exception « mysql « Java Database Q&A





1. Weird JDBC executeQuery exception    stackoverflow.com

I have the following code:

 public Object RunQuery(String query) throws Exception{
    System.out.println("Trying to run query");
    Statement stmt = null;
    ResultSet rs = ...

2. Strange Exception on getGeneratedKeys() with JDBC for MySQL 5.1    stackoverflow.com

I'm using JDBC to insert a row into a MYSQL database. I build a parameterized command, execute it and attempt to retrieve the auto generated keys as follows:

String sql = ...

3. mysql unique index used as exception handling method in java    stackoverflow.com

I want to know whether is it a good idea to catch exception based on unique index of sql in java. i want to catch an exception like 'duplicate entry for 1-0' ...

4. com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: in mysql    stackoverflow.com

Hi I have created jdbc program and database is MySQL 5.1 Also all my friends using same database for connection. Total number of connection became 150 from all of us. So when i ...

5. Understanding MySQL Connector/J's FLOSS exception    stackoverflow.com

I have to create an application which transfers data from a local workstation into a remote MySQL database. Unfortunatly my boss doesn't want to pay for a commercial license, because it's ...

6. Mysql syntax exception from jdbc    stackoverflow.com

I'm trying to move the data from one table to another based on names which end with "@localhost", but while moving the data I'm getting an exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error ...

7. Clojure MySQL Syntax Error Exception ("[...] near '????????????????' [...]")    stackoverflow.com

I'm having trouble doing anything with clojure.contrib.sql beyond establishing a connection. I have a mysqld running on localhost:3306 with a database called clj_db. The user 'clj_user'@'localhost' with password 'clj_pass' can access this database. When ...

8. MySQL + JAVA Exception: Before start of result set    stackoverflow.com

try
  {
   PreparedStatement  s = (PreparedStatement) conn.prepareStatement("SELECT voters.Check,count(*) FROM voting.voters where FirstName="+first+"and LastName="+last+" and SSN="+voter_ID);
   //java.sql.Statement k = conn.createStatement();

       ...

9. What's the cause of (and treatment for) this java MySQL exception?    stackoverflow.com

I'm getting the following exception when executing the first preparedstatement after a period of inactivity: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 2,855,054 milliseconds ago. The ...





10. com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Unknown command    stackoverflow.com

I'm trying to create datasource for connection pooling mysql database in Websphere Application Server. I've set the JDBC Provider, I set the

Implementation class name   : com.mysql.jdbc.jdbc2.optional.MysqlConnectionPoolDataSource
my mysql ...

11. com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure    stackoverflow.com

I'm working on getting my database to talk to my Java programs. What do I need to get started? Having already read through (and been thoroughly confused, something that does not happen ...

12. com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Can't call rollback when autocommit=true    stackoverflow.com

Im using Jboss5.0 with mysql in my application. and there will be lot of concurrent actions and DB contains considerably lot of records. this error is coming frequently.. every now and ...

13. Exception in thread "main" java.lang.NoClassDefFoundError: sdb/sdbconfig    stackoverflow.com

I want to export my ontology (made in Protege) into MySQL database. I was following these instructions: http://openjena.org/wiki/SDB/Installation, and http://www.openjena.org/wiki/SDB/Commands. And when I use the command "bin/sdbconfig --sdb=sdb.ttl --create", ...

14. Catching certain FK exception with Jdbc    stackoverflow.com

I am using Jdbc. When a foreign key constraint is broken, a MySQLIntegrityConstraintViolationException is thrown. Right now I just do some pre-checking before doing inserts to prevent this. But I ...

15. Exception on excuteUpdate    stackoverflow.com

I am getting an exception as

com.microsoft.sqlserver.jdbc.SQLServerException: String or binary data would be truncated.  
The exception is thrown at the following line:
PrepareStmt.setBinaryStream(1, new ByteArrayInputStream(data), data.length);  
updatePrepareStmt.executeUpdate();  ...

16. access denied exception using connector/j mysql    stackoverflow.com

I am using mysql and connector/j, trying to connect to the database on my localhost, following this tutorial. Here is a part of the code I am using:

String url = ...





17. com.mysql.jdbc.exceptions .jdbc4.CommunicationsException: Communications link failure    stackoverflow.com

I have a java plugin to an application that I'm using (I didn't write it and don't have the source) that connects to my MySQL database...the only problem is that anytime ...

18. syntax warning showing: exception is never thrown in body of try statement    stackoverflow.com

public class SetupConnection{

  public static Statement setCon(){
    Connection con=null;
    Statement st=null;              ...

19. JDBC returning MySQLSyntaxError Exception with correct statement    stackoverflow.com

I'm writing an application in java which communicates with a MySQL db, and while I was testing it I noticed that the code to insert new rows in a table threw ...

20. Java SQLException: Result Set closed issue    stackoverflow.com

I have this java function that runs and produces an error. I cannot figure out why this is occurring because this is the first function in the program to run ...

21. MYSQL Communication Exception    forums.terracotta.org

22. It gives Class not found exception for mySQL    coderanch.com

Hi all, I just wrote a simple JDBC program as follows. import java.sql.*; public class LoginDAO { Connection con=null; Statement st = null; ResultSet rs= null; public static void main(String arg[]) { LoginDAO da = new LoginDAO(); da.login(); } public LoginDAO() { super(); } public void login() { try { Class.forName("com.mysql.jdbc.Driver"); System.out.println("***********************************THE DRIVER IS REGISTERED********************************"); con=DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/eeeha_database"); System.out.println("***********************************************"+con+"************************************"); System.out.println("***********************************THE CONNECTION IS SET********************************"); ...

