---
title: "How to handle database connection failures and exceptions in ASP.NET MVC?"  
description: "How to handle database connection failures and exceptions in ASP.NET MVC?"  
author: "Revati S Misra"  
published: 2023-06-11  
updated: 2023-07-12  
canonical: https://www.mindstick.com/forum/158719/how-to-handle-database-connection-failures-and-exceptions-in-asp-dot-net-mvc  
category: "asp.net mvc"  
tags: ["asp.net mvc", "database connection"]  
reading_time: 3 minutes  

---

# How to handle database connection failures and exceptions in ASP.NET MVC?

How to [handle](https://www.mindstick.com/articles/311004/suede-skillet-handle-cover) [database connection](https://www.mindstick.com/forum/159617/how-to-connect-to-a-database-connection-in-java) failures and [exceptions](https://www.mindstick.com/interview/22871/define-predifined-generic-exceptions) in [ASP.NET MVC](https://www.mindstick.com/forum/155798/what-is-caching-in-asp-dot-net-mvc)?

## Replies

### Reply by Tehran Noorani

Do the initialisation in the function

```plaintext
private DBEntities db;
// then in your function attempt to initialise
	try
	{
		db = new DBEntities("database");
		db.Connection.Open();
	}
	catch(Exception ex){
		if(db.Connection != ConnectionState.Closed){
		db.Connection.Close();
		db.Dispose();
	}
```

### Reply by Aryan Kumar

Here are some ways to [handle database](https://www.mindstick.com/forum/158711/how-can-handle-database-transactions-in-asp-dot-net-mvc) [connection](https://www.mindstick.com/articles/13012/what-makes-ethernet-connection-better-than-wifi) failures and exceptions in [ASP.NET](https://www.mindstick.com/articles/934/default-folders-available-inside-the-asp-dot-net-application-folder) [MVC](https://www.mindstick.com/forum/155803/define-cache-profile-in-mvc):

- **Use a try/catch block to catch and handle database connection errors.** This is the most basic way to handle database connection errors. In the try block, you would try to open a connection to the database. If the connection fails, the catch block would be executed. In the catch block, you would log the error and then display a friendly error message to the user.
- **Use a custom exception filter to handle database connection errors.** An exception filter is a class that can be used to handle exceptions that are thrown in an ASP.NET MVC application. To create a custom exception filter, you would need to create a class that inherits from the `ExceptionFilterAttribute` class. In the `OnException` method of the exception filter, you would handle the database connection error.
- **Use a database connection pooling library.** A database connection pooling library can help to reduce the number of database connection errors that occur in an ASP.NET MVC application. A database connection pooling library keeps a pool of open database connections. When an ASP.NET MVC application needs to open a database connection, it will first check the pool to see if there is an open connection that can be reused. If there is an open connection in the pool, the ASP.NET MVC application will use that connection. If there is no open connection in the pool, the ASP.NET MVC application will create a new connection.

Here are some additional tips for handling database connection failures and exceptions in ASP.NET MVC:

- **Log all database connection errors.** This will help you to track down the cause of the errors and to prevent them from happening again.
- **Display friendly error messages to users.** When a database connection error occurs, you should display a friendly error message to the user. This will help to prevent users from becoming frustrated with your application.
- **Use a database connection timeout.** A database connection timeout is the amount of time that an ASP.NET MVC application will wait for a database connection to open. If the database connection does not open within the timeout period, the ASP.NET MVC application will throw an exception.

By following these tips, you can help to ensure that your ASP.NET MVC application is able to handle database connection failures and exceptions gracefully.


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Original Source: https://www.mindstick.com/forum/158719/how-to-handle-database-connection-failures-and-exceptions-in-asp-dot-net-mvc

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