qq

java/samples/rest/dev_j200_2/target/classes/META-INF/persistence.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<persistence xmlns="https://jakarta.ee/xml/ns/persistence"
+             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:schemaLocation="https://jakarta.ee/xml/ns/persistence https://jakarta.ee/xml/ns/persistence/persistence_3_0.xsd"
+             version="3.0">
+    <persistence-unit name="default">
+        <jta-data-source>java:/test_db</jta-data-source>
+    </persistence-unit>
+</persistence>