"Time Out expired.The time out elapsed prior to obtaining a connection from the pool .This have occurred because all pooled connections were in use and max pool size was reached"
View 4 RepliesI created a VB.NET web application project. Recently I got the dreaded above error message when a certain amount of web pages have loaded. On a form1_Load event, I do this:
vb Protected Sub form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles form1.Load
MyConnection = New SqlConnection
MyConnection.ConnectionString = CONN_STRING
MyConnection.Open()
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We have a VB.net application using both ADO.net and ADODB connections(both connecting to MS SQl server) Whenever an ADO.net connection throws an expection, we cleared the pools Now if any ADO.connection reopened and everything works fine Is there any way to clear pools for ADODB connection?
View 1 Replies"Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool.his may have occured because all pooled connections were in use and max pool size was reached."I am googling and find out the answer to it is increase my connection pool size from to 100 or so.
View 4 RepliesFrom my understanding, .Net will pool SqlConnection objects where the Connection String is the same by default. Will the connection still be pooled if I call the Dispose method? This question is asked under the context of an ASP .Net application that at times makes many hits to the database in a single PageLoad event. I want the connections to be pooled, but would like confirmation that Closing and Disposing of the connection once the data operation is complete does not interfere with .Net's handling of the connection pool.
View 3 RepliesI have written some code (VB.net) which simply runs a backup on all required servers and databases in a loop. The code works perfectly, except for the first backup which Timeout's after 30 seconds (even with my Connect Timeout=0).
Everything is written manually for the dataconnection, the connection opens and timeouts on SQLComm.ExecuteNonQuery()
dbConnStr= Data Source='Server';Initial Catalog='Database';Integrated Security=False;User ID=sa;Connect Timeout=0;User Instance=False
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In this situation, my application can connect to the MSSQL server in one of two ways; via a direct TCP/IP connection (WAN) (IP's filtered using RRAS in 2003 Server) or via a VPN connection. The application will first try to open the connection using the WAN connection string and if it can't, then it tries using the VPN connection string. My issue is, I set the connection timeout to 5 seconds for the first attempt but it's taking way longer than that to return an exception. The order in which I attempt to open the connection doesn't really matter. I have looked at the ConnectionTimeout property after changing the connection string and it does indeed show 5 seconds. It appears that the connection timeout value is being ignored.
View 6 Repliesam using vb.net 2008 and sql server 2008. I have a search form and when i search at times, I have "Connection Timeout Expired" error.I dispose and close the connection after establishment, but i still get it. tried setting MyConObj.ConnectionTimeout = 0 and it also gives me "Property ConnectionTimeout is ReadOnly.
View 1 RepliesI have this simple code to test that a DB is ready:
Function testlocalcon() As Boolean
Dim constr As String = _clconstr
Try
Using t As New SqlConnection()
constr = constr & " ; Connect Timeout=1"
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I do not want to execute a query, just to check the connection, but no matter what the time out parameter is ignored.
The following is my connectionstring: server=(local);database=JnJ3;uid=sa;pwd=sa May I know how can I avoid timeout expired because I keep on receiving error message when deal with huge amount of data.The timeout period elapsed prior to completion of the operation or the server is not responding.
View 2 RepliesSometimes when my server is down or busy, I get an error saying "connection timeout" while connecting to MySQL. But with the error the program also crashes. My question is how can I prevent crashing, it would be better to show a msgbox when this happens. (visual basic 2010)here is a screenshot of the error
I use this,
Dim connStr As String = "Database=mydatabase;" & _
"Data Source=datasrc;" & _
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How do you actually handle connection Timeout to the database.Given a scenario where you are processing data half way through and the database crashed . So your connection between the database and your application would be broken. Most likely throw an exception error if u handle exceptions.What are your suggestions or your preferred way of handling such scenarios.
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connectionString="Data Source=########;Initial Catalog=DowntimeD51;Persist Security Info=True;User ID=#######;Password=########;Connection Timeout=120;Encrypt=False;TrustServerCertificate=False;Network Library=dbmssocn" I have the above connection string in a vb windows application , This is part of my app config file.
I then have a number of table adapters for connecting my business logic to the database , One of the queries inparticular is a pretty large one and requires extra time to complete however the connection is getting a timeout error. When I checked the adapter connection with Dim connection2 As Int32 = Adapter1.Connection.ConnectionTimeout This shows the connection time out to be 120 seconds but the timeout is still occuring after 30 seconds.
My program needs to connect to a mysql db, but if the users has no internet or fails to connect i don't want my app to crash
View 4 RepliesMy application requires a user to log in and allows them to edit a list of things. However, it seems that if the same user always logs in and out and edits the list, this user will run into a "System.Data.SqlClient.SqlException: Timeout expired." error. I've read a comment about it possibly caused by uncommitted transactions. And I do have one going in the application.
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I'm not sure if this is a VB.NET error or SQL Server. But I get the above error with following stack trace:
[SqlException (0x80131904): Timeout
expired. The timeout period elapsed
prior to completion of the operation
or the server is not responding.]
