1. Mysql server connection error coderanch.comHi, all I try to connect Mysql server with localhost, It gives me following error: C:\mysql\bin>mysql ERROR 2003: Can't connect to MySQL server on 'localhost' (10061) I install Shareware Mysql on Nt server, and start it as followings: 1:mysqlshareware (no problem) 2: net start mysql(casue below error) The service name is invalid. More help is available by typing NET HELPMSG 2185. ... |
2. JDBC mysql connection error coderanch.comHey all, I am having terrible errors. I have the mm.blah.blah driver installed/configured correctly. My db seems to be working correctly. When i execute a testJdbcConnection, I receive the following error: java.sql.SQLException: General Error: 79 at org.gjt.mm.mysql.Connection. |
3. mysql connection on jserve coderanch.com |
4. Connection problem with MYSQL coderanch.comHi folks! I am trying to do what Terrance did, namely connect a Java program to MySQL. Reading this post, I realise I have not installed the Connector/J driver and it's not in my class path. How do you do this? I have downloaded the Connector/J zip file (I am using windows XP) from MySQL into a separte directory on my ... |
5. Persistant connection for MySql coderanch.comHi Tim This may not be a suitable soultion for what you are doing, but one way to ensure you always have an active connection is to write a class to encapsulate the java.sql.Connection object. So, instead of using the JDBC code directly to create an instance of connection and then hold a reference to it in your calling object, create ... |
6. Please help me with Java connection to MySql coderanch.comI try to connect to a Mysql database in java (on windows98) and I don't know what I am doing wrong (I am still more or less a agreenhorn to all this) - please help me! I downloaded mm.mysql-2.0.4-bin.jar and unpacked it into c:\mysql\ then I set the classpath in the autoexec.bat: SET CLASSPATH=c:\mysql;%CLASSPATH% My Java Code is compiling fine, but ... |
7. MYSQL Connection error Plz help coderanch.com |
8. MySQL JDBC Connection Pools coderanch.com |
9. Problem with JDBC connection with MySQL coderanch.comThe following code works with mySQL 1.3.? You'll obviously have to put your SQL in instead of mine. I don't know why you are getting CLOUDSCAPE errors??? You should have the mySQL connector in your classpath. Make sure you don't have any other jdbc stuff in your path as well. public class MySqlDbTest { public MySqlDbTest() { } public static void ... |
10. question on JDBC connection to MySQL coderanch.com |
11. MySql Lost connection exception under load coderanch.comHas anyone ever encountered a problem where JBoss begins to through exceptions under load. Basically, I have a MySql database. I can connect to it, query and update it just find. I have about 6,000 records in the database. Here is the basic loop. con = DBUtil.getConnection(); ps = con.prepareStatement(query); rs = ps.executeQuery(); boolean hasPatients = rs.next(); if (hasPatients) { do ... |
12. Connection to MySQL coderanch.com |
13. connection to MySQL coderanch.com |
14. mysql connection coderanch.comI tried the .isClosed() but got the same error. I think mysql has has been connected since I got it started on Saturday. Every day when I try it even before I start mysql I get the same error. I think if mysql was disconnected I would be getting the other error that I was getting before Saturday. I have closed ... |
15. MySql Connection coderanch.comhi, I would like to talk to my MySql server on the local machine (4.0.15-nt) by giving the userid and password from the java program. As of now I am able to connect to the Mysql server by using only the url in the code Connection conn = DriverManager.getConnection(url). I want to give the userid and password. Kindly let me know. ... |
16. Mysql and connection refused coderanch.com |
17. MySQL connection Problem coderanch.comYou will need to provide the actual error you are getting to help diagnose Things to look for 1) Be sure that the mysql driver is in your classpath. 2) Be sure that the URL you are using to connect is valid 3) Be sure that you can connect to the DB and run the SQL query without Java. Without seeing ... |
18. ODBC connection for MySQL coderanch.com |
19. mysql remote connection coderanch.com |
