DriverManager « JDBC « Java Database Q&A





1. How to force timeout for DriverManager.getConnection() method call?    stackoverflow.com

I have an application which will establish DB connection with MySQL and execute queries. Sometimes the DriverManager.getConnection() method call takes 2 seconds and sometimes it takes 30 seconds. Is there any ...

2. Is the DriverManager concept in JDBC based on the provider design pattern    stackoverflow.com

In JDBC we use the

Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();
method to load the object in memory. Then when we use the DriverManager class to get a connection to the Sql Server, the DriverManager ...

3. JDBC with OUT DriverManager    bytes.com

I appreciate the bump of the thread, but honestly did you read my post? I know how to use MySQL or I would be posting in those forums. This is a ...

4. Java Database Connectivity (JDBC) - DriverManager.getConnection(): very strange behavior    forums.netbeans.org

Hi to everyone, I'm developing with Netbeans 6.8 a Java Swing Application that access a remote database via JDBC. When i run the same program without starting the gui the bug ...

5. Java Database Connectivity (JDBC) - DriverManager.getConnection(): very strange behavior    forums.netbeans.org

Hi to everyone, I'm developing with Netbeans 6.8 a Java Swing Application that access a remote database via JDBC. When i run the same program without starting the gui the bug ...

6. DriverManager.getConnection    coderanch.com

Hi all, I am facing a strange problem with drivermanager.getconnection. I am trying to connect to the Oracle in my machine and it is not happening. Previously, say in the last week I was getting the connection and I was working also. But today no connection is coimg. Moreover the error is Network Adapter couldn't establish the connection. Any idea... Thanks, ...

7. DriverManager.getConnection    coderanch.com

Hi, Could anybody help me out with this con = DriverManager.getConnection(url,User,Pass); ie.. instead of giving username and Password i wish to globalise the variables so that i can connect to various databases just by changing a single variable but its not working. I wud b thankful if anybody cud help me with this . regards Vidya

8. DriverManager.getConnection("...","user","password");    coderanch.com

Connection con = DriverManager.getConnection(url,"user","password"); My computer name is laptop running the Oracle 8i Database on Port 1521. My Database name is "POS". For url, I tried... url = "jdbc racle:@POS:1521:POS"; url = "jdbc racle:@POS.domain:1521:POS"; url = "jdbc racle:@POS.domain:1521:POS.domain"; url = "jdbc racle:@POS:1521:POS.domain"; I do have the Listener running. My SID is set to POS and my global db name is POS.domain. ...

9. jdbc and Driver Manager    coderanch.com





10. Driver manager and loading driver    coderanch.com

11. Help! DriverManager.getConnection problem    coderanch.com

Copied from the duplicate thread Originally posted by raj guntupalli : import java.io.*; import java.util.*; import java.sql.*; import javax.servlet.*; import javax.servlet.http.*; public class TestServlet extends HttpServlet { Connection dbConnection; /* public void init() { // ServletConfig config=getServletConfig(); // System.out.println(getServletName()+":Initializing..."); // String driverClassName=config.getInitParameter("driverclassname"); // String dbURL=config.getInitParameter("dburl"); // String username=config.getInitParameter("username"); // String password=config.getInitParameter("password"); /* try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); }catch(ClassNotFoundException e){System.out.print("beep");} /* try { dbConnection=DriverManager.getConnection("jdbc ...

12. DriverManager.getDrivers() Basic question    coderanch.com

Hi, What exactly happens when i say Class.forName("MyDriverClass") ? I have two sample programs in one I load the driver and in other I try to get the drivers loded using DriverManager.getDrivers(). But In the second program it doesn't return the driver. But I I retrieve the driver in first progrma then it lists the driver which is loaded using Class.forName. ...

13. Stopped threads waiting on DriverManager.getConnection()    coderanch.com

RMI based application with the server piece running as a Java app on Solaris. After a few hours of use, with 100-150 users, the server app appears to hang from the client. If I do a kill -3 on the server process, I see a whole buttload of threads (over 100) stuck on DriverManager.getConnection() method (see below). The trace doesn't show ...

14. DriverManager.getConnection()    coderanch.com

15. DriverManager native method    coderanch.com





18. DriverManager iterating through driver lists, will it create an overhead ?    coderanch.com

Folks, i read this on a website: "You need a database connection to manipulate the database. In order to create the connection to the database, the DriverManager class has to know which database driver you want to use. It does that by iterating over the array (internally a Vector) of drivers that have registered with it and calls the acceptsURL(url) method ...

19. driver manager    coderanch.com

Jaikiran: Just want to mention that I am female. Ravindra: if you really know the answer then give it otherwise don't Sometimes people (especially the moderators here) ask questions to help you elaborate your question. The alternative is everyone remaining silent because they don't understand the question and then you don't get any help. Note that the rolleyes icon is often ...

20. DriverManager registerDriver not working    coderanch.com

In the following code: Class dbDriverClass = loader.loadClass(jDataSourceClassTextField.getText()); Driver driver = (Driver) dbDriverClass.newInstance(); DriverManager.registerDriver(driver); String url = "\"" + jURLTextField.getText() + "\""; Enumeration e = DriverManager.getDrivers(); while (e.hasMoreElements()) { Driver d = e.nextElement(); System.out.println(d.toString()); } Driver d = DriverManager.getDriver(url); String user = "\"" + jUserNameTextField.getText() + "\""; String password = "\"" + jPasswordTextField.getText() + "\""; Connection connection = DriverManager.getConnection(url, user, password); ...

21. Driver and DriverManager    coderanch.com

24. DriverManager class    coderanch.com

No, there's no contradiction. If your app wants to use JDBC, then the driver for your particular DB needs to be loaded; that's what #1 is saying. #2 is saying that there's a default way to load drivers without the app having to do anything about it. But that doesn't change the fact that the right driver needs to be loaded ...

25. DriverManager class    coderanch.com

26. Registering driver with DriverManager    coderanch.com

27. DriverManager class and JNDI    coderanch.com

28. DriverManager lookup    coderanch.com

To be clear: you don't load the DriverManager (a class in the JDBC package), but rather, you load the JDBC driver for a given database. The reason you do this is that the java.sql package is a set of interfaces, and you write all your code to those interfaces. A driver is a set of classes that implement those interfaces and ...

29. DriverManager.getConnection() not working in runtime but working fine in debug mode of Eclipse    coderanch.com

Hi all, I'm facing a very strange problem. Dunno doing some silly mistake or what. I have a Java application which connects to the database. The code snippet is as follows: "String theConnectionString = theDataSource.getConnectionString(); String theDriverName = theDataSource.getDriverName(); String theUserID = theDataSource.getUserID(); String thePassword = theDataSource.getPassword(); // Load the driver Class.forName(theDriverName); // Get the connection m_Connection = DriverManager.getConnection(theConnectionString, theUserID, thePassword); ...

30. driver manager    coderanch.com

Hi Jasvir, DataSource is now the preferred way to obtain a database connection, but I don't think that this difference will be a big problem. There are a lot more other issues which can reduce or increase the performance of a database-driven application. Anyway, 20k visits is a bad measure for performance issues related to the database. What exactly is a ...

31. Problem with DriverManager    java-forums.org

Hi, i've a problem with calling to DriverManager.getConnection(...) method. In my class i've a Logger valid istance that work fine until i call getConnection(...) from DriverManager. After i call this method the Logger istance don't work properly, the logger level is set to null and the logger handlers are changed! Why this happen? I don't know how to resolve this problem! ...

32. JDBC (Driver manager initialisation)    forums.oracle.com