Hi All,

I am trying with a sample application for learning hibernate.

I am using hibernate 3 with MySQL database. I want to save a sample object-Event-(which has only 2 properties 'id' and 'name') to the database. But when i run my application with the following lines of code it run with out any errors, But the data not saved in the database.

Configuration cfg=new Configuration();
SessionFactory factory = cfg.configure().buildSessionFactory();
Session session = factory.openSession();
Event testevent = new Event();
testevent.setName("ABCD");
session.save(testevent);
session.flush();
session.close();

I tried to analyse the log. But upto my knowledge i could nt figureout the issue. Because of that, to analyse my problem in detail, I am attaching the stacktrace also.

----------------------------------------------------------------
[echo] If you see this, it compiled
build:
[java] 0 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.2.2
[java] 30 [main] INFO org.hibernate.cfg.Environment - loaded properties from resource hibernate.properties: {hibernate.connection.username=root, hibernate.connection.password=****, hibernate.dialect=org.hibernate.dialect.MySQLDialect, hibernate.connection.url=jdbc:mysql://localhost/events_calendar, hibernate.bytecode.use_reflection_optimizer=false, hibernate.connection.driver_class=com.mysql.jdbc.Driver}
[java] 32 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : cglib
[java] 74 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
[java] Welcome to Event Calendar 2005.
[java] 738 [main] WARN com.manning.hq.ch02.EventCalendar2 - Welcome to Event Calender v2 2005
[java] 739 [main] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml
[java] 739 [main] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml
[java] 2421 [main] DEBUG org.hibernate.util.DTDEntityResolver - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd]
[java] 2422 [main] DEBUG org.hibernate.util.DTDEntityResolver - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
[java] 2431 [main] DEBUG org.hibernate.util.DTDEntityResolver - unable to locate [http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd] on classpath
[java] 2432 [main] ERROR org.hibernate.util.DTDEntityResolver - Don't use old DTDs, read the Hibernate 3.x Migration Guide!
[java] 4796 [main] DEBUG org.hibernate.cfg.Configuration - null<-org.dom4j.tree.DefaultAttribute@8c436b [Attribute: name resource value "com/manning/hq/ch02/Event.hbm.xml"]
[java] 4797 [main] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : com/manning/hq/ch02/Event.hbm.xml
[java] 4800 [main] DEBUG org.hibernate.util.DTDEntityResolver - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd]
[java] 4800 [main] DEBUG org.hibernate.util.DTDEntityResolver - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
[java] 4808 [main] DEBUG org.hibernate.util.DTDEntityResolver - unable to locate [http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd] on classpath
[java] 4809 [main] ERROR org.hibernate.util.DTDEntityResolver - Don't use old DTDs, read the Hibernate 3.x Migration Guide!
[java] 5948 [main] INFO org.hibernate.cfg.HbmBinder - Mapping class: com.manning.hq.ch02.Event -> events
[java] 6006 [main] DEBUG org.hibernate.cfg.HbmBinder - Mapped property: id -> uid
[java] 6132 [main] DEBUG org.hibernate.cfg.HbmBinder - Mapped property: name -> name
[java] 6133 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: null
[java] 6133 [main] DEBUG org.hibernate.cfg.Configuration - properties: {java.runtime.name=Java(TM) SE Runtime Environment, hibernate.connection.password=root, sun.boot.library.path=C:\Program Files\Java\jre1.6.0\bin, java.vm.version=1.6.0-oem-b104, ant.library.dir=d:\JBEclipse\plugins\org.apache.ant_1.6.5\lib, hibernate.connection.username=root, java.vm.vendor=Sun Microsystems Inc., java.vendor.url=http://java.sun.com/, path.separator=;, java.vm.name=Java HotSpot(TM) Client VM, file.encoding.pkg=sun.io, user.country=US, sun.java.launcher=SUN_STANDARD, sun.os.patch.level=, java.vm.specification.name=Java Virtual Machine Specification, user.dir=C:\work\calendar, java.runtime.version=1.6.0-oem-b104, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, java.endorsed.dirs=C:\Program Files\Java\jre1.6.0\lib\endorsed, os.arch=x86, java.io.tmpdir=C:\Users\sreevals\AppData\Local\Temp\, line.separator=
