JDBC Delete Command Locking Database?

Aug 27, 2014

I have a problem where i cant seem to get this simple delete command working. Everytime i run it it just locks the database and crashes

The id parameter exists in the database the database is small. Only a few tables. update commands work completely fine.

The id is an in and resulting command is - DELETE from Employees where ID = 2;

public static void EmployeeDeleteByID(int idIn){
Connection c = null;
Statement stmt = null;
try {
c = Connect();
c.setAutoCommit(false);
System.out.println("Opened database successfully");

[code]....

Error after running : java.sql.SQLException: database is locked

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JSP :: Delete Database Record With JQuery?

Nov 4, 2014

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String delete = ("DELETE FROM anagrafica WHERE Nome = ? And Cognome = ?");
ConnectionManager cm = new ConnectionManager();
String Nome = request.getParameter("nome");
String Cognome = request.getParameter("cognome");

[code]....

and this is my JSP.The problem is easy, when I click on the grid for deleting the record two things happen, or the record is deleted only on JSP but not in my Database or Nothing happens even on my JSP, it is because I don't know how to get values from my jsp and send them to replace the ? in my delete query I tried even to give a name to the <tr> which contains Name and Last name but obviously i guess it works only for input type ex. Textbox.

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I currently have all the code working to fill my database and to display it, although I would like to have it displaying in a JPanel but I cannot figure it out so a JFrame will do. Add, Edit and Delete button for the JTable so I can add rows to the table and database, edit existing rows and delete rows also.

Here is the code for my current class.

package ManGUI;
import Database.DatabaseOperations;
import javax.swing.*;
import javax.swing.border.BevelBorder;
import javax.swing.table.DefaultTableModel;
import javax.xml.crypto.Data;

[Code] .....

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JDBC :: How To Retrieve Just One Value From Database

Nov 25, 2014

I wish to retrieve just one value from db;
 
so I use this code:

@Transactional
    public long getSequenceSedeB(Long id) {
        BigDecimal seqValue = nu
        String sql = "SELECT MAX(ID) FROM SEDE_B_ALLEGATI_A WHERE ID_SEDE=:id";
        SQLQuery query = getSession().createSQLQuery(sql);

[Code] ....

But it do not works; this is the log.

type.NullableType (NullableType.java:182) - could not read column value from result set: ID; Invalid column name

2014-11-25 14:45:14,476 WARN  [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:77) - SQL Error: 17006, SQLState: null
2014-11-25 14:45:14,478 ERROR [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:78) - Invalid column name

 But in the database the query
 
SELECT MAX(ID) FROM SEDE_B_ALLEGATI_A WHERE ID_SEDE=:id
 
run correctly;
 
Also I need to rewrite the statement
   query.setParameter("id", 923);
in this way
   query.setParameter("id", AAA);
 
where AAA is gotten from out of the procedure;

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Feb 26, 2015

I'm having problem with my code when it comes to Restore Database in Java. This is my code:

public boolean restoreDB(String dbUserName, String dbPassword, String source) {
String[] executeCmd = new String[]{"C:Program Files (x86)MySQLMySQL Server 5.1inmysqldump ", "--user=" + "root", "--password=" + "1234" + source};
Process runtimeProcess;
try {
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[Code] ....

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JDBC Connectivity With MySQL Database

Apr 24, 2014

I created a database in mysql, but I have problems communicating with the DB in java.

Here is the error :

java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/books
at java.sql.DriverManager.getConnection(DriverManager.java:604)
at java.sql.DriverManager.getConnection(DriverManager.java:221)
at displayauthors.DisplayAuthors.main(DisplayAuthors.java:30)
java.lang.NullPointerException

[Code] ....
 
HERE IS THE CODE 

public class DisplayAuthors {   
// database URL                             
   static final String DATABASE_URL = "jdbc:mysql://localhost:3306/books";
   // launch the application
   public static void main( String args[] )

[Code] ....

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JSP :: How To Delete Data From Database Through Check Box Using Html Table On Page

Jan 22, 2014

Problem code:

JSP 1:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@page import="java.sql.*;" %>
<%!Connection con;%>
<%!Statement stmt = null;%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "[URL]...">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

[Code]...

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Mar 13, 2015

This question is not about syntax but a best way to handle something. What is the best way to store a image into a database? For example converting it into binary etc. I just wanted to get some opinions.

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Jun 23, 2015

This the output of java from my PC under linux platform (rhel 6.5).
 
[pentaho@vertica-srv1 Downloads]$ java -version
java version "1.7.0_79"
Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)
 
[Code] ....
 
But the problem is while trying to open ETL program under linux platform [pentaho@vertica-srv1 data-integration]$ ./spoon.sh .... I received the following error messages.
 
[pentaho@vertica-srv1 data-integration]$ ./spoon.sh
 
Trying to add database driver (JDBC): RmiJdbc.RJDriver - Warning, not in CLASSPATH?
Trying to add database driver (JDBC): jdbc.idbDriver - Warning, not in CLASSPATH?
Trying to add database driver (JDBC): org.gjt.mm.mysql.Driver - Warning, not in CLASSPATH?
Trying to add database driver (JDBC): com.mckoi.JDBCDriver - Warning, not in CLASSPATH?
[KnowledgeFlow] Loading properties and plugins...

