Java web service missing hibernate.dialect

I am trying to create web service with creation to oracle database. As a server I use Wildfly so I initialized JNDI connection using Administrative console in browser.

Standalone.xml

    {
...
                    <datasource jta="false" jndi-name="java:/jdbc/ora" pool-name="ora" enabled="true" use-ccm="false">
                        <connection-url>jdbc:oracle:thin:@localhost:1522:maindatabase</connection-url>
                        <driver-class>oracle.jdbc.OracleDriver</driver-class>
                        <driver>ora</driver>
                        <security>
                            <user-name>C##Edgar</user-name>
                            <password>2301910</password>
                        </security>
                        <validation>
                            <validate-on-match>false</validate-on-match>
                            <background-validation>false</background-validation>
                        </validation>
                        <statement>
                            <share-prepared-statements>false</share-prepared-statements>
                        </statement>
                    </datasource>
...
    }

But after creation the JPA project and adding <jta-data-source> in persistance.xml it throws me exetion when I try to create .ear file and deploy project.

Persistance.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://ift.tt/1cKbVbQ" xmlns:xsi="http://ift.tt/ra1lAU" xsi:schemaLocation="http://ift.tt/1cKbVbQ http://ift.tt/1kMb4sd">
    <persistence-unit name="Model">
        <jta-data-source>java:/jdbc/ora</jta-data-source>
    </persistence-unit>
</persistence>

Exeption is:

JBAS014777:   Services which failed to start:      service jboss.persistenceunit."App1.ear#Model"
      service jboss.persistenceunit."App1.ear#Model": org.jboss.msc.service.StartException in service jboss.persistenceunit."App1.ear#Model": org.hibernate.HibernateException: Unable to determine Dial
ect to use [name=Oracle, majorVersion=12]; user must register resolver or explicitly set 'hibernate.dialect'

Maybe someone an tell what I missed or done wrong?