20. connection problem with mysql coderanch.comhi, i'm using j2sdk1.4.2 & mysql 3.x and i'm having a problem with connecting these two. i'm using the latest connector, which mysql-connector-java-3.0.14-production-bin.jar, and i followed all the steps for installing this driver. i've already set the classpath to where the connector is. but i'm still having some problems. this error occurs : unable to connect to any hosts due to ... |
21. Java MySQL connection coderanch.com |
22. JDBC Connection to MySQL in OOo coderanch.com |
23. MySQL 4.1 [java.net.ConnectException: Connection refused] coderanch.com |
24. Lose connection to MySQL Database overnight coderanch.comI have a Webapp that overnight loses its connection to the MySQL database. I realize there is a timeout and I have code, in the servlet's POST, that does something like this: if ( connection.isClosed()) { this.initializeConnection(); } The initializeConnection() method re-creates the connection from scratch. Yet, still, first thing in the morning, when I start up the Web app, I'll ... |
25. mysql connection coderanch.com |
26. connection reset on MySQL and Resin-3.0.13 coderanch.comHello friends, I resently reinstalled my OS... and the installed new instance of MySQL 5.0 and Resin.... Now Upto last time it was working perfectly... with my new installation, my jsp cann't connect with database and throws com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: Connection ... |
27. MySQL Connection Pooling coderanch.comI am using Tomcat and MySQL and connect to a MySQL database through the following code in my servlet (oversimplified for brevity's sake). Context ctx = new InitialContext(); _ds = (DataSource)ctx.lookup("java:comp/env/jdbc/ArgonautDB"); conn = ds.getConnection(); A few questions: Is the method ds.getConnection() getting a connection from a Connection Pool? If so, what connection pool? I didn't create any classes that pooled connections? ... |
28. mySql connection coderanch.comhi, if you use tomcate 5.5.x version ,u have to configure in context.xml otherwise in server.xml. download mysql driver from net. driver name like this "mysql-connector-java-3.0.16-ga-bin.jar" copy this file in %CATALINA_HOME%\common\lib folder. and following code in context.xml ----------------------------------------------------------- |
29. connection to Mysql with username and password coderanch.comi have installed MySql4.1.13-0 on pcq linux and it is working fine.i have created a newdatabase and new user using the following commands; i am logging into mysql using username root and passowrd also root mysql>create database inetdb; mysql>grant all privilges on inetdb.* to 'student'@'localhost' identified by 'student'; i have tried to connect to inetdb database using student user using the ... |
30. Connection to MySql Database coderanch.com |
31. Java and mysql connection from begin coderanch.comi want to use jsp and using mysql.... but why i can't connect database using mysql, but if i connect to access, it has been success... 1. is that because i must install mysql-connecting, driver to connect mysql with java?? i has been download it from dev.mysql.com/downloads/connector/j/3.1.html but i still don't know how to intall it!! 2. to access mysql directly, ... |
32. MYSQL Connection Error coderanch.comHai all.. I am Using Hibernate3.1 ,MySQL 4.1 and JBoss 4.1 in my Application.. Using mysql-connector-java-3.1.13-bin Connecter to Connect JDBC After deploying the Application It is runing fine.. If i open the same Application next day it is showing following stacktrace and after that it is working.. I tried to find the solution but i did't get yet.. Please help me.. ... |
33. MySQL connection problem coderanch.com |
34. Help setting DB connection using mysql from a server coderanch.com |
35. MySQL connection is dropped before wait_timout is elapsed coderanch.comOur web application uses mysql-connector-java-5.0.3-bin mysql driver and we have implemented a pooling mechanism to maintains certain number of connection in pool. Our application is running on a machine X and Mysql database is running on different machine Y. We have set mysql wait_timout variable for 24 hours. Ideally the connection would be dropped automatically after sitting idle for 24 hours. ... |
36. MySql connection issue coderanch.com |
37. jdbc connection with mysql on unix coderanch.com |
38. MySQL: Is database name must in connection URL? coderanch.com |
