diff --git a/src/Db/Drivers/TPdoDriver.php b/src/Db/Drivers/TPdoDriver.php
index 10812e386a..feedb6a1c0 100644
--- a/src/Db/Drivers/TPdoDriver.php
+++ b/src/Db/Drivers/TPdoDriver.php
@@ -45,6 +45,13 @@ trait TPdoDriver
      */
     protected string $statementClass = '';
 
+    /**
+     * 检查是否离线的错误码索引.
+     *
+     * @readonly
+     */
+    protected int $checkIsOfflineCodeIndex = 0;
+
     public function __construct(array $option = [])
     {
         $option['password'] ??= '';
@@ -94,7 +101,7 @@ public function ping(): bool
         }
         catch (\PDOException $e)
         {
-            if (isset($e->errorInfo[0]) && $this->checkCodeIsOffline($e->errorInfo[0]))
+            if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
             {
                 $this->close();
             }
@@ -166,7 +173,7 @@ public function beginTransaction(): bool
         }
         catch (\PDOException $e)
         {
-            if (isset($e->errorInfo[0]) && $this->checkCodeIsOffline($e->errorInfo[0]))
+            if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
             {
                 $this->close();
             }
@@ -196,7 +203,7 @@ public function commit(): bool
         }
         catch (\PDOException $e)
         {
-            if (isset($e->errorInfo[0]) && $this->checkCodeIsOffline($e->errorInfo[0]))
+            if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
             {
                 $this->close();
             }
@@ -219,7 +226,7 @@ public function rollBack(?int $levels = null): bool
             }
             catch (\PDOException $e)
             {
-                if (isset($e->errorInfo[0]) && $this->checkCodeIsOffline($e->errorInfo[0]))
+                if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
                 {
                     $this->close();
                 }
@@ -328,7 +335,7 @@ public function exec(string $sql): int
         }
         catch (\PDOException $e)
         {
-            if (isset($e->errorInfo[0]) && $this->checkCodeIsOffline($e->errorInfo[0]))
+            if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
             {
                 $this->close();
             }
@@ -405,7 +412,7 @@ public function prepare(string $sql, array $driverOptions = []): IStatement
             }
             catch (\PDOException $e)
             {
-                if (isset($e->errorInfo[0]) && $this->checkCodeIsOffline($e->errorInfo[0]))
+                if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
                 {
                     $this->close();
                 }
@@ -439,7 +446,7 @@ public function query(string $sql): IStatement
         }
         catch (\PDOException $e)
         {
-            if (isset($e->errorInfo[0]) && $this->checkCodeIsOffline($e->errorInfo[0]))
+            if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
             {
                 $this->close();
             }
diff --git a/src/Db/Drivers/TPdoStatement.php b/src/Db/Drivers/TPdoStatement.php
index 7e7de8fe5e..62067dd4bc 100644
--- a/src/Db/Drivers/TPdoStatement.php
+++ b/src/Db/Drivers/TPdoStatement.php
@@ -32,6 +32,13 @@ trait TPdoStatement
      */
     protected $lastInsertId = '';
 
+    /**
+     * 检查是否离线的错误码索引.
+     *
+     * @readonly
+     */
+    protected int $checkIsOfflineCodeIndex = 0;
+
     public function __construct(IDb $db, \PDOStatement $statement, bool $isExecuted = false)
     {
         $this->db = $db;
@@ -158,7 +165,7 @@ public function execute(array $inputParameters = null): bool
         }
         catch (\PDOException $e)
         {
-            if (isset($e->errorInfo[0]) && $this->db->checkCodeIsOffline($e->errorInfo[0]))
+            if (isset($e->errorInfo[$this->checkIsOfflineCodeIndex]) && $this->db->checkCodeIsOffline($e->errorInfo[$this->checkIsOfflineCodeIndex]))
             {
                 $this->db->close();
             }
diff --git a/src/Db/Mysql/Drivers/PdoMysql/Driver.php b/src/Db/Mysql/Drivers/PdoMysql/Driver.php
index 3ae057ca4f..13695090fb 100644
--- a/src/Db/Mysql/Drivers/PdoMysql/Driver.php
+++ b/src/Db/Mysql/Drivers/PdoMysql/Driver.php
@@ -20,6 +20,13 @@ class Driver extends MysqlBase
         __construct as private tPdoDriverConstruct;
     }
 
+    /**
+     * 检查是否离线的错误码索引.
+     *
+     * @readonly
+     */
+    protected int $checkIsOfflineCodeIndex = 1;
+
     public function __construct(array $option = [])
     {
         $option['username'] ??= 'root';
diff --git a/src/Db/Mysql/Drivers/PdoMysql/Statement.php b/src/Db/Mysql/Drivers/PdoMysql/Statement.php
index c25c6e42b5..33c205473a 100644
--- a/src/Db/Mysql/Drivers/PdoMysql/Statement.php
+++ b/src/Db/Mysql/Drivers/PdoMysql/Statement.php
@@ -16,4 +16,11 @@
 class Statement extends MysqlBaseStatement implements IMysqlStatement
 {
     use TPdoStatement;
+
+    /**
+     * 检查是否离线的错误码索引.
+     *
+     * @readonly
+     */
+    protected int $checkIsOfflineCodeIndex = 1;
 }