How to synchronize two database in ur java program

Hi All
How to synchronize two data base of mysql using java programing language?
If somebody has any idea that will help me a lot.
Thanks and regards
Srikant

Of corse I have an idea, but not good!
If you know the database stucture then copy data from one to another.
Open 2 connections: one to source and one to dest.
And:
String sql = "SELCET * from mytable1";// from source
string sql2;
Statement st1 = connSrc.createStatement();
Statement st2 = connDest.createStatement();
ResultSet rs = st1.executeQuerry(sql);
while(rs.next()){
sql2 = "INSERT INTO mytable1 ('field1', 'filed2') VALUES ("+
"'"+rs.get(filed1")+"',"+
"'"+rs.get(filed2')+"'"+
st2.executeUpdate(sql2);
// the destination was cleared before this: DELETE FROM mytable1 WHERE 1
This is a mysql sample without processing the errors.
Szabi

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How to synchronize two database

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I am using oracle 10R2 in solaris 10. I am trying one scenario, but unable to come with solution. please give your suggestion.
In machine A, I have one database called DB1 and its up and running. Now I took cold backup and created the same database in another machine called
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Now the database are running in both machine A & B ( both are same at present).
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Oracle Streams, a built-in feature of the Oracle database, is a data replication and integration feature. It provides a flexible infrastructure that meets a wide variety of information sharing needs. Oracle Streams enables the propagation of data, transactions and events in a data stream either within a database, or from one database to another. Click on the following links for further details on Oracle Streams
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Attachments:
host1.png ‏47 KB
fpga1.png ‏131 KB

Posted response to this in the following thread:
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As a java starter in learning Synchronization. how simply can I Synchronize two methods
for example I have the following.
public class Process {
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A-KADRI wrote:
HI All,
As a java starter in learning Synchronization. how simply can I Synchronize two methods
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I have studied Java for some time, but never had
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Here's a set of (some) answers based on my experience (which is NOT synchronizing two databases, but on synchronizing sets of files across a tree of file servers.)
Hello
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2. Java rmi is fine for doing this kind of work. However I can't give you any performance guarantees. You probably need to get some fine requirements and write some model programs.
3. YOU are responsible for security. RMI gives you connectability; you have to develop some kind of cross-authentication procedure as part of you application.
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o If the two sites use "Virtual private networks", then both the security issue and the firewall issue are mostly solved for you.
o Otherwise, and maybe even with vpn, you will have to do a little bit of work to use fixed port numbers. (The way rmi works is that there is a listener at a fixed port which will let a remote program "look up" a local object; after that, communication takes place object-object over a randomly-assigned port.) It takes about a dozen lines of code to make this work.
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Finally, an application item that may or may not be an issue: Two databases, two platforms == possible character set conversion problems.

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Hibernate query...how to connect two databases...