39. problem with mysql jdbc connection coderanch.comimport java.sql.*; class TestUsers { public static void main(String[] args) { try{ Statement stmt; ResultSet rs; Class.forName("com.mysql.jdbc.Driver").newInstance(); String url="jdbc:sql://localhost:3306/csehackers"; Connection con=DriverManager.getConnection(url,"root","krypton"); stmt=con.createStatement(); stmt.executeUpdate("insert into users values('indranil ghosh','85-10-03','hasta','motu','indranil.cse@gmail.com'"); con.close(); } catch(Exception e) { e.printStackTrace(); } System.out.println("Hello World!"); } } i am getting the following o/p :- java.lang.ClassNotFoundException: com.mysql.jdbc.Driver at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown ... |
40. MySQL Connection in Eclipse 3.2 coderanch.com |
41. Connections to mysql coderanch.comHello all, I have a application that has 3 streams, one handles a backend applications, one handle request from web sites that consume webservices and 3rd handles request from a java midlet. All three streams hit the same database in mysql. my mysql setting does not allow for process for more than 20 seconds (max timeout set to 20). this works ... |
42. connection to MySQL.... coderanch.com |
43. bean for mysql connection in servl;ets coderanch.com |
44. MySQL connection coderanch.comHi, i am trying to connect to a MYSQL database the database is local, and i have a driver ".jar" the connection is not working plus where should i place my .jar file " the driver " and what is the connection string. if someone now a working driver please tell me what is the site so i can download it ... |
45. JNDI connection to MySQL coderanch.com |
46. mysql connection problem coderanch.comhi all , i am trying to connect mysql Db by this code , import java.sql.*; //import com.mysql.jdbc.Driver; public class MysqlConnect{ public static void main(String[] args) { System.out.println("MySQL Connect Example."); Connection conn = null; String url = "jdbc:mysql://localhost:3306/"; String dbName = "test"; String driver = "com.mysql.jdbc.Driver"; String userName = "root"; String password = "root"; try { //Class.forName(driver).newInstance(); Class.forName("org.gjt.mm.mysql.Driver").newInstance(); conn = DriverManager.getConnection(url+dbName,userName,password); ... |
47. mysql connection using eclipse (ubuntu) coderanch.comimport java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; public class baran { public static void main(String args[]) { Connection con = null; try { Class.forName("com.mysql.jdbc.Driver").newInstance(); con = DriverManager.getConnection("jdbc:mysql://localhost:3306/baran", "root", "abcd"); // error is here ** error is here *** error is here if(!con.isClosed()) System.out.println("Successfully connected to " + "MySQL server using TCP/IP..."); } catch(SQLException e) { e.printStackTrace(); } catch(Exception e) { System.err.println("Exception: " ... |
49. Mysql jdbc connection takes lot of time coderanch.comThat's may be because of the MySQL Servers instance "connection_timeout"(I don't remember that attribute, it may be "timeout", Consult MySQL site) has set to some big value. But that's shouldn't be the issue, the point is why are you connecting to a port which is already captured by some other application(oracle) ?? |
50. java.net.ConnectException: Connection refused: MYSQL coderanch.com** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: java.net.ConnectException: Connection refused: connect STACKTRACE: java.net.SocketException: java.net.ConnectException: Connection refused: connect at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:151) at com.mysql.jdbc.MysqlIO. |
51. [SOLVED] - Connection to mysql using certificates coderanch.com |
52. [MySQL] Connection reset by peer: socket write error coderanch.comfor using this property you have to add c3p0-0.9.1.jar to lib. you can use other properties also. |
53. mysql connection problem coderanch.comimport java.sql.*; public class MysqlConnect{ public static void main(String[] args) { System.out.println("MySQL Connect Example."); Connection conn = null; String url = "jdbc:mysql://localhost:3306/"; String dbName = "mrk_za_pl"; String driver = "com.mysql.jdbc.Driver"; String userName = "root"; String password = ""; try { Class.forName(driver).newInstance(); conn = DriverManager.getConnection(url+dbName,userName,password); System.out.println("Connected to the database"); conn.close(); System.out.println("Disconnected from database"); } catch (Exception e) { e.printStackTrace(); } } } ... |
