System gives error randomly

V5 Issue
1

Hi Folks,

I’m having some errors randomly. system works without any issues some days, but al of a sudden it starts giving errors randomly. please find the log files below. has anyone any idea about the problem or experienced that before? thanks in advance.

[Exception Info 1]

Top-level Exception
Type: System.Data.ProviderIncompatibleException
Message: An error occurred while getting provider information from the database. This can be caused by Entity Framework using an incorrect connection string. Check the inner exceptions for details and ensure that the connection string is correct.
Source: EntityFramework
Stack Trace: at System.Data.Entity.ModelConfiguration.Utilities.DbProviderServicesExtensions.GetProviderManifestTokenChecked(DbProviderServices providerServices, DbConnection connection)
at System.Data.Entity.ModelConfiguration.Utilities.DbConnectionExtensions.GetProviderInfo(DbConnection connection, DbProviderManifest& providerManifest)
at System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection)
at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext)
at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input)
at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
at System.Data.Entity.Internal.InternalContext.ForceOSpaceLoadingForKnownEntityTypes()
at System.Data.Entity.DbContext.System.Data.Entity.Infrastructure.IObjectContextAdapter.get_ObjectContext()
at Samba.Infrastructure.Data.SqlData.EFWorkspace..ctor(CommonDbContext context)
at Samba.Persistance.Data.WorkspaceFactory.Create()
at Samba.Presentation.Services.Common.DataGeneration.DataCreationService..ctor()
at Samba.Presentation.Bootstrapper.InitializeShell()

Inner Exception 1
Type: System.Data.ProviderIncompatibleException
Message: The provider did not return a ProviderManifestToken string.
Source: System.Data.Entity
Stack Trace: at System.Data.Common.DbProviderServices.GetProviderManifestToken(DbConnection connection)
at System.Data.Entity.ModelConfiguration.Utilities.DbProviderServicesExtensions.GetProviderManifestTokenChecked(DbProviderServices providerServices, DbConnection connection)

Inner Exception 2
Type: System.Data.SqlClient.SqlException
Message: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Source: .Net SqlClient Data Provider
Stack Trace: at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling, SqlAuthenticationProviderManager sqlAuthProviderManager)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at System.Data.SqlClient.SqlProviderServices.UsingConnection(SqlConnection sqlConnection, Action1 act) at System.Data.SqlClient.SqlProviderServices.UsingMasterConnection(SqlConnection sqlConnection, Action1 act)
at System.Data.SqlClient.SqlProviderServices.GetDbProviderManifestToken(DbConnection connection)
at System.Data.Common.DbProviderServices.GetProviderManifestToken(DbConnection connection)

Inner Exception 3
Type: System.ComponentModel.Win32Exception
Message: The network path was not found
Source:

2

This error seems to be an SQL Server connection problem. Maybe it’s about the network connection or something else.

3

SambaPOS can’t connect to SQL Server. This is 100% network related (unless SQL server is installed on the same computer*).

Check your network connections on the terminal and your server computer that has SQL server installed. If you’re using wifi, check you’re still connected and ensure the wifi network hasn’t changed (always best to ensure only the correct wifi network is set in “known networks”).

Relevant part of the error:

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

and

Inner Exception 3
Type: System.ComponentModel.Win32Exception
Message: The network path was not found

*(If SQL server is in fact installed on the same computer that you see this error, it will be the SQL server service has stopped for some reason, or there is some other issue with your database)

4

thank you guys, i just replaced the router lets see if it fixes the problem.