23. MYSQL Exception    coderanch.com

24. mysql select exception    coderanch.com

26. com.mysql.jdbc.exceptions.jdbc4.communicationsexception communications link failure    coderanch.com

Hi, I'm getting this exception. Actually i'm running a loop and for many iterations its working fine but after around 25 seconds I get this exception for every iteration. I am using jdk 1.5 , Mysql freeware 5.0 , OS is windows Vista. /** * */ package com.bt; import java.sql.*; /** * @author Aditya Kulkarni * */ public class LibraryDataProvider { ...

28. com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure    coderanch.com

I don't have any clue. org.hibernate.exception.JDBCConnectionException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.loader.Loader.doList(Loader.java:2231) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125) at org.hibernate.loader.Loader.list(Loader.java:2120) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:361) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1148) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) at com.classNameChanged.findByNamedQuery(PersistenceFacadeImpl.java:48) at com.classNameChanged.loadUserByUsername(UserDetailsServiceImpl.java:49) at org.springframework.security.providers.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:83) at org.springframework.security.providers.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:121) at org.springframework.security.providers.ProviderManager.doAuthentication(ProviderManager.java:188) at org.springframework.security.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:46) at org.springframework.security.ui.webapp.AuthenticationProcessingFilter.attemptAuthentication(AuthenticationProcessingFilter.java:82) at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:258) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at ...

29. com.mysql.jdbc.exceptions.jdbc4 error    coderanch.com

Hello, The problem look like this = ). Will describe it in a few steps 1. The program is an applet 2. It connects to the database with the mysql connector 3. Connector is in the ext library in Java folder 4. Applet works perfecly in the AppletViewer in the netbeans 5. It crashes in the browser I thought it was ...

31. com.mysql.jdbc.exceptions.MySQLSyntaxErrorException    coderanch.com

Here is Exception>>>>>>>>> Apr 29, 2011 3:38:16 AM org.apache.catalina.core.StandardContext reload INFO: Reloading this Context has started Apr 29, 2011 3:38:21 AM org.apache.catalina.core.StandardContext reload INFO: Reloading this Context has started A4002 The user enterd password is A4002XYZ Original password is A4002XYZ user name is Sandeep Kumar Soni Designation of employee is Junior Software Engineer Area is Product Support DeptSupport - REALServicing mobile ...

32. MySQL Syntax Exception    coderanch.com

33. Mysql Nested Exception Problem in the DB Cluster Environment    coderanch.com

Hi all, I am using mysql5.0 version and its in cluster environment as defined in mysql-ds.xml file data source definition, When an API call is made from the java application to the clustered DB we are receiving the nested exception error problem for every alternate call to the API(getEmployees()), i.e when the first call is made to the Api from one ...

34. TCP/IP over SSH-com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure    coderanch.com

Hi All, I have MySQL installed in centOS (remote linux), To access mysql i need to loging using my user credential and then use the mysql database credential. In java end I getting the following error as follows: Console Error: 21 Sep 2011 16:06:59,527 4299 [main] WARN org.hibernate.util.JDBCExceptionReporter - SQL Error: 0, SQLState: 08S01 21 Sep 2011 16:06:59,527 4299 [main] ERROR ...

36. MySQL issue: Exception while getting MetaDataInfo    java-forums.org

Hi Folks, Our application is starting MySQL internally during startup. Sometimes, I get the following exception and MySQL doesn't start: [09 Jul 2007 14:05:35:733] Exception while getting MetaDataInfo : Can't create/write to file 'C:\DOCUME~1\sridhar\LOCALS~1\Temp\#sql_884_0.MYI' (Errcode: 13) [09 Jul 2007 14:05:35:733] java.sql.SQLException: Can't create/write to file 'C:\DOCUME~1\sridhar\LOCALS~1\Temp\#sql_884_0.MYI' (Errcode: 13) [09 Jul 2007 14:05:35:748] at com.mysql.jdbc.SQLError.createSQLException(SQLErro r.java:946) [09 Jul 2007 14:05:35:748] at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.ja ...

37. RollBack : Roll Backcom.mysql.jdbc.exceptions.MySQLNonTransientConnectionEx    forums.oracle.com

/** * This bean controls the NCN process. * It controls all statuses in the NCN and * determines when e-mails go out and sends it to the relevant people */ package NCN; import general.stdmtd.StdMethod; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import javax.servlet.http.HttpServletRequest; /** * FIGNCN used to maintain the NCN object details Delane Ragavan ...

38. com.mysql.jdbc.exceptions: Communications link failure    forums.oracle.com

I'm using Netbeans 6.0 to develop a simple JSP to connect to a MySQL database. Here is the code: Connection conn = null; Class.forName("com.mysql.jdbc.Driver").newInstance(); conn = DriverManager.getConnection("jdbc:mysql://localhost/dbtest" , "root",""); I'm getting the following error: javax.servlet.ServletException: Communications link failure Last packet sent to the server was 0 ms ago. org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:843) org.apache.jasper.runtime.PageContextImpl.access$11(PageContextImpl.java:781) org.apache.jasper.runtime.PageContextImpl$12.run(PageContextImpl.java:763) java.security.AccessController.doPrivileged(Native Method) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:761) org.apache.jsp.index_jsp._jspService(index_jsp.java:74) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) ...

40. Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsEx    forums.oracle.com

apologies, heres the error: Driver Loaded Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) at com.mysql.jdbc.MysqlIO.(MysqlIO.java:344) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2333) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2370) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2154) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:792) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) ...