persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/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">
  <persistence-unit name="StockPU" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jar-file>lib/stockimpl.jar</jar-file>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="javax.persistence.jdbc.password" value="stock"/>
      <property name="javax.persistence.jdbc.user" value="stock"/>
      <property name="eclipselink.persistence-context.reference-mode" value="WEAK"/>
      <property name="eclipselink.cache.shared.default" value="false"/>
      <property name="eclipselink.connection-pool.min" value="2"/>
      <property name="eclipselink.connection-pool.max" value="4"/>
      <property name="javax.persistence.jdbc.driver" value="oracle.jdbc.OracleDriver"/>
      <property name="javax.persistence.jdbc.url" value="jdbc:oracle:thin:@localhost:1521:XE"/>
      <property name="eclipselink.jdbc.batch-writing" value="JDBC" />  
      <property name="eclipselink.jdbc.batch-writing.size" value="10000" />  
      <property name="eclipselink.jdbc.cache-statements" value="true" />  
      </properties>
  </persistence-unit>
</persistence>