diff --git a/library/think/Model.php b/library/think/Model.php
index a432b57d..71f8bb17 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -199,7 +199,7 @@ class Model
                         throw new Exception(' fields not exists :[' . $key . '=>' . $val . ']');
                     }
                     unset($data[$key]);
-                } elseif (is_scalar($val) && empty($this->options['bind'][':' . $key])) {
+                } elseif (is_scalar($val) && empty($this->options['bind'][$key])) {
                     // 字段类型检查
                     $this->_parseType($data, $key, $this->options['bind']);
                 }
@@ -779,7 +779,7 @@ class Model
             foreach ($options['where'] as $key => $val) {
                 $key = trim($key);
                 if (in_array($key, $fields, true)) {
-                    if (is_scalar($val) && empty($options['bind'][':' . $key])) {
+                    if (is_scalar($val) && empty($options['bind'][$key])) {
                         $this->_parseType($options['where'], $key, $options['bind']);
                     }
                 }
@@ -804,19 +804,19 @@ class Model
      */
     protected function _parseType(&$data, $key, &$bind)
     {
-        if (!isset($bind[':' . $key]) && isset($this->fields['_type'][$key])) {
+        if (!isset($bind[$key]) && isset($this->fields['_type'][$key])) {
             $fieldType = strtolower($this->fields['_type'][$key]);
             if (false !== strpos($fieldType, 'enum')) {
                 // 支持ENUM类型优先检测
             } elseif (false === strpos($fieldType, 'bigint') && false !== strpos($fieldType, 'int')) {
-                $bind[':' . $key] = [$data[$key], \PDO::PARAM_INT];
-                $data[$key]       = ':' . $key;
+                $bind[$key] = [$data[$key], \PDO::PARAM_INT];
+                $data[$key] = ':' . $key;
             } elseif (false !== strpos($fieldType, 'float') || false !== strpos($fieldType, 'double')) {
-                $bind[':' . $key] = [$data[$key], \PDO::PARAM_INT];
-                $data[$key]       = ':' . $key;
+                $bind[$key] = [$data[$key], \PDO::PARAM_INT];
+                $data[$key] = ':' . $key;
             } elseif (false !== strpos($fieldType, 'bool')) {
-                $bind[':' . $key] = [$data[$key], \PDO::PARAM_BOOL];
-                $data[$key]       = ':' . $key;
+                $bind[$key] = [$data[$key], \PDO::PARAM_BOOL];
+                $data[$key] = ':' . $key;
             } elseif (false !== strpos($fieldType, 'json') && is_array($data[$key])) {
                 $data[$key] = json_encode($data[$key]);
             }
diff --git a/library/think/db/Driver.php b/library/think/db/Driver.php
index 83304393..5fc0a8f0 100644
--- a/library/think/db/Driver.php
+++ b/library/think/db/Driver.php
@@ -168,14 +168,8 @@ abstract class Driver
         }
 
         $this->queryStr = $str;
-        if (!empty($bind)) {
-            $that           = $this;
-            $this->queryStr = strtr($this->queryStr, array_map(function ($val) use ($that) {
-                return $that->quote(is_array($val) ? $val[0] : $val);
-            }, $bind));
-        }
         if ($fetchSql) {
-            return $this->queryStr;
+            return $this->getBindSql($this->queryStr, $bind);
         }
         //释放前次的查询结果
         if (!empty($this->PDOStatement)) {
@@ -183,33 +177,20 @@ abstract class Driver
         }
 
         Db::$queryTimes++;
-        // 调试开始
-        $this->debug(true);
-        $this->PDOStatement = $this->_linkID->prepare($str);
-        if (false === $this->PDOStatement) {
-            $this->error();
-            return false;
-        }
-        foreach ($bind as $key => $val) {
-            if (is_array($val)) {
-                $this->PDOStatement->bindValue($key, $val[0], $val[1]);
-            } else {
-                $this->PDOStatement->bindValue($key, $val);
-            }
-        }
         try {
+            // 调试开始
+            $this->debug(true);
+            // 预处理
+            $this->PDOStatement = $this->_linkID->prepare($str);
+            // 参数绑定
+            $this->bindValue($bind);
+            // 执行查询
             $result = $this->PDOStatement->execute();
             // 调试结束
             $this->debug(false);
-            if (false === $result) {
-                $this->error();
-                return false;
-            } else {
-                return $this->getResult();
-            }
+            return $this->getResult();
         } catch (\PDOException $e) {
-            $this->error();
-            return false;
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -229,14 +210,8 @@ abstract class Driver
         }
 
