Hi All,
I am very newbie to Hibernate.So today i was trying to do my first example in hibernate.I have created a mysql database .
Then i got all the jar files required for hibernate.I am using eclipse IDE for that.I have configured in hibernate.cfg.xml , log4j.properties and hibernate.properties.
When i was trying to run the program , I have succeeded to do hibernate mapping , then i am getting the following error::

19 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.3.2.GA
30 [main] INFO org.hibernate.cfg.Environment - loaded properties from resource hibernate.properties: {hibernate.connection.username=*******, hibernate.connection.password=*******, hibernate.connection.url=jdbc:mysql://localhost:3306/ipstorage?autoReconnect=true, hibernate.bytecode.use_reflection_optimizer=false, hibernate.connection.driver_class=com.mysql.jdbc.Driver}
34 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist
39 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
130 [main] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml
130 [main] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml
267 [main] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : com/java/hibernate/connection/beans/serverIps.hbm.xml
343 [main] INFO org.hibernate.cfg.HbmBinder - Mapping class: com.java.hibernate.connection.beans.serverIps -> server_ips
368 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: java:hibernate/SessionFactory
444 [main] INFO org.hibernate.connection.ConnectionProviderFactory - Initializing connection provider: org.hibernate.connection.C3P0ConnectionProvider
446 [main] INFO org.hibernate.connection.C3P0ConnectionProvider - C3P0 using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost:3306/ipstorage?autoReconnect=true
447 [main] INFO org.hibernate.connection.C3P0ConnectionProvider - Connection properties: {user=*******, password=******, autocommit=false}
447 [main] INFO org.hibernate.connection.C3P0ConnectionProvider - autocommit mode: false
log4j:WARN No appenders could be found for logger (com.mchange.v2.log.MLog).
log4j:WARN Please initialize the log4j system properly.
1240 [main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: MySQL, version: 5.1.39-community
1240 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.6 ( Revision: ${svn.Revision} )
1271 [main] INFO org.hibernate.dialect.Dialect - Using dialect: org.hibernate.dialect.MySQLDialect
1278 [main] INFO org.hibernate.transaction.TransactionFactoryFactory - Using default transaction strategy (direct JDBC transactions)
1294 [main] INFO org.hibernate.transaction.TransactionManagerLookupFactory - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
1294 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic flush during beforeCompletion(): disabled
1294 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic session close at end of transaction: disabled
1294 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch size: 15
1294 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch updates for versioned data: disabled
1295 [main] INFO org.hibernate.cfg.SettingsFactory - Scrollable result sets: enabled
1295 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC3 getGeneratedKeys(): enabled
1295 [main] INFO org.hibernate.cfg.SettingsFactory - Connection release mode: auto
1296 [main] INFO org.hibernate.cfg.SettingsFactory - Maximum outer join fetch depth: 2
1296 [main] INFO org.hibernate.cfg.SettingsFactory - Default batch fetch size: 1
1296 [main] INFO org.hibernate.cfg.SettingsFactory - Generate SQL with comments: disabled
1296 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL updates by primary key: disabled
1296 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL inserts for batching: disabled
1296 [main] INFO org.hibernate.cfg.SettingsFactory - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
1298 [main] INFO org.hibernate.hql.ast.ASTQueryTranslatorFactory - Using ASTQueryTranslatorFactory
1298 [main] INFO org.hibernate.cfg.SettingsFactory - Query language substitutions: {}
1299 [main] INFO org.hibernate.cfg.SettingsFactory - JPA-QL strict compliance: disabled
1299 [main] INFO org.hibernate.cfg.SettingsFactory - Second-level cache: enabled
1299 [main] INFO org.hibernate.cfg.SettingsFactory - Query cache: disabled
1304 [main] INFO org.hibernate.cfg.SettingsFactory - Cache region factory : org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge
1304 [main] INFO org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge - Cache provider: org.hibernate.cache.NoCacheProvider
1304 [main] INFO org.hibernate.cfg.SettingsFactory - Optimize cache for minimal puts: disabled
1304 [main] INFO org.hibernate.cfg.SettingsFactory - Structured second-level cache entries: disabled
1308 [main] INFO org.hibernate.cfg.SettingsFactory - Echoing all SQL to stdout
1309 [main] INFO org.hibernate.cfg.SettingsFactory - Statistics: disabled
1309 [main] INFO org.hibernate.cfg.SettingsFactory - Deleted entity synthetic identifier rollback: disabled
1309 [main] INFO org.hibernate.cfg.SettingsFactory - Default entity-mode: pojo
1309 [main] INFO org.hibernate.cfg.SettingsFactory - Named query checking : enabled
1368 [main] INFO org.hibernate.impl.SessionFactoryImpl - building session factory
1524 [main] INFO org.hibernate.impl.SessionFactoryObjectFactory - Factory name: java:hibernate/SessionFactory
1525 [main] INFO org.hibernate.util.NamingHelper - JNDI InitialContext properties:{}
1529 [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:75)
at org.hibernate.impl.SessionFactoryObjectFactory.addInstance(SessionFactoryObjectFactory.java:113)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:348)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1341)
at com.java.hibernate.connection.HibernateUtil.<clinit>(HibernateUtil.java:14)
at c.java.hibernate.connection.mainText.main(mainText.java:14)
Exception in thread "main" org.hibernate.SessionException: Session is closed!
at org.hibernate.impl.AbstractSessionImpl.errorIfClosed(AbstractSessionImpl.java:72)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1021)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:342)
at $Proxy0.flush(Unknown Source)
at com.java.hibernate.connection.hibernateImpl.getserverIps(hibernateImpl.java:44)
at com.java.hibernate.connection.mainText.main(mainText.java:15)