54. mysql connection coderanch.com |
55. Max no of Connections in MySql coderanch.comIt depends a lot on what you mean by 10000 users. Registered users? Logged in users? Users making simultaneous requests? Here is one possible way to calculate the required connection pool size: If you assume that each user will spend 5 minutes thinking before entering a request, and each request takes 1 second to process, then you have about 33 simultaneous ... |
56. Problem in Java Connection with MySQL in Linux Mandriva. coderanch.comI have NetBeans 6.8 in Linux Mandriva 2008 . I have Installed MySQL . MySQL is running perfectly. But he problem is with when I connect NetBeans Program With MySQL I am getting following Error. com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. the above 2 lines is an error. Java Code is. import java.sql.Connection; ... |
57. MySQL database connection fails after long idle coderanch.comThis is a MySQL question. I would like to keep a MySQL database open for long periods of time without opening and closing it regularly (reason: it runs under Apache Tomcat, and for each request to the servlet, the servlet gets a request number from a MySQL database and table). However, if left idle for a long period (i.e., no requests ... |
58. connection to remote mysql db coderanch.comFirst of all you should write your code so that it looks at the computer where the database is actually located. Be aware that "localhost" means "this computer" no matter what computer your code is running on. And second you should arrange your network configuration so that your code can actually reach that computer. Based on what you posted there is ... |
60. how to make connection by using mysql coderanch.com |
61. MYSQL 5.0 Connection Time Out coderanch.comHi All, I have written a web application that connects to a MySQL database. Everything works fine for the first 8 hours,When my web application remains in ideal state for 8 hours, then MySQL connection expires. After that restarting the tomcat everthing works fine again. How should i resolve this problem. Please help me. Thanks in Advance |
62. wait _ timeout breaks connection (mysql related) coderanch.comNeed a little help here if possible.... 1) I am using hibernate with mysql and tomcat 6. 2) I wish to alter the default 8 hour wait time that mysql comes with. 3) In doing so I have modifies my /etc/my.inf to include the lines: interactive_timeout=604800 interactive_timeout=604800 I then do a restart of mysql server and a show variable query on ... |
63. connection of eclipse helios and mysql coderanch.comWhen I am trying to connect through eclipse, it is ok for the "mysql" database details are: Database: mysql URL: jdbc:mysql//localhost:3306/mysql username:root and connection test is succeeded but I created another database called OCPJP_simulator and details are Database: OCPJP_simulator URL:jdbc://mysql//localhost:3306/OCPJP_simulator username:root the error message when trying to test connection is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'ocpjp_simulator' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at ... |
64. JDBC MySQL connection delay through iptables dbforums.comHi everyone, I have been using jdbc to connect to a local mysql database on a linux machine. I noticed that once I change the firewall policy to DROP by default using: iptables -P INPUT DROP the line: Connection tempConn = DriverManager.getConnection (connString,user,pwd); takes 3 minuites and 10 seconds. If I change the default policy to ACCEPT: iptables -P INPUT ACCEPT ... |
65. TWO IPs FOR MY MYSQL CONNECTION java-forums.orgI made a program that can use jdbc connection. in there I configured mysql. in there i stored a WAN ip and a LAN ip to connect my server. my program tries to connect my LAN ip first. if it not works (which takes more than 1 minute), it continues to try to connect with my WAN ip. Hence, on another ... |
66. Connection with MySQL java-forums.orgHello Friends. I have been working with Java and MS-SQL Server 2005. Now i want to connect to MySQL. I have downloaded JConnector driver for MySAL but dont know how to install it. I read the instructions on MySQL website but still could'nt installed it. So can anyone please explain me. Any help will be highly appreciated! |