         $this->queryStr = $str;
-        if (!empty($bind)) {
-            $that           = $this;
-            $this->queryStr = strtr($this->queryStr, array_map(function ($val) use ($that) {
-                return $that->quote(is_array($val) ? $val[0] : $val);
-            }, $bind));
-        }
         if ($fetchSql) {
-            return $this->queryStr;
+            return $this->getBindSql($this->queryStr, $bind);
         }
         //释放前次的查询结果
         if (!empty($this->PDOStatement)) {
@@ -244,36 +219,66 @@ abstract class Driver
         }
 
         Db::$executeTimes++;
-        // 记录开始执行时间
-        $this->debug(true);
-        $this->PDOStatement = $this->_linkID->prepare($str);
-        if (false === $this->PDOStatement) {
-            $this->error();
-            return false;
-        }
-        foreach ($bind as $key => $val) {
-            if (is_array($val)) {
-                $this->PDOStatement->bindValue($key, $val[0], $val[1]);
-            } else {
-                $this->PDOStatement->bindValue($key, $val);
-            }
-        }
         try {
+            // 调试开始
+            $this->debug(true);
+            // 预处理
+            $this->PDOStatement = $this->_linkID->prepare($str);
+            // 参数绑定操作
+            $this->bindValue($bind);
+            // 执行语句
             $result = $this->PDOStatement->execute();
+            // 调试结束
             $this->debug(false);
-            if (false === $result) {
-                $this->error();
-                return false;
-            } else {
-                $this->numRows = $this->PDOStatement->rowCount();
-                if (preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
-                    $this->lastInsID = $this->_linkID->lastInsertId();
-                }
-                return $this->numRows;
+
+            $this->numRows = $this->PDOStatement->rowCount();
+            if (preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
+                $this->lastInsID = $this->_linkID->lastInsertId();
             }
+            return $this->numRows;
         } catch (\PDOException $e) {
-            $this->error();
-            return false;
+            throw new Exception($e->getMessage());
+        }
+    }
+
+    protected function getBindSql($sql, array $bind = [])
+    {
+        if ($bind) {
+            foreach ($bind as $key => $val) {
+                // 占位符
+                $val = is_array($val) ? $val[0] : $val;
+                if (is_numeric($key)) {
+                    // 问号占位符
+                    $sql = substr_replace($sql, $val, strpos($sql, '?'), 1);
+                } else {
+                    $sql = str_replace(':' . $key, $val, $sql);
+                }
+            }
+        }
+        return $sql;
+    }
+
+    /**
+     * 参数绑定
+     * 支持 ['name'=>'value','id'=>123] 对应命名占位符
+     * 或者 ['value',123] 对应问号占位符
+     * @access public
+     * @param array $bind 要绑定的参数列表
+     * @return void
+     */
+    protected function bindValue(array $bind = [])
+    {
+        foreach ($bind as $key => $val) {
+            // 占位符
+            $param = is_numeric($key) ? $key + 1 : ':' . $key;
+            if (is_array($val)) {
+                $result = $this->PDOStatement->bindValue($param, $val[0], $val[1]);
+            } else {
+                $result = $this->PDOStatement->bindValue($param, $val);
+            }
+            if (!$result) {
+                throw new Exception('bind param error : [ ' . $param . '=>' . $val . ' ]');
+            }
         }
     }
 
@@ -305,11 +310,11 @@ abstract class Driver
     public function commit()
     {
         if ($this->transTimes > 0) {
-            $result           = $this->_linkID->commit();
-            $this->transTimes = 0;
-            if (!$result) {
-                $this->error();
-                return false;
+            try {
+                $result           = $this->_linkID->commit();
+                $this->transTimes = 0;
+            } catch (\PDOException $e) {
+                throw new Exception($e->getMessage());
             }
         }
         return true;
@@ -323,11 +328,11 @@ abstract class Driver
     public function rollback()
     {
         if ($this->transTimes > 0) {
-            $result           = $this->_linkID->rollback();
-            $this->transTimes = 0;
-            if (!$result) {
-                $this->error();
-                return false;
+            try {
+                $result           = $this->_linkID->rollback();
+                $this->transTimes = 0;
+            } catch (\PDOException $e) {
+                throw new Exception($e->getMessage());
             }
         }
         return true;
@@ -376,33 +381,6 @@ abstract class Driver
         $this->_linkID = null;
     }
 
