diff --git a/dbpool.go b/dbpool.go
index 2a00823..b1a6518 100644
--- a/dbpool.go
+++ b/dbpool.go
@@ -405,7 +405,7 @@ func (this *dbPool) borrowConn(name string) *dataSource {
 			if head, ok := this.dataSourceHash[name]; ok {
 				if !head.Empty() {
 					ds := head.FirstEntry().(*dataSource)
-					ds.entry.DelInit()
+					//ds.entry.DelInit()
 					this.lock.Unlock()
 					return ds
 				}
@@ -416,17 +416,37 @@ func (this *dbPool) borrowConn(name string) *dataSource {
 		tryCount++
 	}
 	return nil
+	/*
+	tryCount := 0
+	for tryCount < 5 {
+		{
+			this.lock.Lock()
+			if head, ok := this.dataSourceHash[name]; ok {
+				if !head.Empty() {
+					ds := head.FirstEntry().(*dataSource)
+					ds.entry.DelInit()
+					this.lock.Unlock()
+					return ds
+				}
+			}
+			this.lock.Unlock()
+		}
+		time.Sleep(time.Second * 1)
+		tryCount++
+	}
+	return nil*/
 }
 
 func (this *dbPool) returnConn(ds *dataSource) {
 	this.lock.Lock()
 	defer this.lock.Unlock()
 
+	/*
 	if head, ok := this.dataSourceHash[ds.name]; ok {
 		head.AddTail(&ds.entry)
 	} else {
 		panic(fmt.Sprintf("returnConn error %s", ds.name))
-	}
+	}*/
 }
 
 func (this *dbPool) joinSelectFields(fields []string) string {