && roleId != null) { userInRole.UserId = (Guid)userId; userInRole.RoleId = (Guid)roleId; db.UsersInRoles.InsertOnSubmit(userInRole); } } } try { // db.UsersInRoles.InsertAllOnSubmit(usersInRole); db.SubmitChanges(); } catch (ChangeConflictException) { db.ChangeConflicts.ResolveAll(RefreshMode.OverwriteCurrentValues); db.SubmitChanges(); } } Any help will be appreciated. Thanks.

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• Create System.Data.Linq.Table in Code for Testing

  - by S. DePouw

  I have an adapter class for Linq-to-Sql: public interface IAdapter : IDisposable { Table<Data.User> Activities { get; } } Data.User is an object defined by Linq-to-Sql pointing to the User table in persistence. The implementation for this is as follows: public class Adapter : IAdapter { private readonly SecretDataContext _context = new SecretDataContext(); public void Dispose() { _context.Dispose(); } public Table<Data.User> Users { get { return _context.Users; } } } This makes mocking the persistence layer easy in unit testing, as I can just return whatever collection of data I want for Users (Rhino.Mocks): Expect.Call(_adapter.Users).Return(users); The problem is that I cannot create the object 'users' since the constructors are not accessible and the class Table is sealed. One option I tried is to just make IAdapter return IEnumerable or IQueryable, but the problem there is that I then do not have access to the methods ITable provides (e.g. InsertOnSubmit()). Is there a way I can create the fake Table in the unit test scenario so that I may be a happy TDD developer?

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• cryptic error message: Length of Bind host variable exceeds MaxLength

  - by janetsmith

  Hi, I've encountered a cryptic error message thrown by Sybase IQ server. com.sybase.jdbc2.jdbc.SybSQLException: ASA Error -1001019: Function not supported on varchars longer than 255 Length of Bind host variable exceeds MaxLength , -- (df_Heap.cxx 2145) at com.sybase.jdbc2.tds.Tds.processEed(Tds.java:2636) at com.sybase.jdbc2.tds.Tds.nextResult(Tds.java:1996) at com.sybase.jdbc2.jdbc.ResultGetter.nextResult(ResultGetter.java:69) at com.sybase.jdbc2.jdbc.SybStatement.nextResult(SybStatement.java:204) at com.sybase.jdbc2.jdbc.SybStatement.nextResult(SybStatement.java:187) at com.sybase.jdbc2.jdbc.SybStatement.updateLoop(SybStatement.java:1642) at com.sybase.jdbc2.jdbc.SybStatement.executeUpdate(SybStatement.java:1625) at com.sybase.jdbc2.jdbc.SybPreparedStatement.executeUpdate(SybPreparedStatement.java:91) at ibs.dao.CM3RM1DAO.updateToTable(CM3RM1DAO.java:197) at ibs.dao.CM3RM1DAO.isXMLProcessed(CM3RM1DAO.java:88) at ibs.xml.parser.XMLParser.parsingXMLIntoBO(XMLParser.java:2125) at ibs.common.util.MainClass.main(MainClass.java:74) We have several columns (DESCRIPTION etc.) which are of type varchar(4000). However I can update them directly without having any error. And, I don't see any code specifying any bind variables, so I have no idea where the message comes from. This is the code (I've modified it a bit): String sql = "UPDATE TABLEX SET " + "COMPANY = ?, CUSTOMER_REFERENCE= ?, " + "STATUS = ?, CONTACT_FIRST_NAME = ?, CONTACT_LAST_NAME = ?, " + "SEVERITY = ?, PRIORITY_CODE = ?, REQUESTEDDATE = ?, " + "CLOSE_TIME = ?, LEAD_TIME = ?, CHANGE_REASON = ?, MODTIME = ? WHERE NUMBER = ?"; stmt = conn.prepareStatement(sql); for loop here { stmt.setString(...); . . stmt.executeUpdate(); } Any help is appreciated

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• DataTableReader is invalid for current DataTable 'TempTable'

