I am getting the following error while using MySql with Entity framework. I have set the default connection timeout to 300000 on the connection string of EntityConnectionStringBuilder. How to resolve this in Entity framework?
Unhandled Exception: System.Data.EntityCommandExecutionException: An
error occurred while reading from the store provider's data reader. See the
inner exception for details. ---> MySql.Data.MySqlClient.MySqlException: Fatal
error encountered during data read. ---> MySql.Data.MySqlClient.MySqlException:
Reading from the stream has failed. ---> System.IO.EndOfStreamException: Attempted
to read past the end of the stream.
Update: How can we set net_read_timeout for ado.net entity framework?
Like this
data.Database.ExecuteSqlCommand("set net_write_timeout=99999; set net_read_timeout=99999");
what does the inner exception say?
Unhandled Exception: System.Data.EntityCommandExecutionException does not point to a timeout error, it could be something as simple as an int that needs to be nullable that is used in your EF query.
Could you give the query to?
Cheers
Related
While setting up my new environment with a freshly deployed MongoDB container with authentication enabled, I ran into this exception: "An unhandled exception has occurred while executing the request. MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server. ---> System.NotSupportedException: Unable to create an authenticator."
In my case I'm using a connection string like this example: mongodb://USER:PASSWORD#HOST:27017/?authMechanism=DEFAULT. This string works perfectly fine in MongoDB Compass but not inside my .NET 6.0 application.
If you take a look at the source code of C# MongoDB driver in MongoCredential.cs#L469, you see this exception gets thrown while checking the auth mechanism.
After specifying the exact auth mechanism in the connection string, all exceptions are gone!
example: mongodb://USER:PASSWORD#HOST:27017/?authMechanism=SCRAM-SHA-256
Hope anyone else googeling around will find my answer helpful!
happy coding.
For me this just changed the exception to unable to authenticate using sasl protocol mechanism scram-sha-256
After some trial and error I got it working by changing the connection string to:
mongodb://USER:PASSWORD#HOST:27017/?authSource=admin
I have no idea why this was needed as the default and SCRAM-SHA-256 connectionstrings works fine in other contexts...
Remove the authMechanism=DEFAULT parameter from the connection string
I was connecting to RabbitMQ with easynetQ driver without any issues when all of a sudden. I started getting this error
System.ArgumentException occurred
Message: Exception thrown: 'System.ArgumentException' in System.dll
Additional information: None of the discovered or specified addresses match the socket address family.
Why am i not able to find the rabbit mq server all of a sudden. What would be the root cause of this issue. No network configuration has changed.
Turns out I had the Break on exception setting turned on leading me to believe that the exception was coming through my code. The driver connects to the rabbitmq after the error is thrown.
I have been getting this error in my C# app:
System.Data.EntityException: The underlying provider failed on Open. ---> System.Data.SqlClient.SqlException: A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.) ---> System.ComponentModel.Win32Exception: No process is on the other end of the pipe
The strange part though, is that it only occurs sometimes. I can never seem to reproduce it, and its very random. The userid/password in the connection string is correct, and I haven't messed with any of the SQL server configuration settings. I'm using Entity Framework 6.1.0.
String or binary data would be truncated.
The statement has been terminated.
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: String or binary data would be truncated.
I am getting this exception even after I did undo changes for the page, please someone help me to come out of this. *
You are trying to insert a data (string or binary) longer than the maximum length possible for the target field.
I agree with Morix Dev, your columndefintion is too small.
The exception dosnt report which column is too small. But you could log out the data before insert, and check them against the definition.
I am using the VS2010 + SQL Server CE 3.5 + EF + Framework 4.
I have no problem in reading data from SQL Server CE.
But on inserting data with this code:
EFConn.SaveChanges();
I get an error:
Error: An error occurred while updating the entries. See the inner
exception for details.
please help me...
Error detail :
System.Data.UpdateException was unhandled
Message=An error occurred while updating the entries. See the inner
exception for details.
Source=System.Data.Entity
InnerException: System.Data.EntityCommandCompilationException
Message=An error occurred while preparing the command definition. See the inner exception for details.
Source=System.Data.Entity
InnerException: System.NotSupportedException
Message=Server-generated keys and server-generated values are not supported by SQL Server Compact.
Source=System.Data.SqlServerCe.Entity
SQL CE version 4.0 fixed this problem with its Entity Framework provider.
You can download it from http://www.microsoft.com/en-us/download/details.aspx?id=17876
If you don't want to change SQL CE, you can try to change the field type to uniqueidentifier. You can do this Server-generated keys and server-generated values are not supported by SQL Server Compact
Hope this helps