diff --git a/conf/persistence.xml b/conf/persistence.xml
index e566a9326..96af1d777 100644
--- a/conf/persistence.xml
+++ b/conf/persistence.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
+<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
+    
     <persistence-unit name="" transaction-type="RESOURCE_LOCAL">
         <shared-cache-mode>ALL</shared-cache-mode>
         <properties>
@@ -9,4 +11,27 @@
             <property name="javax.persistence.jdbc.password" value="1234"/>
         </properties>
     </persistence-unit>
+    
+    <!--
+    <persistence-unit name="user.read" transaction-type="RESOURCE_LOCAL">
+        <shared-cache-mode>ALL</shared-cache-mode>
+        <properties>
+            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/user?autoReconnect=true&amp;characterEncoding=utf8"/>
+            <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
+            <property name="javax.persistence.jdbc.user" value="root"/>
+            <property name="javax.persistence.jdbc.password" value="1234"/>
+        </properties>
+    </persistence-unit>
+    
+    <persistence-unit name="user.write" transaction-type="RESOURCE_LOCAL">
+        <shared-cache-mode>ALL</shared-cache-mode>
+        <properties>
+            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/user?autoReconnect=true&amp;characterEncoding=utf8"/>
+            <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
+            <property name="javax.persistence.jdbc.user" value="root"/>
+            <property name="javax.persistence.jdbc.password" value="1234"/>
+        </properties>
+    </persistence-unit>
+    -->
+    
 </persistence>