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Dec 19, 2014

What is correct url to connect to db with orcl SID using IPC protocol? Couldn't find this in documentation....
 
jdbc:oracle:oci:@[WHAT GOES HERE?]

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Aug 21, 2014

I have completed an assignment for my university in which I had to make a Java NetBeans project. My project is now completed but now I have to make a setup of my NetBeans project and give the university the setup file, only.

My question is, the software I made has a database attached to it, meaning the purpose of the software is to be used with the database. Values must be saved in the database, deleted from the database etc.. I have used MySQL database connections with the JDBC driver

I have used exe4j to make the .exe file and Setup Factory to make the exe file and setup file respectively. Once I make the setup and run the setup, the application works, ON MY COMPUTER. The computer which made the software. But once I take it to a computer in which MySQL was not installed, the setup installed, but the software did not work.

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Jul 10, 2015

I have small Java code, which execute every day and checks for data in database using Cronj Schedular and everything works fine, but recently I have observed that, it is failing due to
  
    java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.110.xx.xxx:1521/test
 
At the same time, when I run my test code to check Database connectivity that works fine without above exception. I'm unable to figure it out. Although, there was just slight code change, but that was nowhere related to Database or Database connection.  
 
dbconf.java
    public class dbconf {
    private Connection connect;
    private String connstr;
    public Connection getConnection() throws SQLException {
    connstr = "jdbc:oracle:thin:@160.110.xx.xxx:1521/test";

[Code] .... 
 
Application Log file
 
    Wed Jul 01 09:25:17 IST 2015:------- Initializing -------------------
    Wed Jul 01 09:25:17 IST 2015:------- Scheduling Jobs ----------------
    Wed Jul 01 09:25:17 IST 2015:------- Job Started Running ----------------
    Thu Jul 02 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2
    java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.xxx.67.xxx:1521/test
    Sat Jul 04 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2
    Sun Jul 05 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2
    java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.xxx.67.xxx:1521/test
 
So, you can see, It failed on 3rd of July and 5th July as well. But, in between it ran fine.

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Jun 1, 2015

I have a template file which I'm tring to upload into a database using setBlob or setBinaryStream but I'm getting the following error:
 
java.lang.AbstractMethodError: setBlob
  at weblogic.jdbc.wrapper.PreparedStatement.setBlob(PreparedStatement.java:1005)
  at com.capitalone.citrix.ssp.dao.KatetDaoImpl.uploadReport(KatetDaoImpl.java:1697)
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  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

[Code] .....
 
I'm using :

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
Weblogic Server Versions: 10.3.0.0 with Java 1.6.0_05

The driver class name for the weblogic datasource: weblogic.jdbcx.oracle.OracleDataSource
 
Initially, I tried:
     
           sqlQuery = new StringBuffer();
                ps = null;
                sqlQuery.append("insert into KATET_REPORTS (FILE_DATA)");

[Code] ....
 
This failed, so I changed ps.setBlob(1,is)
to
ps.setBinaryStream(1,is). This failed as well with teh same error, just for setBinaryStream instead of setBlob.
 
Is there a known inconsistency between that driver and this Weblogic version? Is there something else going on? If I haven't given enough data to debug the issue here, what other data should I gather?

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Aug 17, 2014

I am trying to run a simple program that connects to a mysql database and prints out some fields. I am using Eclipse.

THe problem I am having is on the following line of code.

Class.forName("com.mysql.jdbc.Driver");

I get an error:

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)

[Code] ....

I have done some research and from what I have found is that I need to alter the class path to pick up the driver. When I downloaded the .msi I ran it and then the program closed. Where the files are ??? How to locate and import the file so I need to get my program to run?

I have included all the of the source code below.

package mySQLConnect;
import java.sql.*;
public class Connect {
// JDBC Driver name and database URL
static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String BD_URL = "jdbc:mysql://localhost/sstbde";

[Code] .....

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We currently have an application which uses JDBC to connect to the backend database (DB version - 11.2.0.3 ). The application uses a properties file in which the password for the db schema is hardcoded in plain text format. Due to security restrictions we have been asked to make sure the password is encrypted in the file and no direct access is made to the schema using the plain text password. Best options we can use to make this password encrypted both at Oracle DB side and Java side.

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Mar 2, 2015

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package tiled;
 import org.newdawn.slick.*;
import org.newdawn.slick.state.*;
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[code]....

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create proc patientreg
@id int
as
begin
select [patient_id],[Psurname], [pFirstname], [pMiddlename], [reg_date], [DOB], [Sex], [Phone_num], [Addr],[Email],[dbo].[fncomputeage](DOB) from [dbo].[Patient_registration] where [patient_id] = @id
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please note dbo.fncompute(DOB) is a function

To call it in jdbc it goes like this

try{
String str = "{call patientreg(?)}";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbcdbc:GeneralHospit al");
cstmt = con.prepareCall(str);
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[code]....

after doing it this way it throwing an exception: Error:java.sql.SQLException: Parameter 1 is not an OUTPUT parameter.

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private final Object lock = new Object();
synchronized (lock)
public class DemoClass
{
public void demoMethod(){
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[code]....

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package hundRegister;
import java.util.Scanner;
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[Code] ......

So, when I enter a name on a dog that exist on my list, it just jumps down to } else { and write that dog can't be found even if I write the exact name on the dog.

I can't see what I'm doing wrong, been trying out different methods now.

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[code]....

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