67. MySQL connection tutorials? java-forums.orgOk so I have searched google for a few days now trying to find a good tutorial and even a good example, and have turned up nothing that just shows a working example (as I learn by seeing a working example of something). I also searched the forums for something and nothing came up that really helped. Can someone give me ... |
68. java mysql connection java-forums.org/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package database; import java.sql.*; /** * * @author admin */ public class Connect { private String driverName = "com.mysql.jdbc.Driver"; private String jdbcType = "jdbc:mysql"; private String jdbcUrl = "localhost:3306/database"; private String username = "root"; private String password = ""; private Statement stmt; ... |
69. connection my mysql java-forums.orgi am try to connect to mysql in myeclipse by using mysql-connector-java-5.1.12.tar this is the code: import java.sql.*; public class Connect { public static void main (String[] args) { Connection conn = null; try { String userName = "root"; String password = ""; String url = "jdbc:mysql://localhost/java"; Class.forName ("com.mysql.jdbc.Driver").newInstance (); conn = DriverManager.getConnection (url, userName, password); System.out.println ("Database connection established"); } ... |
70. Mysql connection through netbeans problem forums.oracle.comBecause you haven't loaded the Driver yet, either with Class.forName or DriverManager.registerDriver. Also, I hope your user is really "user" and your password really "pass", because if "user" and "pass" are variables names that url won't work anyway. And, in anycase, you're better off using the getConnection(url, user, pass) form of getConnection anyway. |
71. Mysql -JDBC connection problem forums.oracle.comWell, first of all I'll tell you that the purpose of that piece of code is exactly to perform a run-time check to see if the driver you're looking for is on the classpath. So there's clearly nothing wrong with that piece of code, it does exactly its function. As for putting the driver on your classpath, if you're launching from ... |
72. Problem with USERNAME & PASSWORD creation--JDBC connection with MYSQL forums.oracle.comHow to connect to JDBC with Mysql Connector i installed mysql & created table, it works fine During Password---> I gave it as tiger , no username i installed mysql connector i saved the .jar file path in class path HOW TO CREATE USERNAME & PASSWORD & DATASOURCE NAME ---> Is it the password -tiger or something else like (ADMinstrative tools-ODBC-services--etc ... |
73. connection with MySql forums.oracle.com |
74. error in mysql database connection forums.oracle.comhi this ramesh again........ i tried to run below code : import java.sql.*; public class MysqlConnect{ public static void main(String[] args) { System.out.println("MySQL Connect Example."); Connection conn = null; String url = "jdbc:mysql://localhost:3306/"; String dbName = "lux1"; String driver = "com.mysql.jdbc.Driver"; String userName = "luxmi"; String password = "luxmi"; try { Class.forName(driver).newInstance(); conn = DriverManager.getConnection(url+dbName,userName,password); System.out.println("Connected to the database"); conn.close(); System.out.println("Disconnected ... |
75. define mysql and host connection only 1 place forums.oracle.com |
76. jdbc connection to mysql forums.oracle.com |
77. Got connection to MYSQL DB working, but not to read a file in the database forums.oracle.comThis is my code, it connect 100% to the Database "MySQL", I have tried for 2 hours now but just can't read a file. I have taken out all my tries as it is a mess. This is my connection code, what do I need to read a Mysql table in my SAMPDB ???? PLEASE HELP !!! import java.sql.Connection; import java.sql.DriverManager; ... |
78. Getting an error in JDBC mySQL Connection forums.oracle.com |
79. Unable to make connection to MySQL with JDBC forums.oracle.comHi I am in need of some real help! My problem is that I am unable to make a connection to my MySQL database using Netbeans. I have downloaded the driver from MySQL, unzipped it to my location, and then added it in via NetBeans. In the editor, I can see the database, and the tables after adding the driver. Unfortunately, ... |
