C# - Connection Time Out After Being Idle For A While?
Apr 23, 2010
My ASP.NET website while trying to connect to the database for first time after a period of inactivity throws an time out exception.
I understand the connections in the connection pool get terminated after some idle time for some reason (Firewall or Oracle settings) and the pool or app doesn't have a clue about it.
Is there any way to validate the connection beforehand so that the first try doesn't throw an exception?
I don't have much control over the DB or Firewall settings. So I have to deal with this is my application.(would prefer if there is any web.config settings)
I am using: ASP.NET 2.0. Oracle server 11g, Microsoft Enterprise Library DAAB to do all my DB operations.
I have a requirement to calculate the Web application idle time. Say the user doesnt use the web application for 15 minutes, then a message needs to be displayed to the user.
I have an IIS 6.0-based C#/ASP.NET web site with a SQL server backend.I want to generate some computationally expensive reports (summaries, search engine indexes, etc...) in idle CPU time. I need the reports to be generated from WITHIN the IIS App Pool so it knows the proper configuration settings and (harder to fix) avoids the nightmarish security restrictions I've been placed under.
Can I start threads inside the AppPool's process that won't tie up the CPU, so it can continue serving requests unfettered? If so, how? What code and libraries?
I imagine it involves ThreadPool and thread priorities, but I couldn't find good coverage of low-pri threads and their interaction with the IIS web server and App pool.
[EDIT] [URL] discusses using a Timer for this but doesn't directly state that the .NET framework will insure that the Timer thread is low-priority. This might be a solution, but is that assured?
[URL]
[EDIT] Interestingly, Stack Overflow itself seems to use IIS background threads for my purpose:
[URL] in the comments, everyone says their (no longer used) technique sucks, but this one in the comments makes sense to me...
Got really strange Firefox issue. Using the Microsoft __doPostBack javascript function in web forms page. Used for tab control, we have got each tab click calling the __doPostBack function. Works ok on my dev machine with all browsers but got a colleague who has an issue if he leaves the page idle for circa 3 -4 minutes. After this delay if he selects a new tab which calls the __doPostBack function the call to theForm.submit(); just hangs and get requested timeout. No .net calls are seen in Firebug. The __doPostBack event is called just theForm.submit() function just doesn't execute. If he does not have this idle time works ok. It is also ok for him on all other browsers.
i made an web application for my client, he is from usa, I deployed application to [URL], at my local system, the project function proper. But what is happening that at main server the session is destroying automatically, before the idle time. I have been figuring out this problem for long but could not solved it. what may be the reason behind this session out. I am using in process session.
How to find the client idle time .i deployed the application in the server .whenever the client access the site then i need to find that client system idle time in asp.net .
I have IIS 7.5 running on windows 7 64 bit machine.
My problem is that in my web application after any page request if the page remains idle for more than 2 mins, it stops responding. For e.g. lets take the following scenario:
1. Initial page request
2. the page stays idle for 2 mins
3. Click a button to save data
4. It takes very long for the aspnet worker process to reach page_load, and firefox shows "connection was reset" message.
I put breakpoint on page_load. It strikes the breakpoint after a long time and also it does not go to the event handler of the button that was clicked.
The web application works perfectly if the page is not kept idle.
in my page i dessigned Updatepanel within that i placed some input controls(textbox, dropdownlist etc) within that updatepanel i placed one button. now the problem is on production if i idle some time after enter some data and press the button then the button click event not fired, then i refresh the page enter the input then press button then its fired, what is the problem? and how to resolve it? (i didnt included any triggers)
I have developed a web application in .net & if the web application is idle for some time & after that if we perform some action on that web page then it doesn't respond.
For some reason it takes 7 seconds to open a connection to a sql server database for the firt time, subsequent connections takes a second.
I'm using C# and asp.net
Its after compilation, i essence every time i restart the site, which means every time it needs to actualy create the "first" connection. i understand that setting up connection pooling has overhead, but i have never seen that i should take 7 second to set it up.
i have ASP.NET application,when user log-off, and immediately trying to log-in again,it fails and page is waiting, after 20 seconds the page logins, i think the connection with database, e.g Access, inst closed.what i need to do when user log-off to close all the database conenction instances. i am using this code when the user click log-off button:
protected void closeCon() { //to close access [code]......
What is the difference between connection timeout and command timeout?
In our application sometimes it is showing a timeout error. When we increased the command timeout value to 100(from default 30), its working. Is there any issue in increasing the command timeout value.
This may be more of a general ASP.NET question although I'm not sure. My project is MVC 1.0 so I thought I'd post here. I've searched but found nothing specifically applicable.
I'm using the default membership/authentication functionality as provided by the MVC template. The requirement is that I allow the user to set the connection properties individually in the <appSettings> section of Web.config rather than as a single value in the <connectionStrings> section. I can easily enough retrieve the data and turn it into a connection string, but I can see no way to make use of it in code.
I have a WCF service that processes some input arguments and retuns result in approximately 4 minutes. Sometimes the calling client may get request time out before the WCF service answers.
Now, my customer is asking me to stop processing on the service side when the client got timed out. Since, I could not know the status of cleint on the service, I could not stop the process.
I'm using Visual Studio 2008, and my database is SQL Server 2000.
I want to add a connection to the Server Explorer in VS. The Data source is Microsoft SQL Server (SqlClient). After entering in all my information and I click Test Connection, it is successful.
But when I click OK, I get the error:
Unable to add data connection. ExecuteScalar requires an open and available connection. The connection's current state is closed.
using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq;
[code]...
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 74.125.155.109:465Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details: System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 74.125.155.109:465Source Error:
I got server error when downloading pdf file from my webpage in asp.net."A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond in asp.net."
