diff --git a/src/main/java/com/codefutures/tpcc/NewOrder.java b/src/main/java/com/codefutures/tpcc/NewOrder.java
index ce82be0..26a4072 100644
--- a/src/main/java/com/codefutures/tpcc/NewOrder.java
+++ b/src/main/java/com/codefutures/tpcc/NewOrder.java
@@ -195,6 +195,8 @@ public int neword(int t_num,           /* thread number (not used) */
                     logger.error("SELECT c_discount, c_last, c_credit FROM customer WHERE c_w_id = " + w_id + " AND c_d_id = " + d_id + " AND c_id = " + c_id, e);
                     throw new Exception("NewOrder (join = false) select transaction error", e);
                 }
+            } else {
+                logger.error("joins is empty or null");
             }
             //Get prepared statement
             //"SELECT d_next_o_id, d_tax FROM district WHERE d_id = ? AND d_w_id = ? FOR UPDATE"
diff --git a/src/main/java/com/codefutures/tpcc/Tpcc.java b/src/main/java/com/codefutures/tpcc/Tpcc.java
index 5c9bfe8..4654ffe 100644
--- a/src/main/java/com/codefutures/tpcc/Tpcc.java
+++ b/src/main/java/com/codefutures/tpcc/Tpcc.java
@@ -41,7 +41,7 @@ public class Tpcc implements TpccConstants {
     private String jdbcUrl;
     private String dbUser;
     private String dbPassword;
-    private Boolean joins = true;
+    private static Boolean joins;
 
 
     private int numWare;
@@ -162,7 +162,7 @@ private int runBenchmark(boolean overridePropertiesFile, String[] argv) {
                     System.out.println("-j [java driver]");
                     System.out.println("-l [jdbc url]");
                     System.out.println("-h [jdbc fetch size]");
-                    System.out.println("-J [Joins (true|false) default=true]");
+                    System.out.println("-J [joins (true|false)]");
                     System.exit(-1);
 
                 }
diff --git a/src/main/java/com/codefutures/tpcc/TpccThread.java b/src/main/java/com/codefutures/tpcc/TpccThread.java
index 3590f11..f9f7707 100644
--- a/src/main/java/com/codefutures/tpcc/TpccThread.java
+++ b/src/main/java/com/codefutures/tpcc/TpccThread.java
@@ -140,6 +140,7 @@ private Connection connectToDatabase() {
             prop.put("user", db_user);
             prop.put("password", db_password);
 
+
             conn = DriverManager.getConnection(jdbcUrl, prop);
             conn.setTransactionIsolation(Connection.TRANSACTION_REPEATABLE_READ);
             conn.setAutoCommit(false);