diff --git a/kiri-engine/Pool/Connection.php b/kiri-engine/Pool/Connection.php
index c7d8a98c..498653b2 100644
--- a/kiri-engine/Pool/Connection.php
+++ b/kiri-engine/Pool/Connection.php
@@ -98,8 +98,6 @@ class Connection extends Component
 	{
 		$minx = Config::get('databases.pool.min', 1);
 
-		CoordinatorManager::utility($config['cds'])->yield();
-
 		return $this->pool->get($config['cds'], $this->generate($config), $minx);
 	}
 
diff --git a/kiri-engine/Pool/Pool.php b/kiri-engine/Pool/Pool.php
index 452b2aba..93e15c35 100644
--- a/kiri-engine/Pool/Pool.php
+++ b/kiri-engine/Pool/Pool.php
@@ -64,14 +64,18 @@ class Pool extends Component
 	 */
 	public function check($name): void
 	{
-		CoordinatorManager::utility($name)->waite();
-
 		$channel = $this->channel($name);
+
+		$lists = [];
 		while (($pdo = $channel->pop()) instanceof PDO) {
 			$pdo->check();
-		}
 
-		CoordinatorManager::utility($name)->done();
+			$lists[] = $pdo;
+
+		}
+		foreach ($lists as $list) {
+			$channel->push($list);
+		}
 	}