From b3649c5a1929c0ee403828b757a650641cf2ab36 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Mon, 20 Aug 2012 13:56:09 +0800
Subject: [PATCH] bug fixed

---
 src/main/java/com/alibaba/druid/pool/DruidDataSource.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 563f44a92d..3ddeca21d0 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -752,7 +752,10 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
         final Connection conn = pooledConnection.getConnection();
         final DruidConnectionHolder holder = pooledConnection.getConnectionHolder();
 
-        assert holder != null;
+        if (holder == null) {
+            LOG.warn("connectionHolder is null");
+            return;
+        }
 
         if (pooledConnection.isTraceEnable()) {
             ActiveConnectionTraceInfo oldInfo = activeConnections.remove(pooledConnection);