My hibernate.cfg.xml 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="java:hibernate/SessionFactory">

<!-- Database connection settings -->
<property name="hibernate.connection.datasource">java:/comp/env/jdbc/MySQLDB</property>
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.connection.username">***</property>
<property name="hibernate.connection.password">***</property>

<!-- configuration pool via c3p0-->
<property name="hibernate.c3p0.acquire_increment">5</property>
<property name="hibernate.c3p0.idle_test_period">1800</property> <!-- seconds -->
<property name="hibernate.c3p0.timeout">180</property> <!-- seconds -->
<property name="hibernate.c3p0.max_size">100</property>
<property name="hibernate.c3p0.max_statements">500</property>
<property name="hibernate.c3p0.min_size">10</property>

<!-- property name="hibernate.c3p0.maxIdleTime">300</property -->

<property name="hibernate.c3p0.acquireRetryAttempts">30</property>
<property name="hibernate.c3p0.testConnectionOnCheckout">true</property>
<property name="hibernate.c3p0.preferredTestQuery">SELECT 1</property>


<!--
JDBC connection pool (use the built-in) <property
name="connection.pool_size">1</property
-->

<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>

<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>

<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>

<property name="connection.autocommit">false</property>

<!--
<property name="hibernate.transaction.factory_class">
org.hibernate.transaction.JTATransactionFactory </property> <property
name="hibernate.transaction.manager_lookup_class">
org.hibernate.transaction.TransactionManagerLookup </property>
-->

<!--
Drop and re-create the database schema on startup <property
name="hbm2ddl.auto"></property>
-->

<mapping
resource="com/java/hibernate/connection/beans/serverIps.hbm.xml" />


</session-factory>

</hibernate-configuration>

my hibernate.properties is :

hibernate.connection.driver_class = com.mysql.jdbc.Driver
hibernate.connection.url = jdbc:mysql://localhost:3306/ipstorage?autoReconnect=true
hibernate.connection.username = ********
hibernate.connection.password = ********


My HibernateUtil.java file is::

package com.java.hibernate.connection;

import org.hibernate.HibernateException;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

private static final SessionFactory sessionFactory;

static {
try {
// Create the SessionFactory from hibernate.cfg.xml
sessionFactory = new Configuration().configure().buildSessionFactory();
} catch (HibernateException ex) {
// Make sure you log the exception, as it might be swallowed
System.err
.println("Hibernate Error:::::Initial SessionFactory creation failed."
+ ex);
ex.printStackTrace();
ex.getCause();
ex.getLocalizedMessage();
ex.getMessage();
ex.getClass();
throw new ExceptionInInitializerError(ex);
}
}

public static synchronized SessionFactory getSessionFactory() {
return sessionFactory;
}
}


My hibernateImpl.java file is :::

package com.java.hibernate.connection;

import java.io.Serializable;
import java.util.Iterator;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.java.hibernate.connection.beans.serverIps;

public class hibernateImpl implements Serializable {

private static final long serialVersionUID = 1L;

@SuppressWarnings("unchecked")
public static void getserverIps(Session session) {

Transaction tx = null;
try {
tx = session.beginTransaction();
List serverips = session.createQuery(
"select id from server_ips as server_id").list();

for (Iterator iter = serverips.iterator(); iter.hasNext();) {
serverIps element = (serverIps) iter.next();
System.out.println(element.getId() + " ::: "
+ element.getServer_name());
}
} catch (RuntimeException e) {
if (tx != null && tx.isActive()) {
try {
// Second try catch as the rollback could fail as well
tx.rollback();
} catch (HibernateException e1) {
System.out.println("Error rolling back transaction");
}
// throw again the first exception
throw e;
}
} finally {
session.flush();
session.close();
}
}
}


Any help will be very much appreciated.
Thanks in Advance

Regards,
Faruk Ali Ahmed

Binding the factory to JNDI makes only sense for hibernate applications deployed on a EJB-container (for example if you deploy Hibernate as a JMX service).
Hibernate tries to bind the factory to JNDI when you specify a name for the factory.
Solution: Simply don't specify a name for the factory in your configuration file, so you get rid of this problem.

thanks pb00067, I have removed the factory name..now its working fine.

Sorry for replying to a dead thread, but I had the same situation and here it's how I solved it:

My session-factory appeared also empty (was: "") but also existed, so I had to remove manually the "" from the file.

Regards,