JBoss EPA 6.1 : javax.persistence.PersistenceException PersistenceProvider in org.apache.openjpa.persistence.PersistenceProviderImpl not found

This is an issue I was having few weeks back and solved by creating a module inside the JBoss EPA. The issue came because of missing a class which should be available inside the EPA, and raised the above exception during the deployment. I’m still hesitating about the root cause, whether this requirement came with a Spring dependency I had or due to MS SQL Server driver I used. Somehow I managed to solve this issue by creating an OpenJPA module inside the JBOSS_HOME>\modules\org\apache\openjpa directory.

First of all we need to download the OpenJPA from this link. Then extract the content to above mentioned directory and the create the module.xml file as follows.

<?xml version="1.0" encoding="UTF-8"?>

<module xmlns="urn:jboss:module:1.1" name="org.jboss.as.jpa.openjpa">

    <properties>

        <property name="jboss.api" value="private"/>

    </properties>

    <resources>

        <resource-root path="jboss-as-jpa-openjpa-7.1.1.Final.jar"/>

    </resources>

    <dependencies>

        <module name="javax.annotation.api"/>

        <module name="javax.persistence.api"/>

        <module name="javax.transaction.api"/>

        <module name="org.jboss.as.jpa.spi"/>

        <module name="org.jboss.logging"/>

        <module name="org.jboss.jandex"/>

        <module name="org.apache.openjpa" optional="true"/>

    </dependencies>

</module>