diff --git a/src/main/java/com/alibaba/druid/pool/ConnectionHolder.java b/src/main/java/com/alibaba/druid/pool/ConnectionHolder.java
index c4a5444059..42320e32bc 100644
--- a/src/main/java/com/alibaba/druid/pool/ConnectionHolder.java
+++ b/src/main/java/com/alibaba/druid/pool/ConnectionHolder.java
@@ -16,6 +16,7 @@
 package com.alibaba.druid.pool;
 
 import java.sql.Connection;
+import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.Date;
@@ -40,16 +41,24 @@ public final class ConnectionHolder {
     private long                                lastActiveTimeMillis;
     private long                                useCount                 = 0;
 
-    private PreparedStatementPool         statementPool;
+    private PreparedStatementPool               statementPool;
 
     private final List<Statement>               statementTrace           = new ArrayList<Statement>();
 
-    public ConnectionHolder(DruidAbstractDataSource dataSource, Connection conn){
+    private boolean                             defaultReadOnly;
+    private int                                 defaultHoldability;
+    private int                                 defaultTransactionIsolation;
+
+    public ConnectionHolder(DruidAbstractDataSource dataSource, Connection conn) throws SQLException{
         this.dataSource = dataSource;
         this.conn = conn;
         this.connecttimeMillis = System.currentTimeMillis();
         this.lastActiveTimeMillis = connecttimeMillis;
 
+        this.defaultReadOnly = conn.isReadOnly();
+        this.defaultHoldability = conn.getHoldability();
+        this.defaultTransactionIsolation = conn.getTransactionIsolation();
+
         statementPool = null;
     }
 
@@ -108,7 +117,11 @@ public final class ConnectionHolder {
         useCount++;
     }
 
-    public void reset() {
+    public void reset() throws SQLException {
+        conn.setReadOnly(defaultReadOnly);
+        conn.setHoldability(defaultHoldability);
+        conn.setTransactionIsolation(defaultTransactionIsolation);
+        
         connectionEventListeners.clear();
         statementEventListeners.clear();
 
@@ -118,7 +131,7 @@ public final class ConnectionHolder {
         }
         statementTrace.clear();
     }
-    
+
     public String toString() {
         StringBuilder buf = new StringBuilder();
 
@@ -126,24 +139,24 @@ public final class ConnectionHolder {
         buf.append(System.identityHashCode(conn));
         buf.append(", ConnectTime:\"");
         buf.append(JdbcUtils.toString(new Date(this.connecttimeMillis)));
-        
+
         buf.append("\", UseCount:");
         buf.append(useCount);
-        
+
         if (lastActiveTimeMillis > 0) {
             buf.append(", LastActiveTime:\"");
             buf.append(JdbcUtils.toString(new Date(this.lastActiveTimeMillis)));
             buf.append("\"");
         }
-        
+
         PreparedStatementPool statmentPool = this.getStatementPool();
         if (statmentPool != null && statmentPool.getMap().size() > 0) {
             buf.append("\", CachedStatementCount:");
             buf.append(this.getStatementPool().getMap().size());
         }
-        
+
         buf.append("}");
-        
+
         return buf.toString();
     }
 
diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 7d4a8be279..0f953113f0 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -865,6 +865,9 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
 
                     notEmpty.signal();
                     notEmptySignalCount++;
+                } catch (SQLException ex) {
+                    LOG.error("create connection holder error", ex);
+                    break;
                 } finally {
                     lock.unlock();
                 }
diff --git a/src/main/java/com/alibaba/druid/pool/PoolableConnection.java b/src/main/java/com/alibaba/druid/pool/PoolableConnection.java
index 346274c57a..3461b1855d 100644
--- a/src/main/java/com/alibaba/druid/pool/PoolableConnection.java
+++ b/src/main/java/com/alibaba/druid/pool/PoolableConnection.java
@@ -57,7 +57,7 @@ public class PoolableConnection implements PooledConnection, Connection {
     protected ConnectionHolder holder;
     protected TransactionInfo  transactionInfo;
 