-    /**
-     * 数据库错误信息
-     * 并显示当前的SQL语句
-     * @access public
-     * @return string
-     */
-    public function error()
-    {
-        if ($this->PDOStatement) {
-            $error       = $this->PDOStatement->errorInfo();
-            $this->error = $error[1] . ':' . $error[2];
-        } else {
-            $this->error = '';
-        }
-        if ('' != $this->queryStr) {
-            $this->error .= "\n [ SQL语句 ] : " . $this->queryStr;
-        }
-        // 记录错误日志
-        Log::record($this->error, 'error');
-        if ($this->config['debug']) {
-            // 开启数据库调试模式
-            throw new Exception($this->error);
-        } else {
-            return $this->error;
-        }
-    }
-
     /**
      * 设置锁机制
      * @access protected
@@ -428,12 +406,12 @@ abstract class Driver
                 $set[] = $this->parseKey($key) . '=NULL';
             } elseif (is_scalar($val)) {
                 // 过滤非标量数据
-                if (0 === strpos($val, ':') && in_array($val, array_keys($this->bind))) {
+                if (0 === strpos($val, ':') && isset($this->bind[substr($val, 1)])) {
                     $set[] = $this->parseKey($key) . '=' . $val;
                 } else {
                     $name  = count($this->bind);
-                    $set[] = $this->parseKey($key) . '=:' . $_SERVER['REQUEST_TIME'] . '_' . $name;
-                    $this->bindParam($_SERVER['REQUEST_TIME'] . '_' . $name, $val);
+                    $set[] = $this->parseKey($key) . '=:' . $key . $_SERVER['REQUEST_TIME'] . '_' . $name;
+                    $this->bindParam($key . $_SERVER['REQUEST_TIME'] . '_' . $name, $val);
                 }
             }
         }
@@ -449,7 +427,7 @@ abstract class Driver
      */
     protected function bindParam($name, $value)
     {
-        $this->bind[':' . $name] = $value;
+        $this->bind[$name] = $value;
     }
 
     /**
@@ -486,7 +464,7 @@ abstract class Driver
     protected function parseValue($value)
     {
         if (is_string($value)) {
-            $value = strpos($value, ':') === 0 && in_array($value, array_keys($this->bind)) ? $value : $this->quote($value);
+            $value = strpos($value, ':') === 0 && isset($this->bind[substr($value, 1)]) ? $value : $this->quote($value);
         } elseif (isset($value[0]) && is_string($value[0]) && strtolower($value[0]) == 'exp') {
             $value = $this->quote($value[1]);
         } elseif (is_array($value)) {
@@ -926,8 +904,8 @@ abstract class Driver
                     $values[] = $val;
                 } else {
                     $name     = count($this->bind);
-                    $values[] = ':' . $_SERVER['REQUEST_TIME'] . '_' . $name;
-                    $this->bindParam($_SERVER['REQUEST_TIME'] . '_' . $name, $val);
+                    $values[] = ':' . $key . $_SERVER['REQUEST_TIME'] . '_' . $name;
+                    $this->bindParam($key . $_SERVER['REQUEST_TIME'] . '_' . $name, $val);
                 }
             }
         }
@@ -968,8 +946,8 @@ abstract class Driver
                         $value[] = $val;
                     } else {
                         $name    = count($this->bind);
-                        $value[] = ':' . $_SERVER['REQUEST_TIME'] . '_' . $name;
-                        $this->bindParam($_SERVER['REQUEST_TIME'] . '_' . $name, $val);
+                        $value[] = ':' . $key . $_SERVER['REQUEST_TIME'] . '_' . $name;
+                        $this->bindParam($key . $_SERVER['REQUEST_TIME'] . '_' . $name, $val);
                     }
                 }
             }
@@ -1149,7 +1127,16 @@ abstract class Driver
      */
     public function getError()
     {
-        return $this->error;
+        if ($this->PDOStatement) {
+            $error = $this->PDOStatement->errorInfo();
+            $error = $error[1] . ':' . $error[2];
+        } else {
+            $error = '';
+        }
+        if ('' != $this->queryStr) {
+            $error .= "\n [ SQL语句 ] : " . $this->queryStr;
+        }
+        return $error;
     }
 
     /**
diff --git a/library/think/db/driver/Mongo.php b/library/think/db/driver/Mongo.php
index 0335035d..75897767 100644
--- a/library/think/db/driver/Mongo.php
+++ b/library/think/db/driver/Mongo.php
@@ -14,7 +14,6 @@ namespace think\db\driver;
 use think\db\Driver;
 use think\Exception;
 use think\Lang;
-use think\Log;
 