  - by Sk93

  Hi, I'm getting the following error whenever my code creates a DataTableReader from a valid DataTable Object: "DataTableReader is invalid for current DataTable 'TempTable'." The thing is, if I reboot my machine, it works fine for an undertimed amount of time, then dies with the above. The code that throws this error could have been working fine for hours and then: bang. you get this error. It's not limited to one line either; it's every single location that a DataTableReader is used. Also, this error does NOT occur on the production web server - ever. This is an example of one of the lines where it falls over: If I step over this line, I get this: However, if I do this in the immediate window: I get no problems. Same goes if I actually use that line in the code. This has been driving me nuts for the best part of a week, and I've failed to find anything on Google that could help (as I'm pretty positive this isn't a coding issue). Some technical info: DEV Box: Vista 32bit (with all current windows updates) Visual Studio 2008 v9.0.30729.1 SP dotNet Framework 3.5 SP1 SQL Server: Microsoft SQL Server 2005 Standard Edition- 9.00.4035.00 (X64) Windows 2003 64bit (with all current windows updates) Web Server: Windows 2003 64bit (with all current windows updates) any help, ideas, or advice would be greatly appreciated! Cheers, Ian

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• Weblogic 10.3, JDBC, Oracle, SQL - Table or View does not exist

  - by shelfoo

  Hi, I've got a really odd issue that I've not had any success googling for. It started happening with no changes to the DB, connection settings, code etc. Problem is, when accessing a servlet, one of the EJB's is doing a direct SQL call, very simple "select \n" + " value, \n" + " other_value \n" + " from \n" + " some_table \n" + " where some_condition = ? " That's obviously not the direct SQL, but pretty close. For some reason, this started returning an error stating "ORA-00942: table or view does not exist". The table exists, and the kicker is if I hook in a debugger, change a space or something minor (not changing the query itself) in the query, and hot-deploy the change, it works fine. This isn't the first time I've run across this. It only seems to happen in dev environments (haven't seen it in q/a, sandbox, or production yet), is not always replicable, and driving me seriously insane. By not always replicable I mean that occasionally a clean build & redeploy will sometimes fix the problem, but not always. It's not always the same table (although if the error occurs it continues with the same query). Just throwing a feeler out there to see if anybody has run into issues like this before, and what they may have discovered to fix it.

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• "Cannot open user default database" error with "User Instance=True"

  - by Keith

  I have a desktop application that uses Sql user instancing. This is my connection string: "Data Source=.\SqlExpress; AttachDbFilename=C:\path\file.mdf; Integrated Security=True; User Instance=True; Connect Timeout=100;" My application creates this DB, downloads a load of data into it from a web service and then does a lot of actions with it. The problem comes when I attempt to re-open the connection. I get a SqlException: "Cannot open user default database. Login failed. Login failed for user 'myDomain\myusername'." This error makes no sense in this context - I have no default database. I'm logging in to an instance created just for the current application, running separately from SqlExpress. There's no other way to connect to this DB. If I start the SqlExpress service and connect to the default instance it won't be visible. It only exists for this application. The file on disk is locked by the SqlExpress instance service running under the application. if I stop the app and restart it the connection works first time, but fails on re-opening. If I just stop the app I can delete the .mdf files and begin again, but it still crashes when I re-open the connection. As my app started the instance running as me my current user should have access to every DB in the instance. This doesn't happen for other users of the same code, which suggests that it's a SQL config issue. Does anyone have any idea what causes this and how to work around it?

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• Recommended (remote) backup technique for SQL Compact?

  - by Cool Jon

  Hello. Is there a generally recommended approach to backing up an SQL CE/SQLite database over the Internet? The client source is .NET/Windows based, the backup destination runs Ubuntu. I am using a small SQL CE database and have been trying to figure out the most reasonable approach to doing this. The file size (in terms of transfer time/bandwidth) isn't a big deal. I had a look around, and so far the things I've given thought are: Online backup services (Dropbox, Mozy) Opening an FTP/SFTP connection Writing a custom protocol with public/private keys Unsure regarding #1 because I doubt they would like it if somebody transferred gigabytes of data using a POST; and they do not seem to offer native (or .NET) APIs. FTP/SFTP seems risky in terms of security and privileges (as the password/key would need to be stored on the client side). With the right user group/user privileges this may work. Custom protocol seems overkill, which is why I am hoping somebody has already defined a reasonable API for language/platform-independent backups over the Internet. Any hints S.O.?

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