[java] , java.vm.specification.vendor=Sun Microsystems Inc., user.variant=, os.name=Windows Vista, ant.home=d:\JBEclipse\plugins\org.apache.ant_1.6.5, sun.jnu.encoding=Cp1252, java.library.path=C:\Windows\system32;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\9.0\DLLShared\;C:\jdk1.5.0_09\bin\;C:\apache-maven-2.0.9\bin\;C:\applications\apache-ant-1.7.1\bin\;C:\applications\mysql\bin;d:\JBEclipse\configuration\org.eclipse.osgi\bundles\114\1\.cp, java.specification.name=Java Platform API Specification, java.class.version=50.0, sun.management.compiler=HotSpot Client Compiler, os.version=6.0, user.home=C:\Users\sreevals, user.timezone=Asia/Calcutta, java.awt.printerjob=sun.awt.windows.WPrinterJob, file.encoding=Cp1252, java.specification.version=1.6, hibernate.connection.driver_class=com.mysql.jdbc.Driver, java.class.path=D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-antlr.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-bcel.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-bsf.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-log4j.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-oro.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-regexp.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-resolver.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-commons-logging.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-commons-net.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-icontract.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jai.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-javamail.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jdepend.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jmf.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jsch.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-junit.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-launcher.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-netrexx.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-nodeps.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-starteam.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-stylebook.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-swing.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-trax.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-vaj.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-weblogic.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-xalan1.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-xslp.jar;D:\JBEclipse\configuration\org.eclipse.osgi\bundles\68\1\.cp\lib\remoteAnt.jar;C:\jdk1.5.0_09\lib\tools.jar;D:\JBEclipse\plugins\org.eclipse.swt.win32.win32.x86_3.1.1.jar, user.name=sreevals, hibernate.bytecode.use_reflection_optimizer=false, java.vm.specification.version=1.0, java.home=C:\Program Files\Java\jre1.6.0, sun.arch.data.model=32, hibernate.dialect=org.hibernate.dialect.MySQLDialect, hibernate.connection.url=jdbc:mysql://localhost/events_calendar, user.language=en, java.specification.vendor=Sun Microsystems Inc., awt.toolkit=sun.awt.windows.WToolkit, java.vm.info=mixed mode, sharing, java.version=1.6.0-oem, java.ext.dirs=C:\Program Files\Java\jre1.6.0\lib\ext;C:\Windows\Sun\Java\lib\ext, sun.boot.class.path=C:\Program Files\Java\jre1.6.0\lib\resources.jar;C:\Program Files\Java\jre1.6.0\lib\rt.jar;C:\Program Files\Java\jre1.6.0\lib\sunrsasign.jar;C:\Program Files\Java\jre1.6.0\lib\jsse.jar;C:\Program Files\Java\jre1.6.0\lib\jce.jar;C:\Program Files\Java\jre1.6.0\lib\charsets.jar;C:\Program Files\Java\jre1.6.0\classes, java.vendor=Sun Microsystems Inc., file.separator=\, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, sun.io.unicode.encoding=UnicodeLittle, sun.cpu.endian=little, sun.desktop=windows, sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86}
[java] 6139 [main] DEBUG org.hibernate.cfg.Configuration - Preparing to build session factory with filters : {}
[java] 6140 [main] DEBUG org.hibernate.cfg.Configuration - processing extends queue
[java] 6141 [main] DEBUG org.hibernate.cfg.Configuration - processing collection mappings
[java] 6142 [main] DEBUG org.hibernate.cfg.Configuration - processing native query and ResultSetMapping mappings
[java] 6142 [main] DEBUG org.hibernate.cfg.Configuration - processing association property references
[java] 6142 [main] DEBUG org.hibernate.cfg.Configuration - processing foreign key constraints
[java] 6795 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!)