System.Data.SqlClient.SqlConnection.OnError(SqlException
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The following is my connectionstring: server=(local);database=JnJ3;uid=sa;pwd=sa May I know how can I avoid timeout expired because I keep on receiving error message when deal with huge amount of data. The timeout period elapsed prior to completion of the operation or the server is not responding.
View 1 RepliesI have a code that basically grab data from a file, split into array and use a FOR loop to input data into a different file. I want to use thread pool to create multiple threads to do a specific task. For example for the array() I want a thread to read the first item in a array and perform the task, a second thread reads the second item and perform the task, a third thread reads the third item and perform the task, etc. How would I add thread pool to something like:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim data As String
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I have about 1000 webrequest created. Each link will navigate to a website and download a picture to place into a picturebox.
The person will then type in what animal is in the picture into a textbox. Then the user will then hit the submit button to send the name of the animal back to the site.
I am going to implement the use of a thread pool to handle the threading portion of those requests.
What is the best method to get my webrequest into the thread pool (listbox, txt file,etc?) and then how can I setup my button to coordniate with the site that is coming out of the pool to the picture box?
My first thought is to create everything on the fly. The picturebox, the textbox, and the submit button, the webrequest to the site for the picture and back again for the result. Something tells me that I will be taking the long way around to get same result.
My second thought is to have a slew of pictureboxes, textboxes, and buttons already on my screen and then when they come out of the pool and into a thread they would assigned a picturebox, textbox, and button if the others are not busy.
How can I set an application pool to 32bit in IIS7 when creating it?I'm creating the app pool with the below function
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I am going to implements a thread pool to run my application. All of my content is saved under a folder on my desktop.
Each of the files are in .txt format. How can I read each .txt from a given folder and then put the .txt file into the thread pool / thread queue?
My code read a thousand files, and for each file a connection is made and open to check against a recordset in SQL. After 143 files, the application will stopped and thrown this exception regarding maximum pool size reached. What I don't understand is I'm closing the connection after every file is processed, could it be I'm doing it incorrectly?
Please see my code below. I was only able to make this work by setting max pool size = 3000 in the connection string, since closing the connection does not seem to work.[code...]
I've made a tool that update our server by remote and the user that run the program doesn't have the right to stop and start the app Pool, how can I do an impersonate with an admin account and remotely stop/start of the app pool ?
View 1 RepliesI have about 1000 webrequest created. Each link will navigate to a website and download a picture to place into a picturebox.The person will then type in what animal is in the picture into a textbox. Then the user will then hit the submit button to send the name of the animal back to the site.I am going to implement the use of a thread pool to handle the threading portion of those requests.My question is this:What is the best method to get my webrequest into the thread pool (listbox, txt file,etc?) and then how can I setup my button to coordniate with the site that is coming out of the pool to the picture box?My first thought is to create everything on the fly. The picturebox, the textbox, and the submit button, the webrequest to the site for the picture and back again for the result. Something tells me that I will be taking the long way around to get same result.
View 2 RepliesI've been reading up on multi-threading and just have a couple trivia questions that are ambiguous given my sources:
1) What is the max number of threads in the thread pool? The number 25 is used but I have on reference that says 25 per CPU and another that says 25 per core. I realize that both can be right but before I start making flagrant design decisions I'd like some validation.
2) Let's say I'm in the body of a delegate and I call a function or sub. Does that function/sub remain in the thread or does it revert to the parent thread? I'm guessing the former would be much easier to implement so that's probably what MS did but you just can never tell.
i want to assign a virtual directory to application pool using vb.net.how to do this programatically in vs 2008.
View 11 RepliesI am going to implements a thread pool to run my application. All of my content is saved under a folder on my desktop.Each of the files are in .txt format. How can I read each .txt from a given folder and then put the .txt file into the thread pool / thread queue?
View 2 RepliesI have several threads in my WinForm and I am running them via Thread.Pool, what I need to know is that how can I run them sequentially.
example:
Thread1 => me.label1.text = "Thread1"
Thread2 => me.label2.text = "Thread2"
Thread3 => me.label3.text = "Thread3"
In my Form_Load event, I have a line as follows:
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Im creating a service for a mobile platform and I need to process user messages on a different thread than they were created on to leave the threadpool open.Anyway my App will be using a MySQL database and when it gets a message it will add the message to Another thread pool. But in the sub that procceses the messages I will need to perform query's on the database. So i know i can use a global variable and it will be visible to all threads but is making database operations safe while using a thread pool with a global mysqlconnection?
View 2 RepliesI'm trying to use the thread pool to download more than one string at a time. But most of the tutorial on threading is in C# or C++ so my knowledge on thread pool is limited.
Here's what I got so far.
Imports System.Threading
Imports System.Net
Imports System.Text.RegularExpressions
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I keep getting an error "Cross-thread operation not valid: Control 'Listbox1' accessed from a thread other than the thread it was created on." And it still seems to be downloading it one by one to me.