Adding eclipselink.target-server to the persistence.xml file
The persistence.xml file requires the inclusion of the eclipselink.target-server property to fully enable transactional behavior. The persistence.xml file located at src/main/resources/META-INF should look like the following:
<?xml version="1.0" encoding="UTF-8"?> <persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> <persistence-unit name="tttPU" transaction-type="JTA"> <provider> org.eclipse.persistence.jpa.PersistenceProvider </provider> <jta-data-source>jdbc/tasktimetracker</jta-data-source> ...
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