diff --git a/kiri-engine/Pool/Connection.php b/kiri-engine/Pool/Connection.php
index b0bf87c7..7e5f68a8 100644
--- a/kiri-engine/Pool/Connection.php
+++ b/kiri-engine/Pool/Connection.php
@@ -24,11 +24,8 @@ class Connection extends Component
 
 
 	/**
-	 * @param $cds
+	 * @param $name
 	 * @return bool
-	 *
-	 * db is in transaction
-	 * @throws Exception
 	 */
 	public function inTransaction($name): bool
 	{
@@ -39,6 +36,7 @@ class Connection extends Component
 		return false;
 	}
 
+
 	/**
 	 * @param $coroutineName
 	 * @throws Exception
@@ -101,7 +99,6 @@ class Connection extends Component
 	}
 
 
-
 	/**
 	 * @param $coroutineName
 	 * @param $config
@@ -156,7 +153,6 @@ class Connection extends Component
 	}
 
 
-
 	/**
 	 * @param $coroutineName
 	 * @return bool