 /**
  * Mongo数据库驱动
@@ -69,7 +68,7 @@ class Mongo extends Driver
 
             $host = 'mongodb://' . ($config['username'] ? "{$config['username']}" : '') . ($config['password'] ? ":{$config['password']}@" : '') . $config['hostname'] . ($config['hostport'] ? ":{$config['hostport']}" : '') . '/' . ($config['database'] ? "{$config['database']}" : '');
             try {
-                $this->linkID[$linkNum] = new \mongoClient($host, !empty($this->config['params'])?$this->config['params']:array());
+                $this->linkID[$linkNum] = new \mongoClient($host, !empty($this->config['params']) ? $this->config['params'] : array());
             } catch (\MongoConnectionException $e) {
                 throw new Exception($e->getmessage());
             }
@@ -94,7 +93,7 @@ class Mongo extends Driver
             $this->initConnect($master);
         }
 
-        $db = $db?$db:$this->config['database'];
+        $db = $db ? $db : $this->config['database'];
 
         try {
             if (!empty($db)) {
@@ -191,11 +190,10 @@ class Mongo extends Driver
      * @access public
      * @return string
      */
-    public function error()
+    public function getError()
     {
-        $this->error = $this->_mongo->lastError();
-        Log::record($this->error, 'error');
-        return $this->error;
+        $error = $this->_mongo->lastError();
+        return $error;
     }
 
     /**
@@ -482,8 +480,8 @@ class Mongo extends Driver
         }
         $this->model = $options['model'];
         $this->queryTimes++;
-        $query  = $this->parseWhere(!empty($options['where'])?$options['where']:'');
-        $fields = $this->parseField(!empty($options['field'])?$options['field']:'');
+        $query  = $this->parseWhere(!empty($options['where']) ? $options['where'] : '');
+        $fields = $this->parseField(!empty($options['field']) ? $options['field'] : '');
         if ($this->config['debug']) {
             $this->queryStr = $this->_dbName . '.' . $this->_collectionName . '.findOne(';
             $this->queryStr .= $query ? json_encode($query) : '{}';
@@ -637,7 +635,7 @@ class Mongo extends Driver
      */
     protected function parseOrder($order)
     {
-        if(is_array($order)) {
+        if (is_array($order)) {
             $order = join(',', $order);
         }
         if (is_string($order)) {
@@ -742,14 +740,14 @@ class Mongo extends Driver
     {
         $query = [];
         switch ($key) {
-            case '_query': // 字符串模式查询条件
+            case '_query':    // 字符串模式查询条件
                 parse_str($val, $query);
                 if (isset($query['_logic']) && strtolower($query['_logic']) == 'or') {
                     unset($query['_logic']);
                     $query['$or'] = $query;
                 }
                 break;
-            case '_string': // MongoCode查询
+            case '_string':    // MongoCode查询
                 $query['$where'] = new \MongoCode($val);
                 break;
         }
diff --git a/library/think/db/driver/Oracle.php b/library/think/db/driver/Oracle.php
index 5478a342..5ab0f083 100644
--- a/library/think/db/driver/Oracle.php
+++ b/library/think/db/driver/Oracle.php
@@ -11,6 +11,7 @@
 
 namespace think\db\driver;
 
+use think\Db;
 use think\db\Driver;
 
 /**
@@ -64,30 +65,20 @@ class Oracle extends Driver
             $this->free();
         }
 
-        $this->executeTimes++;
-        // 记录开始执行时间
-        $this->debug(true);
-        $this->PDOStatement = $this->_linkID->prepare($str);
-        if (false === $this->PDOStatement) {
-            $this->error();
-            return false;
-        }
+        Db::$executeTimes++;
         try {
-            $result = $this->PDOStatement->execute($bind);
+            // 记录开始执行时间
+            $this->debug(true);
+            $this->PDOStatement = $this->_linkID->prepare($str);
+            $result             = $this->PDOStatement->execute($bind);
             $this->debug(false);
-            if (false === $result) {
-                $this->error();
-                return false;
-            } else {
-                $this->numRows = $this->PDOStatement->rowCount();
-                if ($flag || preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
-                    $this->lastInsID = $this->_linkID->lastInsertId();
-                }
-                return $this->numRows;
+            $this->numRows = $this->PDOStatement->rowCount();
+            if ($flag || preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
+                $this->lastInsID = $this->_linkID->lastInsertId();
             }
+            return $this->numRows;
         } catch (\PDOException $e) {
-            $this->error();
-            return false;
+            throw new Exception($e->getMessage());
         }
     }