hi i m new to hibernate..
i created two tables..
1st table is catalog:
2nd table is acctinfo
//HBM file is :
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="hibernate.example.Catalog" table="catalog">
<id name="id" type="integer" column="ID">
<generator class="increment"/>
</id>
<property name="journal" type="string" column="JOURNAL"/>
<property name="publisher" type="string" column="PUBLISHER"/>
<property name="edition" type="string" column="EDITION"/>
<property name="title" type="string" column="TITLE"/>
<property name="author" type="string" column="AUTHOR"/>
<bag name="accinfo" cascade="all" >
<key column="ID"/>
<one-to-many class="hibernate.example.Acctinfo"/>
</bag>
</class>
<class name="hibernate.example.Acctinfo" table="acctinfo">
<id name="id" type="integer" column="ID">
<generator class="increment"/>
</id>
<property name="account" type="string" column="ACCOUNT"/>
<property name="password" type="string" column="PASSWORD"/>
<property name="balance" type="string" column="BALANCE"/>
</class>
</hibernate-mapping>
///******************getter setter file is::****************
package hibernate.example;
public class Acctinfo
     int id;
     String account;
     String password;
     String balance;
     public Acctinfo()
     public void setId(int id)
          this.id = id;
     public int getId()
          return id;
     public void setAccount(String account)
          this.account = account;
     public void setPassword(String password)
          this.password = password;
     public void setBalance(String balance)
          this.balance = balance;
     public String getAccount()
          return account;
     public String getBalance()
          return balance;
     public String getPassword()
          return password;
//********************2nd getter setter file is:***********************
package hibernate.example;
import java.util.List;
public class Catalog
int id;
String journal;
String publisher;
String edition;
String title;
String author;
private List accinfo;
public Catalog()
public void setId(int id)
this.id = id;
public int getId()
return id;
public void setJournal(String journal)
this.journal = journal;
public String getJournal()
return journal;
public void setPublisher(String publisher)
this.publisher = publisher;
public String getPublisher()
return publisher;
public void setEdition(String edition)
this.edition = edition;
public String getEdition()
return edition;
public void setTitle(String title)
this.title = title;
public String getTitle()
return title;
public void setAuthor(String author)
this.author = author;
public String getAuthor()
return author;
public void setAccinfo(List accinfo)
this.accinfo = accinfo;
public List getAccinfo()
return accinfo;
* To change this template, choose Tools | Templates
* and open the template in the editor.
package hibernate.example;
import hibernate.example.Acctinfo;
import hibernate.example.Catalog;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import org.hibernate.Query;
import org.hibernate.SQLQuery;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
public class CatalogClient
     Session session = null;
     SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
     public static void main(String str[])
          CatalogClient clc = new CatalogClient();
          //clc.saveData();
          //clc.deleteData();
          //clc.showData();
          clc.updateData();
     public void showData()
          try
               session =sessionFactory.openSession();
               String SQL_QUERY ="select id, journal, publisher, edition, title, author from catalog";
               // String SQL_QUERY ="select c.ID, c.JOURNAL, c.PUBLISHER, c.EDITION, c.TITLE, c.AUTHOR, a.ACCOUNT, a.PASSWORD,a.BALANCE from catalog c, ACCTINFO a where c.ID = a.ID";
               SQLQuery query = session.createSQLQuery(SQL_QUERY);
               System.out.println("*** query : *** "+ query);
               //for(ListIterator it=query.list().listIterator();it.hasNext();)
               for (ListIterator lit = query.list().listIterator(); lit.hasNext();)
                    Object[] row = (Object[]) lit.next();
                    /*System.out.println("ID: " + row[0]);
                    System.out.println("Title: " + row[1]);
                    System.out.println("Author: " + row[2]);
                    System.out.println("Isbn: " + row[3]);
                    System.out.println("Pages: " + row[4]);
                    System.out.println("Copyright: " + row[5]);
                    System.out.println("Cost: " + row[6]);
                    System.out.println("******NEXT****************");
Object[] row = (Object[]) it.next();*/
                    System.out.println("ID: " + row[0]);
                    System.out.println("JOURNAL: " + row[1]);
                    System.out.println("PUBLISHER: " + row[2]);
                    System.out.println("EDITION: " + row[3]);
                    System.out.println("TITLE: " + row[4]);
                    System.out.println("AUTHOR: " + row[5]);
                    System.out.println("acc: " + row[6]);
                    System.out.println("pass: " + row[7]);
                    System.out.println("bal: " + row[8]);
                    System.out.println("***************************");
               session.close();
          catch(Exception e)
               System.out.println(e.getMessage());
     public void saveData()
          session =sessionFactory.openSession();
          Transaction transaction = null;
          transaction = session.beginTransaction();
          Catalog catalog = setBean();
          //System.out.println("before save");
          session.save(catalog);
          //System.out.println("after save");
          transaction.commit();
          session.flush();
          session.close();
     public void updateData()
          session =sessionFactory.openSession();
          Catalog catalog = new Catalog();
          catalog.setId(2);
          catalog.setAuthor("manoj");
          catalog.setJournal("java");
          catalog.setEdition("1st");
          catalog.setPublisher("indiabulls");
          catalog.setTitle("java Servlet");
          session.update(catalog);
          session.flush();
          session.close();
     public void deleteData()
          session =sessionFactory.openSession();
          Catalog catalog = new Catalog();
          catalog.setId(3);
          session.delete(catalog);
          session.flush();
          session.close();
     public static Catalog setBean()
          Acctinfo accinfo = new Acctinfo();
          accinfo.setAccount("MANOJ1");
          accinfo.setPassword("orbis");
          accinfo.setBalance("1000");
          List list = new ArrayList();
          list.add(accinfo);
          Catalog catalog = new Catalog();
          catalog.setJournal("india");
          catalog.setPublisher("indiabulls");
          catalog.setEdition("ist");
          catalog.setTitle("orbis");
          catalog.setAuthor("manoj");
          catalog.setAccinfo(list);
          return catalog;
//********************CFG FILE IS ******************
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="session">
<property name="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</property>
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@172.16.31.25:1521:BOMBAY</property>
<property name="hibernate.connection.username">mumbai</property>
<property name="hibernate.connection.password">mumbai123</property>

