diff --git a/HJGL_ZH/BLL/Funs.cs b/HJGL_ZH/BLL/Funs.cs
index 36bb3e5..6ec762f 100644
--- a/HJGL_ZH/BLL/Funs.cs
+++ b/HJGL_ZH/BLL/Funs.cs
@@ -1,9 +1,11 @@
 namespace BLL
 {
+    using Model;
     using System;
+    using System.Collections.Concurrent;
     using System.Collections.Generic;
-    using System.Globalization;
     using System.Data.Linq;
+    using System.Globalization;
 
     /// <summary>
     /// 通用方法类。
@@ -13,12 +15,12 @@ namespace BLL
         /// <summary>
         /// 维护一个DB集合
         /// </summary>
-        private static Dictionary<int, Model.SGGLDB> dataBaseLinkList = new System.Collections.Generic.Dictionary<int, Model.SGGLDB>();
+        private static ConcurrentDictionary<int, Model.SGGLDB> dataBaseLinkList = new ConcurrentDictionary<int, Model.SGGLDB>();
 
         /// <summary>
         /// 维护一个DB集合
         /// </summary>
-        public static System.Collections.Generic.Dictionary<int, Model.SGGLDB> DBList
+        public static ConcurrentDictionary<int, Model.SGGLDB> DBList
         {
             get
             {
@@ -125,12 +127,29 @@ namespace BLL
         {
             get
             {
-                if (!DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
+                try
                 {
-                    DBList.Add(System.Threading.Thread.CurrentThread.ManagedThreadId, new Model.SGGLDB(connString));
-                }
+                    if (!DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
+                    {
+                        DBList.TryAdd(System.Threading.Thread.CurrentThread.ManagedThreadId, new SGGLDB(connString));
+                    }
 
-                return DBList[System.Threading.Thread.CurrentThread.ManagedThreadId];
+                    //DBList[System.Threading.Thread.CurrentThread.ManagedThreadId].CommandTimeout = 120;
+                    return DBList[System.Threading.Thread.CurrentThread.ManagedThreadId];
+                }
+                catch
+                {
+                    var db = new SGGLDB(connString);
+                    if (DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
+                    {
+                        DBList[System.Threading.Thread.CurrentThread.ManagedThreadId] = db;
+                    }
+                    else
+                    {
+                        DBList.TryAdd(System.Threading.Thread.CurrentThread.ManagedThreadId, db);
+                    }
+                    return db;
+                }
             }
         }
 
diff --git a/HJGL_ZH/FineUIPro.Web/common/PageBase.cs b/HJGL_ZH/FineUIPro.Web/common/PageBase.cs
index 099c0cc..9cc9588 100644
--- a/HJGL_ZH/FineUIPro.Web/common/PageBase.cs
+++ b/HJGL_ZH/FineUIPro.Web/common/PageBase.cs
@@ -165,7 +165,9 @@ namespace FineUIPro.Web
         {
             if (BLL.Funs.DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
             {
-                BLL.Funs.DBList.Remove(System.Threading.Thread.CurrentThread.ManagedThreadId);
+                Model.SGGLDB outdb;
+                BLL.Funs.DBList.TryRemove(System.Threading.Thread.CurrentThread.ManagedThreadId, out outdb);
+                outdb.Dispose();
             }
         }