MySql.Data.MySqlClient.MySqlException: Timeout expired

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In recent times, a particular page in my web app throws the

Exception Details: MySql.Data.MySqlClient.MySqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

Though I use Ibtais as persistence layer, this error occurs. I have restarted the MySql service instance but stil i get the same error. It didn't happen earlier but happens frequently in recent times.

All the web applications deployed on the server uses Ibatis and the DB server remains on the same machine where IIS is installed. There are about 8000 records in which around 300 to 500 would be filtered on page load

Any insights for the cause of the problem?

ibatis timeoutexception query-optimization mysql c#
3 Answers

Make your connection string look like this:

DotNet Framework:

<add key="MYSQL_CONNECTION_STRING_RDS" value="Uid=userid;Password=pass;
     Server=localhost;Port=3306;
     Database=dbname;default command timeout=0;SslMode=none" 
/>

DotNet Core

"MYSQL_CONNECTION_STRING_RDS": {
    "ConnectionString": "Server=localhost;Database=dbname;user=userid;password=pass;default command timeout=0;",
    "ServerVersion": "8.0.22"
  }
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