diff --git a/config/config.php b/config/config.php
index 878372324b..28f04b10ed 100644
--- a/config/config.php
+++ b/config/config.php
@@ -48,11 +48,12 @@ $config->file->dangers = 'php,jsp,py,rb,asp,'; // Dangerous files.
 $config->file->maxSize = 1024 * 1024;          // Max size.
 
 /* Master database settings. */
-$config->db->persistant = false;     // Pconnect or not.
-$config->db->driver     = 'mysql';   // Must be MySQL. Don't support other database server yet.
-$config->db->encoding   = 'UTF8';    // Encoding of database.
-$config->db->strictMode = false;     // Turn off the strict mode of MySQL.
-$config->db->checkCentOS= true;      // Whether check is centos or not, thus to fix the error of pdo in centos.
+$config->db->persistant     = false;     // Pconnect or not.
+$config->db->driver         = 'mysql';   // Must be MySQL. Don't support other database server yet.
+$config->db->encoding       = 'UTF8';    // Encoding of database.
+$config->db->strictMode     = false;     // Turn off the strict mode of MySQL.
+//$config->db->emulatePrepare = true;    // PDO::ATTR_EMULATE_PREPARES
+//$config->db->bufferQuery    = true;     // PDO::MYSQL_ATTR_USE_BUFFERED_QUERY
 
 /* Slave database settings. */
 $config->slaveDB->persistant = false;      
diff --git a/framework/router.class.php b/framework/router.class.php
index c70befbfe3..d81b494e88 100755
--- a/framework/router.class.php
+++ b/framework/router.class.php
@@ -1488,15 +1488,14 @@ class router
         try 
         {
             $dbh = new PDO($dsn, $params->user, $params->password, array(PDO::ATTR_PERSISTENT => $params->persistant));
+            $dbh->exec("SET NAMES {$params->encoding}");
+
             $dbh->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ);
             $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
-            $dbh->exec("SET NAMES {$params->encoding}");
             if(isset($params->strictMode) and $params->strictMode == false) $dbh->exec("SET @@sql_mode= ''");
-            if(isset($params->checkCentOS) and $params->checkCentOS and helper::isCentOS())
-            {
-                $dbh->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
-                $dbh->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true);
-            }
+            if(isset($params->emulatePrepare)) $dbh->setAttribute(PDO::ATTR_EMULATE_PREPARES, $params->emulatePrepare);
+            if(isset($params->bufferQuery))    $dbh->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, $params->bufferQuery);
+
             return $dbh;
         }
         catch (PDOException $exception)