80. problem of Mysql connection eclipse forums.oracle.com} the consol send me this: Exception in thread "main" com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where client.Code=06358457AND client.Code=compte.Code' at line 1 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2941) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1623) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1715) at com.mysql.jdbc.Connection.execSQL(Connection.java:3243) at com.mysql.jdbc.Connection.execSQL(Connection.java:3172) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1197) at CTest.CTest.main(CTest.java:30) |
81. problem of Mysql connection forums.oracle.com |
82. arabic encoding problem Connection Between mysql and java forums.oracle.comi have problem i try to print arabic name from mysql but it print it as ????? and the same happen while i'm saving to database form textbox it appear in the db like this ????? i add in the connection property encoding but i still have the same problem i'm using jdbc /odbc plz i need help this is my ... |
83. mysql connection problems forums.oracle.comYou put the jar file on your classpath. If the Class.forName succeeds, the driver is available. If DriverManager.getConnection succeeds, then you have provided a proper URL for that driver, and proper connection parameters for the database. Note that JDBC drivers are not magical. Just like with any other Java class, you have to load the driver class before you can use ... |
84. MYSQL connection timeout? forums.oracle.comcom.mysql.jdbc.CommunicationsException: Communications link failure due to under lying exception: ** BEGIN NESTED EXCEPTION ** java.net.ConnectException MESSAGE: Connection timed out: connect STACKTRACE: java.net.ConnectException: Connection timed out: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket. |
85. Problem in mysql connection forums.oracle.comMy code is here and it is not working what is the problem and how to fix this problem! import java.sql.*; public class MySQLDBCode { public static void main(String[] args) { new MySQLDBCode().connect(); } public void connect( ) { try { Class.forName("com.mysql.jdbc.Driver"); Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test1", "root", "root"); Statement stmt = conn.createStatement(); String query = "Select * from user"; ResultSet rs ... |
86. MySQL db and JAVA quick questio about connections forums.oracle.comprivate void createCharacteristicArray(String current); String strt = ""; int Large = 0; try{ Class.forName ("org.gjt.mm.mysql.Driver").newInstance (); String dbURL = "jdbc:mysql://localhost/MusicWords"; String u = "root"; String p =""; connection = DriverManager.getConnection(dbURL, u, p); Statement statement = connection.createStatement(); ResultSet result = null; // 1. Select Statement String preparedSelect = "SELECT * FROM main WHERE word = ?"; PreparedStatement ps = connection.prepareStatement(preparedSelect); ps.setString(1, current); ... |
87. Question about Java MySQL connection forums.oracle.comHi guys, greetings to y'all, me name is Ryan, I'm new 'round here. I have some questions, I have some application that I build with Java and using MSSQL Server 2000 as it's database, and now I want to try to use MySQL as it's database. I use MySQL server 5.0 and Navicat 8 for MySQL for the gateway and Win ... |
88. java mysql connector/j connection issue forums.oracle.com |
89. MySql with No operations allowed after connection closed. forums.oracle.com |
90. MySql Connection thru internet from Java Console application forums.oracle.com |
91. JDBC Connection Issues with MySQL forums.oracle.comThe code looks okay to me. And the output from the compiler is telling that the build is successful. Does it run? Are you getting to the message that says that you successfully connected to the database? If not, are you getting a stack trace? If so, can you post the full stack trace? |
92. Connection to Mysql Database forums.oracle.comThe connection returned is null, but database DB_NAME exists on SERVER, USERNAME and PASSWORD are correct. AND JConnector also installed properly. And you are sure that MySQL is configured to allow that user to connect to the database from the host from which the attempt is made. Also, do any of those catch blocks print anything? You should have the catch ... |
93. mysql connection forums.oracle.com |