Hibernate JPA With DB2

Hibernate JPA With DB2 explains step by step details of setting / configuring Java Persistence JPA With Hibernate And DB2

How To Configure Hibernate JPA With DB2?

Java Persistence API, is a standard interface which wraps different ORM tools such as  Hibernate, EclipseLink, OpenJPA etc.

ie; you can able to change Hibernate implementation to EclipseLink implementation without changing the code base.

On this standalone JPA Example, we are using Java Persistence JPA With DB2

If you want to configure Hibernate JPA With Oracle, you can follow JPA Tutorial With Hibernate

Hibernate is popular open source ORM (Object Relation Mapping) tool for Java platform, for mapping an entity to a traditional relational like Oracle, MySQL, SQL Server, PostgreSQL, DB2 etc

I am going to re-use JPA Tutorial With Hibernate

Note

You need to remove classes12.jar (Oracle driver) and add db2jcc4.jar (DB2 driver) into classpath

You can check below different database with Hibernate and EclipseLink examples

Database Driver class Jar name Examples
MySQL com.mysql.jdbc.Driver mysql-connector-java-5.1.25-bin.jar (exact name depends on version)
http://www.mysql.com/downloads/connector/j/
EclipseLink JPA With MySql
Hibernate JPA With MySql
HSQLDB org.hsqldb.jdbcDriver hsqldb.jar
http://hsqldb.sourceforge.net
Hibernate JPA With HSQL
EclipseLink JPA With HSQL
Sybase com.sybase.jdbc3.jdbc.SybDriver jconnect.jar
http://www.sybase.com/products/allproductsa-z/softwaredeveloperkit/jconnect
Hibernate JPA With Sybase
EclipseLink JPA With Sybase
Apache Derby org.apache.derby.jdbc.EmbeddedDriver derby.jar
http://db.apache.org/derby/
Hibernate JPA With Derby
EclipseLink JPA With Derby
IBM DB2 com.ibm.db2.jcc.DB2Driver db2jcc4.jar
http://www-01.ibm.com/software/data/db2/linux-unix-windows/download.html
Hibernate JPA With DB2
EclipseLink JPA With DB2
PostgreSQL org.postgresql.Driver postgresql-8.4-701.jdbc4.jar (exact name depends on PostgreSQL version)
http://jdbc.postgresql.org
Hibernate JPA With PostgreSQL
EclipseLink JPA With PostgreSQL
SQL Server (Microsoft driver) com.microsoft.sqlserver.jdbc.SQLServerDriver sqljdbc4.jar
http://msdn.microsoft.com/en-gb/data/aa937724%28en-us%29.aspx
Hibernate JPA With SQL Server
EclipseLink JPA With SQL Server
Informix com.informix.jdbc.IfxDriver ifxjdbc.jar
http://www14.software.ibm.com/webapp/download/search.jsp?go=y&rs=ifxjdbc
Hibernate JPA With Informix
EclipseLink JPA With Informix
H2 org.h2.Driver h2.jar
http://www.h2database.com/h2-2014-10-17.zip
Hibernate JPA With H2
EclipseLink JPA With H2

Modify persistence.xml

persistence.xml file must be under src/META-INF (Please check below screenshot(project structure)

Here we are using hibernate.dialect as "org.hibernate.dialect.DB2Dialect"

<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
  version="2.0" xmlns="http://java.sun.com/xml/ns/persistence">
  <persistence-unit name="test" transaction-type="RESOURCE_LOCAL">
    <class>com.test.jpa.Student</class>
    <properties>
      <property name="javax.persistence.jdbc.driver" value="com.ibm.db2.jcc.DB2Driver" />
      <property name="javax.persistence.jdbc.url"    value="jdbc:db2://<host>:<port50000>/<dbname>" />
      <property name="javax.persistence.jdbc.user" value="username" />
      <property name="javax.persistence.jdbc.password" value="password" />
      <property name="hibernate.dialect" value="org.hibernate.dialect.DB2Dialect"/>
      <property name="show_sql" value="true"/>
      <property name="hibernate.temp.use_jdbc_metadata_defaults" value="false"/>
    </properties>
  </persistence-unit>
</persistence>

Package Structure

Now package structure looks like following

Hibernate JPA With DB2 Structure

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