[FIX] JPA: add DBCP2 to reuse connections
diff --git a/backends-common/jpa/pom.xml b/backends-common/jpa/pom.xml
index 4cd9ca9..eeff5d7 100644
--- a/backends-common/jpa/pom.xml
+++ b/backends-common/jpa/pom.xml
@@ -39,6 +39,11 @@
             <artifactId>guava</artifactId>
         </dependency>
         <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-dbcp2</artifactId>
+            <version>2.9.0</version>
+        </dependency>
+        <dependency>
             <groupId>org.apache.derby</groupId>
             <artifactId>derby</artifactId>
             <scope>test</scope>