-    public PoolableConnection(ConnectionHolder holder){
+    public PoolableConnection(ConnectionHolder holder) {
         this.conn = holder.getConnection();
         this.holder = holder;
     }
@@ -188,7 +188,7 @@ public class PoolableConnection implements PooledConnection, Connection {
         if (stmtHolder == null) {
             try {
                 stmtHolder = new PreparedStatementHolder(key, conn.prepareStatement(sql, resultSetType,
-                                                                                          resultSetConcurrency));
+                                                                                    resultSetConcurrency));
                 holder.getDataSource().incrementPreparedStatementCount();
                 holder.getStatementPool().put(stmtHolder);
             } catch (SQLException ex) {
@@ -389,8 +389,8 @@ public class PoolableConnection implements PooledConnection, Connection {
         if (stmtHolder == null) {
             try {
                 stmtHolder = new PreparedStatementHolder(key, conn.prepareCall(sql, resultSetType,
-                                                                                     resultSetConcurrency,
-                                                                                     resultSetHoldability));
+                                                                               resultSetConcurrency,
+                                                                               resultSetHoldability));
                 holder.getDataSource().incrementPreparedStatementCount();
                 holder.getStatementPool().put(stmtHolder);
             } catch (SQLException ex) {
@@ -422,8 +422,8 @@ public class PoolableConnection implements PooledConnection, Connection {
 
         if (stmtHolder == null) {
             try {
-                stmtHolder = new PreparedStatementHolder(key, conn.prepareCall(sql, resultSetType,
-                                                                                     resultSetConcurrency));
+                stmtHolder = new PreparedStatementHolder(key,
+                                                         conn.prepareCall(sql, resultSetType, resultSetConcurrency));
                 holder.getDataSource().incrementPreparedStatementCount();
                 holder.getStatementPool().put(stmtHolder);
             } catch (SQLException ex) {
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/TestDefault.java b/src/test/java/com/alibaba/druid/bvt/pool/TestDefault.java
new file mode 100644
index 0000000000..3ae3e76e7f
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/pool/TestDefault.java
@@ -0,0 +1,61 @@
+package com.alibaba.druid.bvt.pool;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+
+import junit.framework.Assert;
+import junit.framework.TestCase;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import com.alibaba.druid.stat.DruidDataSourceStatManager;
+
+public class TestDefault extends TestCase {
+
+    protected void setUp() throws Exception {
+        Assert.assertEquals(0, DruidDataSourceStatManager.getInstance().getDataSourceList().size());
+    }
+
+    protected void tearDown() throws Exception {
+        Assert.assertEquals(0, DruidDataSourceStatManager.getInstance().getDataSourceList().size());
+    }
+
+    public void test_close() throws Exception {
+        DruidDataSource dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:mock:xxx");
+
+        String sql = "SELECT 1";
+        {
+            Connection conn = dataSource.getConnection();
+            PreparedStatement stmt = conn.prepareStatement(sql);
+            ResultSet rs = stmt.executeQuery();
+            rs.next();
+
+            Assert.assertEquals(0, conn.getHoldability());
+            Assert.assertEquals(false, conn.isReadOnly());
+            Assert.assertEquals(0, conn.getTransactionIsolation());
+
+            conn.setHoldability(ResultSet.HOLD_CURSORS_OVER_COMMIT);
+            conn.setReadOnly(false);
+            conn.setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
+
+            conn.close();
+
+            Assert.assertEquals(true, stmt.isClosed());
+            Assert.assertEquals(true, rs.isClosed());
+
+            rs.close();
+            stmt.close();
+        }
+
+        Connection conn = dataSource.getConnection();
+        
+        Assert.assertEquals(0, conn.getHoldability());
+        Assert.assertEquals(false, conn.isReadOnly());
+        Assert.assertEquals(0, conn.getTransactionIsolation());
+
+        conn.close();
+
+        dataSource.close();
+    }
+}