diff --git a/src/main/java/com/alibaba/druid/filter/logging/LogFilter.java b/src/main/java/com/alibaba/druid/filter/logging/LogFilter.java
index 684308423c..14ad2bd491 100644
--- a/src/main/java/com/alibaba/druid/filter/logging/LogFilter.java
+++ b/src/main/java/com/alibaba/druid/filter/logging/LogFilter.java
@@ -382,8 +382,8 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
     protected void statementExecuteAfter(StatementProxy statement, String sql, boolean firstResult) {
         if (statementExecuteAfterLogEnable && isStatementLogEnabled()) {
             statement.setLastExecuteTimeNano();
-            long nanos = statement.getLastExecuteTimeNano();
-            long millis = nanos / (1000 * 1000);
+            double nanos = statement.getLastExecuteTimeNano();
+            double millis = nanos / (1000 * 1000);
 
             statementLog("{conn-" + statement.getConnectionProxy().getId() + ", " + stmtId(statement) + "} executed. "
                          + sql + " (" + millis + " milliseconds)");
@@ -399,8 +399,8 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
     protected void statementExecuteBatchAfter(StatementProxy statement, int[] result) {
         if (statementExecuteBatchAfterLogEnable && isStatementLogEnabled()) {
             statement.setLastExecuteTimeNano();
-            long nanos = statement.getLastExecuteTimeNano();
-            long millis = nanos / (1000 * 1000);
+            double nanos = statement.getLastExecuteTimeNano();
+            double millis = nanos / (1000 * 1000);
 
             String sql;
             if (statement instanceof PreparedStatementProxy) {
@@ -426,8 +426,8 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
     protected void statementExecuteQueryAfter(StatementProxy statement, String sql, ResultSetProxy resultSet) {
         if (statementExecuteQueryAfterLogEnable && isStatementLogEnabled()) {
             statement.setLastExecuteTimeNano();
-            long nanos = statement.getLastExecuteTimeNano();
-            long millis = nanos / (1000 * 1000);
+            double nanos = statement.getLastExecuteTimeNano();
+            double millis = nanos / (1000 * 1000);
 
             statementLog("{conn-" + statement.getConnectionProxy().getId() + ", " + stmtId(statement) + ", rs-"
                          + resultSet.getId() + "} query executed. " + sql + " (" + millis + " milliseconds)");
@@ -446,8 +446,8 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
     protected void statementExecuteUpdateAfter(StatementProxy statement, String sql, int updateCount) {
         if (statementExecuteUpdateAfterLogEnable && isStatementLogEnabled()) {
             statement.setLastExecuteTimeNano();
-            long nanos = statement.getLastExecuteTimeNano();
-            long millis = nanos / (1000 * 1000);
+            double nanos = statement.getLastExecuteTimeNano();
+            double millis = nanos / (1000 * 1000);
 
             statementLog("{conn-" + statement.getConnectionProxy().getId() + ", " + stmtId(statement)
                          + "} update executed. effort " + updateCount + ". " + sql + " (" + millis + " milliseconds)");
diff --git a/src/main/java/com/alibaba/druid/proxy/jdbc/StatementProxyImpl.java b/src/main/java/com/alibaba/druid/proxy/jdbc/StatementProxyImpl.java
index d18ec0c8e1..d97c2d8aa6 100644
--- a/src/main/java/com/alibaba/druid/proxy/jdbc/StatementProxyImpl.java
+++ b/src/main/java/com/alibaba/druid/proxy/jdbc/StatementProxyImpl.java
@@ -109,7 +109,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         updateCount = null;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.Execute;
-
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         firstResultSet = createChain().statement_execute(this, sql);
         return firstResultSet;
     }
@@ -119,6 +121,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         updateCount = null;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.Execute;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         firstResultSet = createChain().statement_execute(this, sql, autoGeneratedKeys);
         return firstResultSet;
     }
@@ -128,6 +133,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         updateCount = null;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.Execute;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         firstResultSet = createChain().statement_execute(this, sql, columnIndexes);
         return firstResultSet;
     }
@@ -137,6 +145,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         updateCount = null;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.Execute;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         firstResultSet = createChain().statement_execute(this, sql, columnNames);
         return firstResultSet;
     }
@@ -145,6 +156,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
     public int[] executeBatch() throws SQLException {
         firstResultSet = false;
         lastExecuteType = StatementExecuteType.ExecuteBatch;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         int[] updateCounts = createChain().statement_executeBatch(this);
 
         if (updateCounts != null && updateCounts.length == 1) {
@@ -160,6 +174,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         updateCount = null;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.ExecuteQuery;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         return createChain().statement_executeQuery(this, sql);
     }
 
@@ -168,6 +185,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         firstResultSet = false;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.ExecuteUpdate;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         updateCount = createChain().statement_executeUpdate(this, sql);
         return updateCount;
     }
@@ -177,6 +197,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         firstResultSet = false;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.ExecuteUpdate;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         updateCount = createChain().statement_executeUpdate(this, sql, autoGeneratedKeys);
         return updateCount;
     }
@@ -186,6 +209,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         firstResultSet = false;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.ExecuteUpdate;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         updateCount = createChain().statement_executeUpdate(this, sql, columnIndexes);
         return updateCount;
     }
@@ -195,6 +221,9 @@ public class StatementProxyImpl extends WrapperProxyImpl implements StatementPro
         firstResultSet = false;
         lastExecuteSql = sql;
         lastExecuteType = StatementExecuteType.ExecuteUpdate;
+        lastExecuteStartNano = -1L;
+        lastExecuteTimeNano = -1L;
+        
         updateCount = createChain().statement_executeUpdate(this, sql, columnNames);
         return updateCount;
     }
diff --git a/src/test/java/com/alibaba/druid/bvt/filter/log/LogFilterTest.java b/src/test/java/com/alibaba/druid/bvt/filter/log/LogFilterTest.java
new file mode 100644
index 0000000000..97b6daed0b
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/filter/log/LogFilterTest.java
@@ -0,0 +1,40 @@
+package com.alibaba.druid.bvt.filter.log;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+import junit.framework.TestCase;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import com.alibaba.druid.util.JdbcUtils;
+
+public class LogFilterTest extends TestCase {
+
+    private DruidDataSource dataSource;
+
+    protected void setUp() throws Exception {
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:derby:classpath:petstore-db");
+        dataSource.setFilters("log4j");
+    }
+    
+    public void test_select() throws Exception {
+        Connection conn = dataSource.getConnection();
+        
+        Statement stmt = conn.createStatement();
+        
+        for (int i = 0; i < 10; ++i) {
+            ResultSet rs = stmt.executeQuery("SELECT * FROM ITEM WHERE LISTPRICE > 10");
+            rs.close();
+        }
+        
+        stmt.close();
+        
+        conn.close();
+    }
+
+    protected void tearDown() throws Exception {
+        JdbcUtils.close(dataSource);
+    }
+}