[java] 6796 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Hibernate connection pool size: 20
[java] 6796 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - autocommit mode: false
[java] 6831 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost/events_calendar
[java] 6835 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - connection properties: {user=root, password=root}
[java] 6836 [main] DEBUG org.hibernate.connection.DriverManagerConnectionProvider - total checked-out connections: 0
[java] 6837 [main] DEBUG org.hibernate.connection.DriverManagerConnectionProvider - opening new JDBC connection
[java] 7583 [main] DEBUG org.hibernate.connection.DriverManagerConnectionProvider - created connection to: jdbc:mysql://localhost/events_calendar, Isolation Level: 4
[java] 7585 [main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: MySQL, version: 5.0.67-community-nt
[java] 7585 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.0.4 ( $Date: 2006-10-19 17:47:48 +0200 (Thu, 19 Oct 2006) $, $Revision: 5908 $ )
[java] 7585 [main] DEBUG org.hibernate.connection.DriverManagerConnectionProvider - returning connection to pool, pool size: 1
[java] 7973 [main] INFO org.hibernate.dialect.Dialect - Using dialect: org.hibernate.dialect.MySQLDialect
[java] 8028 [main] INFO org.hibernate.transaction.TransactionFactoryFactory - Using default transaction strategy (direct JDBC transactions)
[java] 8055 [main] INFO org.hibernate.transaction.TransactionManagerLookupFactory - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
[java] 8055 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic flush during beforeCompletion(): disabled
[java] 8061 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic session close at end of transaction: disabled
[java] 8062 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch size: 15
[java] 8062 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch updates for versioned data: disabled
[java] 8072 [main] INFO org.hibernate.cfg.SettingsFactory - Scrollable result sets: enabled
[java] 8073 [main] DEBUG org.hibernate.cfg.SettingsFactory - Wrap result sets: disabled
[java] 8073 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC3 getGeneratedKeys(): enabled
[java] 8074 [main] INFO org.hibernate.cfg.SettingsFactory - Connection release mode: auto
[java] 8085 [main] INFO org.hibernate.cfg.SettingsFactory - Maximum outer join fetch depth: 2
[java] 8086 [main] INFO org.hibernate.cfg.SettingsFactory - Default batch fetch size: 1
[java] 8087 [main] INFO org.hibernate.cfg.SettingsFactory - Generate SQL with comments: disabled
[java] 8087 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL updates by primary key: disabled
[java] 8087 [main] INFO org.hibernate.cfg.SettingsFactory - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
[java] 8132 [main] INFO org.hibernate.hql.ast.ASTQueryTranslatorFactory - Using ASTQueryTranslatorFactory
[java] 8132 [main] INFO org.hibernate.cfg.SettingsFactory - Query language substitutions: {}
[java] 8132 [main] INFO org.hibernate.cfg.SettingsFactory - JPA-QL strict compliance: disabled
[java] 8133 [main] INFO org.hibernate.cfg.SettingsFactory - Second-level cache: enabled
[java] 8133 [main] INFO org.hibernate.cfg.SettingsFactory - Query cache: disabled
[java] 8133 [main] INFO org.hibernate.cfg.SettingsFactory - Cache provider: org.hibernate.cache.NoCacheProvider
[java] 8134 [main] INFO org.hibernate.cfg.SettingsFactory - Optimize cache for minimal puts: disabled
[java] 8134 [main] INFO org.hibernate.cfg.SettingsFactory - Structured second-level cache entries: disabled
[java] 8144 [main] DEBUG org.hibernate.exception.SQLExceptionConverterFactory - Using dialect defined converter
[java] 8231 [main] INFO org.hibernate.cfg.SettingsFactory - Statistics: disabled
[java] 8231 [main] INFO org.hibernate.cfg.SettingsFactory - Deleted entity synthetic identifier rollback: disabled
[java] 8231 [main] INFO org.hibernate.cfg.SettingsFactory - Default entity-mode: pojo
[java] 8232 [main] INFO org.hibernate.cfg.SettingsFactory - Named query checking : enabled
[java] 8515 [main] INFO org.hibernate.impl.SessionFactoryImpl - building session factory
[java] 8526 [main] DEBUG org.hibernate.impl.SessionFactoryImpl - Session factory constructed with filter configurations : {}
