jpa-performance/src/META-INF/order-orm.xml

<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings version="2.1"
    xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/orm"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

    <named-query name="findCustomByName">
        <query>Select c from Customer c where c.name = :name</query>
        <hint name="eclipselink.query-results-cache" value="true"/>
    </named-query>
    <entity class="model.Order">
        <table-generator name="ORD_SEQ" allocation-size="500"/>
    </entity>
    <entity class="model.Customer">
            <table-generator name="CUST_SEQ" allocation-size="500"/>
    </entity>

</entity-mappings>