<property name="connection.autocommit">true</property>
<property name="dialect">org.hibernate.dialect.OracleDialect</property>

<mapping resource="Catalog.hbm.xml"/>
</session-factory>
</hibernate-configuration>
**********************error i m facing is :************************
0 [main] WARN net.sf.ehcache.config.Configurator - No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/C:/Documents%20and%20Settings/d.poonam/Desktop/hibernate/lib/ehcache-1.1.jar!/ehcache-failsafe.xml
1188 [main] WARN org.hibernate.impl.SessionFactoryObjectFactory - Could not bind factory to JNDI
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
     at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
     at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
     at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)
     at javax.naming.InitialContext.getNameParser(Unknown Source)
     at org.hibernate.util.NamingHelper.bind(NamingHelper.java:52)
     at org.hibernate.impl.SessionFactoryObjectFactory.addInstance(SessionFactoryObjectFactory.java:90)
     at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:247)
     at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
     at hibernate.example.CatalogClient.<init>(CatalogClient.java:24)
     at hibernate.example.CatalogClient.main(CatalogClient.java:27)
please help me out....
thanks in advance..
if u know how to connect two tables plz let me know..
its urgent....

I made this work with MySQL. Adapt to your situation as needed. - %
package hibernate.model;
import hibernate.util.HibernateUtils;
import hibernate.model.Catalog;
import hibernate.model.Account;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Session;
import hibernate.util.HibernateUtils;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotNull;
public class CatalogTest
   private static final Log LOGGER = LogFactory.getLog(CatalogTest.class);
   public static void main(String[] args)
      Session session = null;
      try
         session = HibernateUtils.getSessionFactory().getCurrentSession();
         session.beginTransaction();
         int rowsBefore = HibernateUtils.getRowCount(session, Catalog.class);
         assertEquals("should not have any Catalogs", rowsBefore, 0);
         Catalog catalog = new Catalog("test title");
         catalog.addAccount(new Account(100));
         catalog.addAccount(new Account(200));
         Long id = (Long) session.save(catalog);
         assertNotNull("generated id should not be null", id);
         LOGGER.info("returned id: " + id);
         session.getTransaction().commit();
         LOGGER.debug("transaction committed");
      catch (Exception e)
         LOGGER.error(e);
         session.getTransaction().rollback();
package hibernate.model;
import java.io.Serializable;
import java.text.NumberFormat;
public class Account implements Serializable
   private Long id;
   private int balance;
   public Account()
      this(null, 0);
   public Account(int balance)
      this(null, balance);
   public Account(Long id, int balance)
      this.id = id;
      this.balance = balance;
   public Long getId()
      return id;
   private void setId(Long id)
      this.id = id;
   public int getBalance()
      return balance;
   private void setBalance(int balance)
      this.balance = balance;
   public boolean equals(Object o)
      if (this == o)
         return true;
      if (!(o instanceof Account))
         return false;
      Account account = (Account) o;
      return !(id != null ? !id.equals(account.id) : account.id != null);
   public int hashCode()
      int result;
      result = (id != null ? id.hashCode() : 0);
      result = 31 * result + balance;
      return result;
   public String toString()
      return new StringBuilder().append("Account{").append("id=").append(id).append(", balance=").append(NumberFormat.getCurrencyInstance().format(balance)).append('}').toString();
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
      "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
      "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="hibernate.model" default-access="field" default-lazy="true">
   <class name="Account" table="accounts">
      <id name="id" column="account_id">
         <generator class="native"/>
      </id>
      <property name="balance" column="balance"/>
   </class>
</hibernate-mapping>
package hibernate.model;
import java.io.Serializable;
import java.util.Set;
import java.util.HashSet;
import java.util.Collections;
public class Catalog implements Serializable
   private Long id;
   private String title;
   private Set<Account> accounts;
   public Catalog()
      this(null, "", Collections.EMPTY_SET);
   public Catalog(String title)
      this(null, title, Collections.EMPTY_SET);
   public Catalog(Long id, String title, Set<Account> accounts)
      this.id = id;
      this.title = title;
      this.accounts = new HashSet<Account>(accounts);
   public Long getId()
      return id;
   private void setId(Long id)
      this.id = id;
   public String getTitle()
      return title;
   private void setTitle(String title)
      this.title = title;
   public Set<Account> getAccounts()
      return accounts;
   private void setAccounts(Set<Account> accounts)
      this.accounts = accounts;
   public void addAccount(Account account)
      this.getAccounts().add(account);
   public void removeAccount(Account account)
      this.getAccounts().remove(account);
   public boolean equals(Object o)
      if (this == o)
         return true;
      if (!(o instanceof Catalog))
         return false;
      Catalog catalog = (Catalog) o;
      return !(id != null ? !id.equals(catalog.id) : catalog.id != null);
   public int hashCode()
      return (id != null ? id.hashCode() : 0);
   public String toString()
      return new StringBuilder().append("Catalog{").append("id=").append(id).append(", title='").append(title).append('\'').append(", accounts=").append(accounts).append('}').toString();
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
      "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
      "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="hibernate.model" default-access="field" default-lazy="true">
   <class name="Catalog" table="catalogs">
      <id name="id" column="catalog_id">
         <generator class="native"/>
      </id>
      <property name="title" column="title"/>
      <set name="accounts" cascade="all">
         <key column="catalog_id"/>
         <one-to-many class="hibernate.model.Account"/>
      </set>
   </class>
</hibernate-mapping>
<!DOCTYPE hibernate-configuration PUBLIC
     "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
     "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
     <session-factory>
      <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
      <property name="connection.url">jdbc:mysql://localhost:3306/hibernate?autoReconnect=true</property>
      <property name="connection.username">hibernate</property>
      <property name="connection.password">hibernate</property>
      <property name="connection.pool_size">1</property>
      <property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
      <property name="show_sql">true</property>
      <property name="generate_statistics">true</property>
      <property name="query.factory_class">org.hibernate.hql.classic.ClassicQueryTranslatorFactory</property>
      <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
      <property name="cache.use_minimal_puts">false</property>
      <property name="cache.use_query_cache">false</property>
      <property name="order_updates">false</property>
      <property name="hbm2ddl.auto">create-drop</property>
      <property name="current_session_context_class">thread</property>
      <mapping resource="hibernate/persistence/hibernate/Account.hbm.xml"/>
      <mapping resource="hibernate/persistence/hibernate/Catalog.hbm.xml"/>
     </session-factory>
</hibernate-configuration>