[java] 8526 [main] DEBUG org.hibernate.impl.SessionFactoryImpl - instantiating session factory with properties: {java.runtime.name=Java(TM) SE Runtime Environment, hibernate.connection.password=root, sun.boot.library.path=C:\Program Files\Java\jre1.6.0\bin, java.vm.version=1.6.0-oem-b104, ant.library.dir=d:\JBEclipse\plugins\org.apache.ant_1.6.5\lib, hibernate.connection.username=root, java.vm.vendor=Sun Microsystems Inc., java.vendor.url=http://java.sun.com/, path.separator=;, java.vm.name=Java HotSpot(TM) Client VM, file.encoding.pkg=sun.io, user.country=US, sun.java.launcher=SUN_STANDARD, sun.os.patch.level=, java.vm.specification.name=Java Virtual Machine Specification, user.dir=C:\work\calendar, java.runtime.version=1.6.0-oem-b104, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, java.endorsed.dirs=C:\Program Files\Java\jre1.6.0\lib\endorsed, os.arch=x86, java.io.tmpdir=C:\Users\sreevals\AppData\Local\Temp\, line.separator=
[java] , java.vm.specification.vendor=Sun Microsystems Inc., user.variant=, os.name=Windows Vista, ant.home=d:\JBEclipse\plugins\org.apache.ant_1.6.5, sun.jnu.encoding=Cp1252, java.library.path=C:\Windows\system32;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\9.0\DLLShared\;C:\jdk1.5.0_09\bin\;C:\apache-maven-2.0.9\bin\;C:\applications\apache-ant-1.7.1\bin\;C:\applications\mysql\bin;d:\JBEclipse\configuration\org.eclipse.osgi\bundles\114\1\.cp, java.specification.name=Java Platform API Specification, java.class.version=50.0, sun.management.compiler=HotSpot Client Compiler, os.version=6.0, user.home=C:\Users\sreevals, user.timezone=Asia/Calcutta, java.awt.printerjob=sun.awt.windows.WPrinterJob, java.specification.version=1.6, file.encoding=Cp1252, hibernate.connection.driver_class=com.mysql.jdbc.Driver, user.name=sreevals, java.class.path=D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-antlr.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-bcel.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-bsf.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-log4j.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-oro.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-regexp.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-apache-resolver.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-commons-logging.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-commons-net.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-icontract.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jai.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-javamail.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jdepend.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jmf.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-jsch.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-junit.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-launcher.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-netrexx.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-nodeps.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-starteam.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-stylebook.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-swing.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-trax.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-vaj.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-weblogic.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-xalan1.jar;D:\JBEclipse\plugins\org.apache.ant_1.6.5\lib\ant-xslp.jar;D:\JBEclipse\configuration\org.eclipse.osgi\bundles\68\1\.cp\lib\remoteAnt.jar;C:\jdk1.5.0_09\lib\tools.jar;D:\JBEclipse\plugins\org.eclipse.swt.win32.win32.x86_3.1.1.jar, hibernate.bytecode.use_reflection_optimizer=false, java.vm.specification.version=1.0, sun.arch.data.model=32, java.home=C:\Program Files\Java\jre1.6.0, hibernate.connection.url=jdbc:mysql://localhost/events_calendar, hibernate.dialect=org.hibernate.dialect.MySQLDialect, java.specification.vendor=Sun Microsystems Inc., user.language=en, awt.toolkit=sun.awt.windows.WToolkit, java.vm.info=mixed mode, sharing, java.version=1.6.0-oem, java.ext.dirs=C:\Program Files\Java\jre1.6.0\lib\ext;C:\Windows\Sun\Java\lib\ext, sun.boot.class.path=C:\Program Files\Java\jre1.6.0\lib\resources.jar;C:\Program Files\Java\jre1.6.0\lib\rt.jar;C:\Program Files\Java\jre1.6.0\lib\sunrsasign.jar;C:\Program Files\Java\jre1.6.0\lib\jsse.jar;C:\Program Files\Java\jre1.6.0\lib\jce.jar;C:\Program Files\Java\jre1.6.0\lib\charsets.jar;C:\Program Files\Java\jre1.6.0\classes, java.vendor=Sun Microsystems Inc., file.separator=\, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, sun.cpu.endian=little, sun.io.unicode.encoding=UnicodeLittle, sun.desktop=windows, sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86}
[java] 10342 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Static SQL for entity: com.manning.hq.ch02.Event
[java] 10343 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Version select: select uid from events where uid =?
