diff --git a/jdbc/src/main/java/org/apache/zeppelin/jdbc/JDBCInterpreter.java b/jdbc/src/main/java/org/apache/zeppelin/jdbc/JDBCInterpreter.java
index bc473eaf2f4..0655f3a65a3 100644
--- a/jdbc/src/main/java/org/apache/zeppelin/jdbc/JDBCInterpreter.java
+++ b/jdbc/src/main/java/org/apache/zeppelin/jdbc/JDBCInterpreter.java
@@ -210,7 +210,7 @@ public Connection getConnection(String propertyKey, String user)
       }
     }
     if (null == connection) {
-      final Properties properties = propertiesMap.get(propertyKey);
+      final Properties properties = (Properties) propertiesMap.get(propertyKey).clone();
       logger.info(properties.getProperty(DRIVER_KEY));
       Class.forName(properties.getProperty(DRIVER_KEY));
       final String url = properties.getProperty(URL_KEY);