connection-pooling

I'm investigating moving away from an Oracle connection pool and using the Tomcat connection pool. I followed the myriad of example for configuring the <Resource> in Tomcat's /conf/server.xml . I found great info here . However, when I start Tomcat, I get the following error: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.tomcat.jdbc.pool DataSourceFactory] I'm using Tomcat 6.0. My <Resource> config in /conf/server.xml is: <Resource name="jdbc/myds" type="javax.sql.DataSource" auth="Container" factory="org

I am using Tomcat JDBC connection pool along with Spring boot, JDBC template and SQL Server. I need to know what is going inside connection pool while application is waiting for database connection. Such as.... No of active connections No of idle connections No of blocked connections, additional info why this connection is blocked No of available connections and ... Is there any way to get these info by debugging or using logging frameworks like log4j? Any idea will be appreciated. Sundararaj Govindasamy After a lot of research, I am able to find 3 ways to log & monitor database connection

I'm currently doing some GUI testing on a ASP.net 2.0 application. The RDBMS is SQL Server 2005. The host is Win Server 2003 / IIS 6.0. I do not have the source code of the application because it was programmed by an external company who's not releasing the code. I've noticed that the application performs well when I restart IIS but after some testing, after I have opened and closed my browser for a couple of hours, the application starts to get slower and slower. I was wondering if this behaviour was due to a bad closing connection practice from the programmers : I'm suspecting an open

I'm very unfamiliar with Hibernate and have just started working on a web app that uses it with a MySQL database. I notice that the community documentation tutorial states: The built-in Hibernate connection pool is in no way intended for production use. It lacks several features found on any decent connection pool. Can someone elaborate on this? What exactly is it missing and what are problems people have with the 'default' one? On googling I found a website here but it doesn't really explain the problems, just what you should be using instead. jpkrohling What is the connection pool and why is

I've been playing with MongoDB recently (It's AMAZINGLY FAST) using the C# driver on GitHub. Everything is working just fine in my little single threaded console app that I'm testing with. I'm able to add 1,000,000 documents (yes, million) in under 8 seconds running single threaded. I only get this performance if I use the connection outside the scope of a for loop. In other words, I'm keeping the connection open for each insert rather than connecting for each insert. Obviously that's contrived. I thought I'd crank it up a notch to see how it works with multiple threads. I'm doing this because

I am trying to understand connection pooling in java , i am using jsp, servlet and tomcat 6 server in my application. I have written the following code in a java class dbconnection.java : I am using type 4 jdbc connection with oracle 10g EE in windows Xp OS import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; public class dbconnection { public Connection con = null; public Connection getConnection() throws Exception, SQLException { try { Class.forName("oracle.jdbc.driver.OracleDriver"); con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:abc",

Consider the following simple Node.js application: var http = require('http'); http.createServer(function() { }).listen(8124); // Prevent process shutting down var requestNo = 1; var maxRequests = 2000; function requestTest() { http.request({ host: 'www.google.com', method: 'GET' }, function(res) { console.log('Completed ' + (requestNo++)); if (requestNo <= maxRequests) { requestTest(); } }).end(); } requestTest(); It makes 2000 HTTP requests to google.com, one after the other. The problem is it gets to request No. 5 and pauses for about 3 mins, then continues processing requests 6 - 10, then