How to compare two database on different servers

hi,
I want to compare two database on different servers in oracle.first i want to ckechk thier structures and then data.i m using oracle 10.2.0.plz help me out
Thanks in advance

In terms of structures, there are various tools out there that can do this, such as TOAD which can do a database compare.
In terms of data comparisons, that will depend on what sort of results you are expecting to see. I'm sure some tools will do it for you, but it can be just as easy to write your own comparison using a database link from one database to the other.

How can I use MS Word within java programming

Hi everyone!
I am developing a Java program that will take data
from an Access 2000 database, and manipulate it,
display the results graphically and in tables. The
challenge for me is that I want the program insert the
graphics and tables into the MS Word template and then
prompt me to save it as a word * .doc. Do you know
of any articles or sources of sample code on how to do
this. The Java environment is Java2, JDK 1.3,
JBuilder4. The OS environment is XP.
Regards,
Farad

Hi, I also need that package. my e-mail is [email protected] Plese send me that. Thanks in advance
I have a package that will do this for you. I just
need to get your email to send an attachment and
examples.

SAP database updations through Java program

Hi All,
From Java program, I want to access SAP database batch RFC
Please tell me which batch RFC's I have to use for read and update of a table.
Please also tell me how to find out a batch RFC for a particular table.Is there any way to find it out like BAPI.
What are the steps and settings ?
Detailed steps help the requirement.
Thanks,
Giri

Giri,
Ya...Java APP sents data to XI and XI needs to insert the data into the database.
Before the next round of data is sent by the Application, Xi should sent back info on the status of the records.
Is this what you want?
This will be like I have pointed earlier possible without a BPM. But, make the call from the sending application Synchronous. And then map the JDBC response to the calling aplication.
But this updation is only possible through XI.
If i got the requirement wrong can you let me know in more detail, what is it that you are trying?
Reward if solved

Possible to Get Database backup with java program

Hello
Is it possible to Get or Create Database Backup on runtime with java program using some sql statements
How could i do that
'

Cross posted and multi-posted.
Hey jackass why don't you look where I already answered this question.
http://forum.java.sun.com/thread.jspa?threadID=654902&messageID=3849575

How to synchronize two database in ur java program

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