[java] 10343 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Snapshot select: select event_.uid, event_.name as name0_ from events event_ where event_.uid=?
[java] 10344 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Insert 0: insert into events (name, uid) values (?, ?)
[java] 10344 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Update 0: update events set name=? where uid=?
[java] 10344 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Delete 0: delete from events where uid=?
[java] 10344 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Identity insert: insert into events (name) values (?)
[java] 10509 [main] DEBUG org.hibernate.loader.entity.EntityLoader - Static select for entity com.manning.hq.ch02.Event: select event0_.uid as uid0_0_, event0_.name as name0_0_ from events event0_ where event0_.uid=?
[java] 10510 [main] DEBUG org.hibernate.loader.entity.EntityLoader - Static select for entity com.manning.hq.ch02.Event: select event0_.uid as uid0_0_, event0_.name as name0_0_ from events event0_ where event0_.uid=?
[java] 10510 [main] DEBUG org.hibernate.loader.entity.EntityLoader - Static select for entity com.manning.hq.ch02.Event: select event0_.uid as uid0_0_, event0_.name as name0_0_ from events event0_ where event0_.uid=? for update
[java] 10510 [main] DEBUG org.hibernate.loader.entity.EntityLoader - Static select for entity com.manning.hq.ch02.Event: select event0_.uid as uid0_0_, event0_.name as name0_0_ from events event0_ where event0_.uid=? for update
[java] 10511 [main] DEBUG org.hibernate.loader.entity.EntityLoader - Static select for entity com.manning.hq.ch02.Event: select event0_.uid as uid0_0_, event0_.name as name0_0_ from events event0_ where event0_.uid=? for update
[java] 10637 [main] DEBUG org.hibernate.loader.entity.EntityLoader - Static select for action ACTION_MERGE on entity com.manning.hq.ch02.Event: select event0_.uid as uid0_0_, event0_.name as name0_0_ from events event0_ where event0_.uid=?
[java] 10637 [main] DEBUG org.hibernate.loader.entity.EntityLoader - Static select for action ACTION_REFRESH on entity com.manning.hq.ch02.Event: select event0_.uid as uid0_0_, event0_.name as name0_0_ from events event0_ where event0_.uid=?
