pool will not disappear until I reboot the system.
The sample application I used for this test includes routines that use DataAdapter to return rows. Unless you manage the connection manually, DataAdapter will open and close the SqlConnection object correctly, so you are unlikely to experience an orphaned pool connection
It usually takes some time to connect to the database server, and the server also needs some resources to process the connection. Web applications sometimes process thousands of connections and require a considerable amount of resources to process connections. ADO. NET has the connection pool feature. The function of t
Ado.net has the connection function, all. NET open method basically does not have to consider the connection problem, no wonder. NET connection pool data can not be found on the network.. NET
Connecting to a database server usually takes a certain amount of time, and the server also needs a certain amount of resources to handle the connection. Web applications sometimes handle thousands of connections and require a considerable amount of resources to handle connections. Ado. NET has the characteristics of a connection
Transferred from: http://www.cnblogs.com/virusswb/archive/2010/01/08/1642055.htmlI used to. NET connection pool is wrong, originally thought that the connection pool is set up in Web. config, each database connection initiated wil
When I had nothing to do at night, I suddenly wanted to test the connection speed improvement caused by the ADO. net connection pool. I wrote the following:Code:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
1
Using
System;
2
Using
System. configura
Because the test uses small data volumes,
Program It runs normally, but when I got to the client and met more than 100 pieces of data, I was prompted that the connection had timed out, which left me puzzled. I don't know how to track it for a while.
Finally, I found a method to track the status of the data connection pool:
Http://www.yesky.com/SoftChannel/723423
; Pooling=false"); Conn. Open (); Conn. Close (); Conn. Dispose (); } watch. Stop (); Label2. Text=Watch. Elapsedmilliseconds.tostring (); } }}View CodeConclusion:1. Each application in ADO maintains a pool of connection objects, which is not created each time it is used, but is first fetched from the pool
Used to the way to access the database ADO, although the code is not written by the EF simple, but it is not troublesome. And the way EF does a multi-table query is that EF needs to go through the database to define the foreign key, then go through the code generation, and then use the Include method to make multiple table association queries. I don't really like that, but I'd rather write a SQL statement.So the ADO can not be finished without losing. So how to combine EF and ADO.It's very simpl
Original title: Some personal insights on the ado.net connection pool (Connection pool)Here is the original:Establishing a pool connection can significantly improve the performance and scalability of your application. The SQL Serv
. When the number of concurrent database connections is 513, the user waits for sqlconnection. after the connectiontimeout time is set (the default value is 15 seconds), the above error occurs if there is no available connection.
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What is the connection pool?Every time the program needs to read and write the database. Conne
I encountered this problem when I was playing WebService. The problem is: (. net4.0) I used it before, but an error occurred after updating the system. VS is running properly. An error occurred while running IIS .. Net bottom layer error. Switch to. net2.0 to run perfectly. So there is a problem with. net4.0.
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the number of concurrent database connections is 513, the user waits for sqlconnection. after the connectiontimeout time is set (the default value is 15 seconds), the above error occurs if there is no available connection.
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What is the connection pool?Every time the program needs to read and write the database. Connection
request some static page content, we can set the Web server queue value Larger, we will be the Web The server is set to 75 that's the case, and for example, if most of the requests in an application require complex and time-consuming database operations, then we should consider increasing the queue value size of both the database connection pool and the Web container. Therefore, in our actual tuning, we mu
application run effectively, you must keep connected resources under your control and monitor the status of the pool, you will receive a warning before the monitoring pool overflows and your customers start to complain (or leave your website.
Why is connection pool overflow
configuration file is bad behavior and can lead to security problems. Druiddruiver and Druiddatasource both support PasswordCallback.
4, SQL execution log, Druid provides a variety of logfilter, to support common-logging, log4j and Jdklog, you can choose the appropriate logfilter to monitor the database access you have applied.
5, extended JDBC, if you want to have the JDBC layer programming requirements, you can provide through the Druid filter mechanism, it is easy to write the JDBC layer ext
data providers, it uses the pool mechanism internally, so you no longer need to develop your own object pool mechanism (when using the provider ). Therefore, you can avoid complex tasks associated with manual transaction registration.
Monitoring connection pool
1) SQL Serv
Description: We get a connection that exceeds the maximum connection pool value when the top exception is generated. The maximum connection pool value is typically 100. When we get a connection that exceeds the maximum value, ADO
Use connection pool
Wang ranMicrosoft Certified lecturerWangran@itgoldenbridge.com
Click "add MSN robot"Download the msdn Chinese network broadcast course for you!
This course includes? Connection Pool? Use a connection pool? Ma
Net website error information: Note:An error occurred while executing the current Web request. Check the stack trace information for details about the error and the source of the error in the code.Exception details:System. invalidoperationexception: the timeout has reached. The timeout time has reached, but the connection has not been obtained from the pool. This
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