Sharepoint 2010 Error 500 internal

Hello,

 I encountered a strange error on the server farm. rummaging through Sharepoint log, it shows me this error: 

“System.InvalidOperationException: Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.     at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)     at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)     at System.Data.SqlClient.SqlConnection.Open()     at Microsoft.SharePoint.Utilities.SqlSession.OpenConnection() 0afdd946-e4e8-484e-b3e4-a58859594bf1…”

Do you have an idea please !!!!!

Thanks 🙂