[java] 10650 [main] DEBUG org.hibernate.impl.SessionFactoryObjectFactory - initializing class SessionFactoryObjectFactory
[java] 10671 [main] DEBUG org.hibernate.impl.SessionFactoryObjectFactory - registered: fb6c03851cbd97ff011cbd98087b0000 (unnamed)
[java] 10672 [main] INFO org.hibernate.impl.SessionFactoryObjectFactory - Not binding factory to JNDI, no JNDI name configured
[java] 10672 [main] DEBUG org.hibernate.impl.SessionFactoryImpl - instantiated session factory
[java] 10673 [main] DEBUG org.hibernate.impl.SessionFactoryImpl - Checking 0 named HQL queries
[java] 10673 [main] DEBUG org.hibernate.impl.SessionFactoryImpl - Checking 0 named SQL queries
[java] 11026 [main] DEBUG org.hibernate.impl.SessionImpl - opened session at timestamp: 12229515695
[java] 11055 [main] DEBUG org.hibernate.event.def.DefaultSaveOrUpdateEventListener - saving transient instance
[java] 11066 [main] DEBUG org.hibernate.event.def.AbstractSaveEventListener - saving [com.manning.hq.ch02.Event#<null>]
[java] 11066 [main] DEBUG org.hibernate.event.def.AbstractSaveEventListener - executing insertions
[java] 11171 [main] DEBUG org.hibernate.event.def.AbstractSaveEventListener - executing identity-insert immediately
[java] 11171 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Inserting entity: com.manning.hq.ch02.Event (native id)
[java] 11180 [main] DEBUG org.hibernate.jdbc.AbstractBatcher - about to open PreparedStatement (open PreparedStatements: 0, globally: 0)
[java] 11181 [main] DEBUG org.hibernate.jdbc.ConnectionManager - opening JDBC connection
[java] 11181 [main] DEBUG org.hibernate.connection.DriverManagerConnectionProvider - total checked-out connections: 0
[java] 11181 [main] DEBUG org.hibernate.connection.DriverManagerConnectionProvider - using pooled JDBC connection, pool size: 0
[java] 11183 [main] DEBUG org.hibernate.SQL - insert into events (name) values (?)
[java] 11183 [main] DEBUG org.hibernate.jdbc.AbstractBatcher - preparing statement
[java] 11238 [main] DEBUG org.hibernate.persister.entity.AbstractEntityPersister - Dehydrating entity: [com.manning.hq.ch02.Event#<null>]
[java] 11238 [main] DEBUG org.hibernate.type.StringType - binding 'ABCD' to parameter: 1
[java] 11240 [main] DEBUG org.hibernate.id.IdentifierGeneratorFactory - Natively generated identity: 14
[java] 11241 [main] DEBUG org.hibernate.jdbc.AbstractBatcher - about to close PreparedStatement (open PreparedStatements: 1, globally: 1)
[java] 11241 [main] DEBUG org.hibernate.jdbc.AbstractBatcher - closing statement
[java] 11269 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - flushing session
[java] 11279 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - processing flush-time cascades
[java] 11291 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - dirty checking collections
[java] 11291 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - Flushing entities and processing referenced collections
[java] 11317 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - Processing unreferenced collections
[java] 11317 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - Scheduling collection removes/(re)creates/updates
[java] 11319 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - Flushed: 0 insertions, 0 updates, 0 deletions to 1 objects
[java] 11319 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - Flushed: 0 (re)creations, 0 updates, 0 removals to 0 collections
[java] 11332 [main] DEBUG org.hibernate.pretty.Printer - listing entities:
[java] 11334 [main] DEBUG org.hibernate.pretty.Printer - com.manning.hq.ch02.Event{id=14, name=ABCD}
[java] 11334 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - executing flush
[java] 11334 [main] DEBUG org.hibernate.jdbc.ConnectionManager - registering flush begin
[java] 11335 [main] DEBUG org.hibernate.jdbc.ConnectionManager - registering flush end
[java] 11335 [main] DEBUG org.hibernate.event.def.AbstractFlushingEventListener - post flush
[java] 11335 [main] DEBUG org.hibernate.impl.SessionImpl - closing session
[java] 11335 [main] DEBUG org.hibernate.jdbc.ConnectionManager - performing cleanup
[java] 11336 [main] DEBUG org.hibernate.jdbc.ConnectionManager - releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)]
[java] 11347 [main] DEBUG org.hibernate.connection.DriverManagerConnectionProvider - returning connection to pool, pool size: 1
[java] 11348 [main] DEBUG org.hibernate.jdbc.JDBCContext - after transaction completion
[java] 11348 [main] DEBUG org.hibernate.jdbc.ConnectionManager - aggressively releasing JDBC connection
[java] 11348 [main] DEBUG org.hibernate.impl.SessionImpl - after transaction completion
[echo] If you see this, it runs
BUILD SUCCESSFUL

--------------------------------

Please help, as its very critical for me to understand hibernate. thanks in advance.