NHibernate: how to set connection timeout

Question

Is there any way to globally setup time you would wait for connecting to a given database, before a connection failure in NHibernate (connection timeout)? In ADO.NET you can do it for a single connection like this:

new SqlConnection().ConnectionTimeout = 10;

I found how to setup the time you would wait for a result set, before a command execution failure here (command timeout). But, apparently, that's not what I need

Tother

Answer 1

You can set it on the connection string, "Connection Timeout=x".

Formicary

It is the simpliest way to solve the problem in my case. In some other cases may be better to write a custom connection provider and programatically set IDbConnection.ConnectionTimeout property – Tother

Note that 'x' here is time expressed in seconds. – Cynarra

Isn't this property to specify the time to successfully make a connection not for the time to run queries? – Neutretto

Answer 2

You can use the connection_timeout setting in your NHibernate configuration code. See section 3.4 of the documentation for full details.

The XML configuration for this is as follows...

<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
    <session-factory>
        <property name="dialect">NHibernate.Dialect.MsSql2012Dialect</property>
        <property name="connection.connection_string">
            Server=(local);initial catalog=theDb;Integrated Security=SSPI
        </property>
        <property name="connection_timeout">100</property>
    </session-factory>
</hibernate-configuration>

<!-- other app specific config follows -->

I'm using Fluent NHibernate so my configuration code is as follows...

FluentConfiguration configuration = Fluently.Configure()
                         .Database(MsSqlConfiguration.MsSql2012.ConnectionString(ConnectionString))
                         .ExposeConfiguration(cfg => cfg
                            .SetProperty("connection_timeout", "100")
                         .Mappings(m =>
                         {
                             var cfg = CreateAutomappings();
                             m.AutoMappings.Add(cfg);
                         });

Row

There is a difference between a command timeout and a connection timeout. Please refer here. The code you've provided, sets the command timeout, but I need a way to set the connection timeout – Tother

Connection Timeout != Command Timeout i.e. connection timeout is the time of waiting connection available but command timeout is the max command execution time – Functionary

as others have stated, we are looking for connection timeout, not command timeout. your answer is misleading and can cause someone to change the wrong setting, that's why i down-voted. – Overwinter

Yes, in answering I originally typed command not connection - an easily made mistake I guess. Didn't bother editing as I felt somebody experienced enough to be using NHibernate would figure out the connection_timeout setting lives alongside its command equivalent. However, some people seem disproportionately vexed - even 5 years later - so, for their benefit, I've finally updated it. – Row

There is no such setting as connection_timeout. – Terpsichore

Answer 3

With NHibernate you can provide the connection yourself:

sessionFactory.openSession(myConnection);

I wouldn't recommend it, because it's easier when sessions are managed by NHibernate.

You can still write your own connection provider, which sets whatever you want on the created connections.

Feinstein