Entity Framework Timeouts

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I am getting timeouts using the Entity Framework (EF) when using a function import that takes over 30 seconds to complete. I tried the following and have not been able to resolve this issue:

I added Default Command Timeout=300000 to the connection string in the App.Config file in the project that has the EDMX file as suggested here.

This is what my connection string looks like:

<add 
    name="MyEntityConnectionString" 
    connectionString="metadata=res://*/MyEntities.csdl|res://*/MyEntities.ssdl|
       res://*/MyEntities.msl;
       provider=System.Data.SqlClient;provider connection string=&quot;
       Data Source=trekdevbox;Initial Catalog=StarTrekDatabase;
       Persist Security Info=True;User ID=JamesTKirk;Password=IsFriendsWithSpock;
       MultipleActiveResultSets=True;Default Command Timeout=300000;&quot;"
    providerName="System.Data.EntityClient" />

I tried setting the CommandTimeout in my repository directly like so:

private TrekEntities context = new TrekEntities();

public IEnumerable<TrekMatches> GetKirksFriends()
{
    this.context.CommandTimeout = 180;
    return this.context.GetKirksFriends();
}

What else can I do to get the EF from timing out? This only happens for very large datasets. Everything works fine with small datasets.

Here is one of the errors I’m getting:

System.Data.EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details. —> System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

OK – I got this working and it’s silly what happened. I had both the connection string with Default Command Timeout=300000 and the CommandTimeout set to 180. When I removed the Default Command Timeout from the connection string, it worked. So the answer is to manually set the CommandTimeout in your repository on your context object like so:

this.context.CommandTimeout = 180;

Apparently setting the timeout settings in the connection string has no effect on it.

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